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{{trope}}
{{trope}}
[[File:mascot_fighter_ftw_1928.jpg|link=Dream Mix TV World Fighters|frame| Let's see... [[Transformers|Optimus Prime]], [[Beyblade|Tyson]], [[Adventure Island|Master Higgins]], [[Bomberman (Video Game)|Bomberman]], [[Bloody Roar|Hugo]], [[Twinbee (Video Game)|Twinbee]], [[Castlevania|Simon Belmont]]... just to name a few]]
[[File:mascot fighter ftw 1928.jpg|link=Dream Mix TV World Fighters|frame| Let's see... [[Transformers|Optimus Prime]], [[Beyblade|Tyson]], [[Adventure Island|Master Higgins]], [[Bomberman]], [[Bloody Roar|Hugo]], [[Twinbee]], [[Castlevania|Simon Belmont]]... just to name a few]]


{{quote|''"So many heroes from so many dimensions! This is [[Rule of Cool|pretty cool]]!"''|'''[[My Life As a Teenage Robot|Jenny Wakeman]]''', ''[[Nicktoons Unite|Nicktoons: Attack of the Toybots]]''}}
{{quote|''"So many heroes from so many dimensions! This is [[Rule of Cool|pretty cool]]!"''
|'''[[My Life as a Teenage Robot|Jenny Wakeman]]'''|''[[Nicktoons Unite!|Nicktoons: Attack of the Toybots]]''}}


A [[Crossover]] that involves characters from more than two shows or more than two [[Ficton|fictons]].
A [[Crossover]] that involves characters from more than two shows or more than two [[ficton]]s.


More often than not, this is a mash up of series which do not have a strict sense of continuity or a clear [[Universe Bible]]. To lessen [[Canon]]-faulting, especially with series that do have strict continuity, a new 'neutral' setting is made that offers equal footing for all the characters.
More often than not, this is a mash up of series which do not have a strict sense of continuity or a clear [[Universe Bible]]. To lessen [[Canon]]-faulting, especially with series that do have strict continuity, a new 'neutral' setting is made that offers equal footing for all the characters.


This rarely occurs in live action shows, unless a production company can be formed that holds copyrights to everything. Thus, this is much more common in animated series -- although you can generally expect [[The BBC]] to pull one out of somewhere when [[Children in Need]] or [[Comic Relief]] rolls around.
This rarely occurs in live action shows, unless a production company can be formed that holds copyrights to everything. Thus, this is much more common in animated series although you can generally expect [[The BBC]] to pull one out of somewhere when [[Children in Need]] or [[Comic Relief]] rolls around.


It also becomes more viable the farther you get from [[Canon]], such as one-time TV specials and especially video games (''[[Kingdom Hearts]]'', ''[[Jump Super Stars]]'', ''[[Super Robot Wars]]'', etc.)
It also becomes more viable the farther you get from [[Canon]], such as one-time TV specials and especially video games (''[[Kingdom Hearts]]'', ''[[Jump Super Stars]]'', ''[[Super Robot Wars]]'', etc.)


As [[Story Arc|Story Arcs]] have become more prevalent, this practice has somewhat lessened, with shifts to strict [[The Verse|Verse]] building and explicit references.
As [[Story Arc]]s have become more prevalent, this practice has somewhat lessened, with shifts to strict [[The Verse|Verse]] building and explicit references.


This trope has become increasingly common in video games, especially those involving both licensed and original properties. These games, depending on how far or how deep they mine, can have interesting effects on the fiction chosen. Many long-gone and/or forgotten [[Humongous Mecha]] shows, for example, often get a new lease on life, or even a brand-new sequel or remake, after making an appearance or two in a ''[[Super Robot Wars]]'' game. Similarly, the ''[[Fire Emblem]]'' series was finally brought over to the US to great success after two of its characters made an appearance as unlockable fighters in ''[[Super Smash Bros]] Melee''.
This trope has become increasingly common in video games, especially those involving both licensed and original properties. These games, depending on how far or how deep they mine, can have interesting effects on the fiction chosen. Many long-gone and/or forgotten [[Humongous Mecha]] shows, for example, often get a new lease on life, or even a brand-new sequel or remake, after making an appearance or two in a ''[[Super Robot Wars]]'' game. Similarly, the ''[[Fire Emblem]]'' series was finally brought over to the US to great success after two of its characters made an appearance as unlockable fighters in ''[[Super Smash Bros.]] Melee''.


In spite of its recently emerging prevalence, this trope is [[Older Than Feudalism]]. The ''[[Argonautica]]'' by Apollonius Rhodius (3rd century BCE) features nearly every ancient Greek mythical hero all going on a quest to find the Golden Fleece.
In spite of its recently emerging prevalence, this trope is [[Older Than Feudalism]]. The ''[[Argonautica]]'' by Apollonius Rhodius (3rd century BCE) features nearly every ancient Greek mythical hero all going on a quest to find the Golden Fleece.


[[Sub Trope|Sub Tropes]]:
[[Sub-Trope]]s:
* [[Crisis Crossover]] (a company-wide [[Massive Multiplayer Crossover]])
* [[Crisis Crossover]] (a company-wide '''Massive Multiplayer Crossover''')
** [[Cross Through]] (a company-wide event that affects every series involved without having them cross over)
** [[Cross Through]] (a company-wide event that affects every series involved without having them cross over)
* [[Deconstruction Crossover]] (when the main purpose of using a [[Massive Multiplayer Crossover]] is [[Deconstruction]])
* [[Deconstruction Crossover]] (when the main purpose of using a '''Massive Multiplayer Crossover''' is [[Deconstruction]])
* [[Mega Crossover]] (the [[Fanfic]] version)
* [[Mega Crossover]] (the [[Fanfic]] version)
* [[Monster Mash]] (classical movie monsters)
* [[Monster Mash]] (classical movie monsters)
* [[Ultimate Showdown of Ultimate Destiny]] (with [[Super Robot Wars|few]] [[Super Smash Bros|exceptions]] almost exclusively limited to [[Fan Fics]])
* [[Ultimate Showdown of Ultimate Destiny]] (with [[Super Robot Wars|few]] [[Super Smash Bros.|exceptions]] almost exclusively limited to [[Fan Fics]])


See also [[Power Creep, Power Seep]] and [[Story-Breaker Team-Up]].
See also [[Power Creep, Power Seep]] and [[Story-Breaker Team-Up]].

{{examples}}
{{examples}}
== [[Advertising]] ==
* A recent{{when}} MasterCard commercial featured several food mascots (from Count Chocula to the Pillsbury Doughboy) eating dinner with [[Crowning Moment of Awesome|Mr. Clean doing the dishes]].
* USA Network's commercials play this for laughs, having various combinations of characters from their shows (''Burn Notice'', ''Monk'', ''Psych'', others) encounter each other and make idle conversation.
* UK example: [http://www.youtube.com/watch?v=BCfGC_dGn4M The Greatest Minds In Advertising Join Forces] in a 2009 viral for ''[[Comic Relief]]''.


== Anime and Manga ==
== [[Anime]] and [[Manga]] ==
* The ''[[Giant Robo]]'' [[OVA]] series featured characters taken from several other series Misuteru Yokoyama -- the original creator of ''[[Giant Robo]]''/''Johnny Sokko and His Flying Robot'' -- had written. This included adaptations of the medieval Chinese stories ''Romance Of The Three Kingdoms'' and ''The Water Margins'', which led to many main and secondary characters in ancient Chinese clothing coexisting with people in three-piece suits [[Twenty Minutes Into the Future]]. It also included the very first [[Magical Girl]], ''Mahotsukai Sally'' (''Sally, the Witch''), under her original name "Sunny", as Shockwave Alberto's daughter.
* The ''[[Giant Robo]]'' [[OVA]] series featured characters taken from several other series Misuteru Yokoyama—the original creator of ''[[Giant Robo]]''/''Johnny Sokko and His Flying Robot''—had written. This included adaptations of the medieval Chinese stories ''Romance Of The Three Kingdoms'' and ''The Water Margins'', which led to many main and secondary characters in ancient Chinese clothing coexisting with people in three-piece suits [[Twenty Minutes Into the Future]]. It also included the very first [[Magical Girl]], ''Mahotsukai Sally'' (''Sally, the Witch''), under her original name "Sunny", as Shockwave Alberto's daughter.
* Legendary Manga creator [[Osamu Tezuka]] similarly uses [[Reused Character Design|Reused Character Designs]], wherein a character from a previous work will actually play a different role in another story, [[Animated Actors|as if they were an actor or actress]]. The Game Boy Advance game ''[[Astro Boy]]: Omega Factor'' pulls nearly all of them into one massive story.
* Legendary Manga creator [[Osamu Tezuka]] similarly uses [[Reused Character Design]]s, wherein a character from a previous work will actually play a different role in another story, [[Animated Actors|as if they were an actor or actress]]. The Game Boy Advance game ''[[Astro Boy]]: Omega Factor'' pulls nearly all of them into one massive story.
* ''[http://www.bedetheque.com/Couvertures/DragonFall5_17022007.jpg DragonFall]'' blended [[Dragonball]], [[Star Wars]] and [http://fr.wikipedia.org/wiki/Dragon_Fall a whole bunch of other series] into a parody. With mixed results.
* ''[http://www.bedetheque.com/Couvertures/DragonFall5_17022007.jpg DragonFall]'' blended [[Dragon Ball]], [[Star Wars]] and [http://fr.wikipedia.org/wiki/Dragon_Fall a whole bunch of other series] into a parody. With mixed results.
* The intro to the [[Rumiko Takahashi]] gallery show ''[http://www.youtube.com/watch?v=kf953nWYSlA It's a Rumic World]'' explicitly crosses over ''[[Ranma One Half]], [[Urusei Yatsura]],'' and ''[[Inuyasha]]''.
* The intro to the [[Rumiko Takahashi]] gallery show ''[http://www.youtube.com/watch?v=kf953nWYSlA It's a Rumic World]'' explicitly crosses over ''[[Ranma ½]], [[Urusei Yatsura]],'' and ''[[Inuyasha]]''.
* ''[[Tsubasa Reservoir Chronicle]]'' has the characters jumping from [[Alternate Universe]] to [[Alternate Universe]] filled with [[CLAMP]] characters from their various series.
* ''[[Tsubasa Reservoir Chronicle]]'' has the characters jumping from [[Alternate Universe]] to [[Alternate Universe]] filled with [[CLAMP]] characters from their various series.
** Amusingly, save a select few examples, mostly as [[The Cameo|cameos]], the Alternate Universes are hardly ever populated by ''actual'' CLAMP characters, but [[Alternate Universe]] ''instances'' of them.
** Amusingly, save a select few examples, mostly as [[The Cameo|cameos]], the Alternate Universes are hardly ever populated by ''actual'' CLAMP characters, but [[Alternate Universe]] ''instances'' of them.
** Their first crossover happened in ''Clamp Campus Detectives'' since the three main character were in series/stories on their own before CCD: Nokoru Imonoyama in Duklyon, Akira Ijuin in ''20 Mask ni Onegai'' (Man of Twenty Masks) and supposedly Suou Takamura showed up in an old oneshot. Then there was ''X/1999'' where characters from past CLAMP series started appearing, including Subaru, the main character of ''[[Tokyo Babylon]]'', as a major character, and during his series set in the early 90s it was said that he would have a role in [[Endofthe World As We Know It]] that is X, making for a bit of [[Foreshadowing]].
** Their first crossover happened in ''Clamp Campus Detectives'' since the three main character were in series/stories on their own before CCD: Nokoru Imonoyama in ''Duklyon'', Akira Ijuin in ''20 Mask ni Onegai'' (Man of Twenty Masks) and supposedly Suou Takamura showed up in an old oneshot. Then there was ''X/1999'' where characters from past CLAMP series started appearing, including Subaru, the main character of ''[[Tokyo Babylon]]'', as a major character, and during his series set in the early 90s it was said that he would have a role in [[The End of the World as We Know It]] that is X, making for a bit of [[Foreshadowing]].
* ''[[Kyoshiro to Towa no Sora]]'' is primarily a crossover of the mangaka and studio's previous works: ''[[Kannazuki no Miko]]'', ''[[Steel Angel Kurumi]]'', ''[[Magical Nyan Nyan Taruto]]'', and ''[[UFO Princess Valkyrie]]''.
* ''[[Kyoshiro to Towa no Sora]]'' is primarily a crossover of the mangaka and studio's previous works: ''[[Kannazuki no Miko]]'', ''[[Steel Angel Kurumi]]'', ''[[Magical Nyan Nyan Taruto]]'', and ''[[UFO Princess Valkyrie]]''.
* Before ''Dengeki Gakuen RPG: Cross of Venus'' (mentioned below), there was [http://www.youtube.com/watch?v=0CksYnT1qO8 this animated short] produced for Dengeki Bunko's 2007 Movie Festival, featuring chibi versions of characters from ''[[Kino's Journey]], [[Inukami]]'' and ''[[Shakugan no Shana]]'' (Note that the chibi Shana here is '''not''' [[Omake|Shana-tan]]; for one, ''she'' is the stalker rather than said omake series' Kazumi.).
* Before ''Dengeki Gakuen RPG: Cross of Venus'' (mentioned below), there was [http://www.youtube.com/watch?v=0CksYnT1qO8 this animated short] produced for Dengeki Bunko's 2007 Movie Festival, featuring chibi versions of characters from ''[[Kino's Journey]], [[Inukami!]]'' and ''[[Shakugan no Shana]]'' (Note that the chibi Shana here is '''not''' [[Omake|Shana-tan]]; for one, ''she'' is the stalker rather than said omake series' Kazumi.).
* While most [[Go Nagai]] series contain cameos here and there, the recent ''[[Shin Mazinger]]'' seems to be going the whole way. Characters from several alternate versions of ''[[Mazinger Z]]'' have shown up, as well as characters from [[Violence Jack]] (itself, a [[Deconstruction Crossover]]) and the titular demon from ''[[Mao Dante (Manga)|Mao Dante]]''. Unsurprisingly, this series is being directed by the same man behind ''[[Giant Robo]]'', Yasuhiro Imagawa.
* While most [[Go Nagai]] series contain cameos here and there, the recent ''[[Shin Mazinger Shougeki! Z-hen]]'' seems to be going the whole way. Characters from several alternate versions of ''[[Mazinger Z]]'' have shown up, as well as characters from [[Violence Jack]] (itself, a [[Deconstruction Crossover]]) and the titular demon from ''[[Maō Dante]]''. Unsurprisingly, this series is being directed by the same man behind ''[[Giant Robo]]'', Yasuhiro Imagawa.
** ''Chibi Chara Go Nagai World'' was a crossover which featured SD versions of ''[[Mazinger Z]]'', ''[[Devilman (Manga)|Devilman]]'', and ''[[Violence Jack]]'' (with in-story explanations for the characters being SD).
** ''Chibi Chara Go Nagai World'' was a crossover which featured SD versions of ''[[Mazinger Z]]'', ''[[Devilman]]'', and ''[[Violence Jack]]'' (with in-story explanations for the characters being SD).
* The ''[[Pretty Cure All Stars]]'' movie series allows the Cures from the past seasons to meet (and be friends with) the new team.
* The ''[[Pretty Cure All Stars]]'' movie series allows the Cures from the past seasons to meet (and be friends with) the new team.



== [[Comic Books]] ==
== [[Comic Books]] ==
* ''[[The League of Extraordinary Gentlemen]]'' has a [[Superhero]] team composed of multiple [[Public Domain Character|public domain characters]].
* ''[[The League of Extraordinary Gentlemen]]'' has a [[Superhero]] team composed of multiple [[Public Domain Character|public domain characters]].
* ''[[Crisis On Infinite Earths]]'' was a massive DC multiverse crossover that attempted to pare down the 837,000 alternate Earths (some populated by the superheroes DC Comics had acquired by buying out other comic book companies over the course of 50 years, others created just to resolve DC's own legendary [[Continuity Snarl|Continuity Snarls]]) into one world, obliterating many "Alternate Earth" characters in the process.
* ''[[Crisis on Infinite Earths]]'' was a massive DC multiverse crossover that attempted to pare down the 837,000 alternate Earths (some populated by the superheroes DC Comics had acquired by buying out other comic book companies over the course of 50 years, others created just to resolve DC's own legendary [[Continuity Snarl]]s) into one world, obliterating many "Alternate Earth" characters in the process.
* ''[[Fables]]'' is about various figures from fairy tales and folklore living secretly in a neighborhood in NYC.
* ''[[Fables]]'' is about various figures from fairy tales and folklore living secretly in a neighborhood in NYC.
* ''[[Planetary]]'' is about an investigative super-team in the Wild Storm universe. Their members have had run-ins with [[Dracula]], [[Sherlock Holmes]], Jenny Sparks from ''[[The Authority]]'' and multiple versions of [[Batman (Comic Book)|Batman]].
* ''[[Planetary]]'' is about an investigative super-team in the Wild Storm universe. Their members have had run-ins with [[Dracula]], [[Sherlock Holmes]], Jenny Sparks from ''[[The Authority]]'' and multiple versions of [[Batman]].
* ''[[Dykes to Watch Out For|The Indelible Alison Bechdel]]'' offered a mash-up of various lesbian and gay comic artists, who threw their characters into the same world for a party. As the mash-up included Diane DiMassa, creator of ''Hothead Paisan: Homicidal Lesbian Terrorist'', the results were hilarious.
* ''[[Dykes to Watch Out For|The Indelible Alison Bechdel]]'' offered a mash-up of various lesbian and gay comic artists, who threw their characters into the same world for a party. As the mash-up included Diane DiMassa, creator of ''Hothead Paisan: Homicidal Lesbian Terrorist'', the results were hilarious.
* ''[[Joe the Barbarian (Comic Book)|Joe the Barbarian]]'' does this in a manner similar to ''The Indian In the Cupboard''.
* ''[[Joe the Barbarian]]'' does this in a manner similar to ''The Indian In the Cupboard''.
* A non-canon ''[[Judge Dredd]]'' story in the 1980 ''[[Dan Dare]]'' annual had Tharg bring all the popular characters currently being published in ''[[Two Thousand AD (Comic Book)|Two Thousand AD]]'' as well as the Starlord to Dredd's apartment for a surprise party. Then the robots that actually write the comics went on strike, forcing the characters to beat them all up.
* A non-canon ''[[Judge Dredd]]'' story in the 1980 ''[[Dan Dare]]'' annual had Tharg bring all the popular characters currently being published in ''[[2000 AD|Two Thousand AD]]'' as well as the Starlord to Dredd's apartment for a surprise party. Then the robots that actually write the comics went on strike, forcing the characters to beat them all up.
* ''[[Superman]] and [[Batman]] versus [[Aliens]] and [[Predator]]''
* ''[[Superman]] and [[Batman]] versus [[Aliens]] and [[Predator]]''
* The [[Alan Moore]] comic [[Albion]] shoves together a whole bunch of British comic characters of varying obsurity, most of whom are imprisoned by the Government as part of [[The Masquerade]].
* The [[Alan Moore]] comic [[Albion]] shoves together a whole bunch of British comic characters of varying obsurity, most of whom are imprisoned by the Government as part of [[The Masquerade]].
* [[Shi]]/[[Cyblade]]: The Battle for Independents featured many independent comic book characters, including [[Cerebus]], [[Bone]], [[Hellboy (Comic Book)|Hellboy]], [[Madman (Comic Book)|Madman]], [[Megaton Man]], [[Scud the Disposable Assassin]], [[The Tick (Animation)|The Tick]] and [[Usagi Yojimbo]]. Many of the same characters have also appeared in the [[Normalman]]/Megaton Man special, [[Gen 13]] ABC and [[War Of The Independents]].
* [[Shi]]/[[Cyblade]]: The Battle for Independents featured many independent comic book characters, including [[Cerebus]], [[Bone]], [[Hellboy (comics)|Hellboy]], [[Madman (Comic Book)|Madman]], [[Megaton Man]], [[Scud the Disposable Assassin]], [[The Tick (animation)]] and [[Usagi Yojimbo]]. Many of the same characters have also appeared in the [[Normalman]]/Megaton Man special, [[Gen 13]] ABC and [[War Of The Independents]].
* ''[[Freddy vs. Jason vs. Ash]]'', and its sequel ''Freddy vs. Jason vs. Ash: The Nightmare Warriors''.
* ''[[Freddy vs. Jason vs. Ash]]'', and its sequel ''Freddy vs. Jason vs. Ash: The Nightmare Warriors''.
* Dark Horse comics had ''[[Alien]] versus [[Predator]] versus [[The Terminator]]''.
* Dark Horse comics had ''[[Alien]] versus [[Predator]] versus [[The Terminator]]''.
* ''[[Fantastic Four (Comic Book)|Fantastic Four]]: True Story'' has the FF traveling to the realm of fiction, that is attacked by Nightmare, lord of the dreamworld. To fight him they join forces with [[The Divine Comedy (Literature)|Dante Alighieri]], [[Sense and Sensibility (Literature)|the Dashwood sisters]], [[Faust]], almost all [[William Shakespeare (Creator)|William Shakespeare]]'s protagonists, [[Frankenstein's Monster]], [[Robin Hood]], the [[Ivanhoe (Literature)|Ivanhoe]] cast and others, while Nightmare gains allies in the Sheriff of Nottingham, [[Dracula]] and [[Treasure Island|Long John Silver]]. Many other characters like [[Tarzan]] make cameos and in the end Johnny summons [[Lawyer-Friendly Cameo|lawyer friendly versions]] of [[James Bond]], [[Transformers|Megatron]], [[Steven Seagal]] and [[Chuck Norris]] to defeat Nightmare's army.
* ''[[Fantastic Four (Comic Book)|Fantastic Four]]: True Story'' has the FF traveling to the realm of fiction, that is attacked by Nightmare, lord of the dreamworld. To fight him they join forces with [[The Divine Comedy|Dante Alighieri]], [[Sense and Sensibility (novel)|the Dashwood sisters]], [[Faust]], almost all [[William Shakespeare]]'s protagonists, [[Frankenstein's Monster]], [[Robin Hood]], the [[Ivanhoe]] cast and others, while Nightmare gains allies in the Sheriff of Nottingham, [[Dracula]] and [[Treasure Island|Long John Silver]]. Many other characters like [[Tarzan]] make cameos and in the end Johnny summons [[Lawyer-Friendly Cameo|lawyer friendly versions]] of [[James Bond]], [[Transformers|Megatron]], [[Steven Seagal]] and [[Chuck Norris]] to defeat Nightmare's army.


== Commercials ==
* A recent MasterCard commercial featured several food mascots (from Count Chocula to the Pillsbury Doughboy) eating dinner -- with [[Crowning Moment of Awesome|Mr. Clean doing the dishes]].
* USA Network's commercials play this for laughs, having various combinations of characters from their shows (''Burn Notice'', ''Monk'', ''Psych'', others) encounter each other and make idle conversation.
* UK example: [http://www.youtube.com/watch?v=BCfGC_dGn4M The Greatest Minds In Advertising Join Forces] in a 2009 viral for ''[[Comic Relief]]''.



== [[Film]] ==
== [[Film]] ==
* ''[[Who Framed Roger Rabbit]]'' crossed over Disney characters with Warner Bros. and MGM characters, saying that they all co-existed with humans [[Animated Actors|as actors in Hollywood]], and that they all hail from "[[Toon|Toontown]]", which seemed to be half Los Angeles and half [[Alternate Universe]].
* ''[[Who Framed Roger Rabbit?]]'' crossed over Disney characters with Warner Bros. and MGM characters, saying that they all co-existed with humans [[Animated Actors|as actors in Hollywood]], and that they all hail from "[[Toon]]town", which seemed to be half Los Angeles and half [[Alternate Universe]].
* ''[[The Monster Squad]]'' had Dracula as the [[Big Bad]] who controlled all of the other classic movie monsters: [[Frankenstein|Frakenstein's Monster]], the [[Wolf Man]], the [[Creature From the Black Lagoon]] and the [[Mummy]]. There is also a cameo by Abraham Van Helsing.
* ''[[The Monster Squad]]'' had Dracula as the [[Big Bad]] who controlled all of the other classic movie monsters: [[Frankenstein|Frakenstein's Monster]], the [[Wolf Man]], the [[Creature from the Black Lagoon]] and the [[Mummy]]. There is also a cameo by Abraham Van Helsing.
* [http://video.yahoo.com/watch/411762/2393937 The Area 52 scene] in ''[[Looney Tunes Back in Action]]'' involved the heroes facing off against Marvin the Martian, who led a group of sci-fi aliens which included [[The Day of the Triffids|a Triffid plant]], the eponymous ''[[Robot Monster]]'', the mutant from ''[[This Island Earth]]'' and even ''freaking [[Doctor Who (TV)|Daleks]]!''
* [http://video.yahoo.com/watch/411762/2393937 The Area 52 scene]{{Dead link}} in ''[[Looney Tunes: Back in Action]]'' involved the heroes facing off against Marvin the Martian, who led a group of sci-fi aliens which included [[The Day of the Triffids|a Triffid plant]], the eponymous ''[[Robot Monster]]'', the mutant from ''[[This Island Earth]]'' and even ''freaking [[Doctor Who|Daleks]]!''
* Many [[Seltzer and Friedberg]] works, such as ''Epic Movie'' and ''Disaster Movie'', could be considered [[Massive Multiplayer Crossover|Massive Multiplayer Crossovers]], insofar as they feature many characters and plot elements (or [[Shallow Parody|weak parodies]] thereof) from recent movies and mash them all together. By all rights, this really ''should'' produce something worth watching on some level.
* Many [[Seltzer and Friedberg]] works, such as ''Epic Movie'' and ''Disaster Movie'', could be considered Massive Multiplayer Crossovers, insofar as they feature many characters and plot elements (or [[Shallow Parody|weak parodies]] thereof) from then-recent movies and mash them all together. While [[:Category:YMMV|some people]] expect that this should produce something worth watching on some level, others point to the movies as proof that [[Tropes Are Not Legos]].
* A version of this in ''[[Star Trek Generations]]'', which featured the captains of two Enterprises from completely different eras (Kirk and Picard) in the same film. ''[[Star Trek]]'' has done this numerous times, if you consider the different series separate entities of the same intellectual property.
* A version of this in ''[[Star Trek Generations]]'', which featured the captains of two Enterprises from completely different eras (Kirk and Picard) in the same film. ''[[Star Trek]]'' has done this numerous times, if you consider the different series separate entities of the same intellectual property.
* ''[[Van Helsing]]'', which features the eponymous monster hunter battling Dracula, a werewolf, Frankenstein's Monster, Igor and Mr. Hyde.
* ''[[Van Helsing]]'', which features the eponymous monster hunter battling Dracula, a werewolf, Frankenstein's Monster, Igor and Mr. Hyde.
* Done with toys in ''[[Indian in The Cupboard|The Indian In the Cupboard]]''.
* Done with toys in ''[[Indian in The Cupboard|The Indian In the Cupboard]]''.
* And with horror-movie creatures in the ''Waxwork'' movies.
* And with horror-movie creatures in the ''Waxwork'' movies.
* ''[[Toy Story]]'' features many toys from rival companies as major or minor characters including Mr. Potato Head, Barbie, and Legos among many others. (And probably some [[Expy|expies]] too.)
* ''[[Toy Story (franchise)|Toy Story]]'' features many toys from rival companies as major or minor characters including Mr. Potato Head, Barbie, and Legos among many others. (And probably some [[Expy|expies]] too.)
* ''[[The Avengers (Film)|The Avengers]]'' serves as this for the [[Marvel Cinematic Universe]].
* ''[[The Avengers (film)|The Avengers]]'' serves as this for the [[Marvel Cinematic Universe]].
* In 1959 a movie was released called ''[[Alias Jessie James]]'' starring [[Bob Hope]], who was a big fan of TV westerns; he used his clout to include characters from nine different shows in what would turn out to be the first of three Western massive multiplayer crossovers. People appeared in that movie from ''[[The Lone Ranger]]'', ''[[The Gene Autry Show]]'', ''[[Annie Oakley]]'', ''[[Davy Crockett]]'', ''[[The Life And Legend Of Wyatt Earp]]'', ''[[Gunsmoke]]'', ''[[Wagon Train]]'', ''[[Roy Rogers|The Roy Rogers Show]]'' and ''[[Maverick (TV)|Maverick]]''.
* In 1959 a movie was released called ''[[Alias Jessie James]]'' starring [[Bob Hope]], who was a big fan of TV westerns; he used his clout to include characters from nine different shows in what would turn out to be the first of three Western massive multiplayer crossovers. People appeared in that movie from ''[[The Lone Ranger]]'', ''[[The Gene Autry Show]]'', ''[[Annie Oakley]]'', ''[[Davy Crockett]]'', ''[[The Life And Legend Of Wyatt Earp]]'', ''[[Gunsmoke]]'', ''[[Wagon Train]]'', ''[[Roy Rogers|The Roy Rogers Show]]'' and ''[[Maverick (TV series)|Maverick]]''.
* In the 40th Anniversary ''OOO, Den-O, All Riders: Let's Go [[Kamen Rider]]'' has all of the main riders from [[Kamen Rider (TV)|Kamen Rider #1]] to ''[[Kamen Rider OOO]]''.
* In the 40th Anniversary ''OOO, Den-O, All Riders: Let's Go [[Kamen Rider]]'' has all of the main riders from [[Kamen Rider (TV series)|Kamen Rider #1]] to ''[[Kamen Rider OOO]]''.



== [[Literature]] ==
== [[Literature]] ==
* [[Science Fiction]] author [[Philip Jose Farmer|Philip José Farmer's]] [http://en.wikipedia.org/wiki/Wold_Newton_family Wold-Newton] [[The Verse|universe]] includes scores of [[Public Domain Character|public domain characters]] as well as many characters popular from early [[Radio Drama]] and film, such as [[The Shadow]] and Tarzan, who are not quite out of copyright. [[Fanfic|Fans]] have added many modern TV characters to the list.
* [[Science Fiction]] author [[Philip Jose Farmer|Philip José Farmer's]] [[wikipedia:Wold Newton family|Wold-Newton]] [[The Verse|universe]] includes scores of [[Public Domain Character|public domain characters]] as well as many characters popular from early [[Radio Drama]] and film, such as [[The Shadow]] and Tarzan, who are not quite out of copyright. [[Fanfic|Fans]] have added many modern TV characters to the list.
* [[Philip Jose Farmer|Philip José Farmer's]] ''[[Riverworld]]'' series does this with actual people from history.
* [[Philip Jose Farmer|Philip José Farmer's]] ''[[Riverworld]]'' series does this with actual people from history.
* [[Kim Newman]] once wrote a short story about Terry and Bob of the British sitcom ''The Likely Lads'' fighting in the Vietnam war with William of Richmal Crompton's old ''Just William'' stories and other fictional characters.
* [[Kim Newman]] once wrote a short story about Terry and Bob of the British sitcom ''The Likely Lads'' fighting in the Vietnam war with William of Richmal Crompton's old ''Just William'' stories and other fictional characters.
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** A fairly extensive list of specific references can be found [http://www.anitra.net/commonwealth/refindex.html here].
** A fairly extensive list of specific references can be found [http://www.anitra.net/commonwealth/refindex.html here].
* [[Robert A. Heinlein]]'s ''[[The Number of the Beast]]'' features a [[Time Travel]] device that does double duty as a portal into [[The Multiverse]], allowing his characters to visit every fictional universe ever, including all of Heinlein's own novels. They coin the term "World as Myth" to describe the [[Recursive Canon]] necessary to make this work, and wind up hosting a convention for just about every [[Science Fiction]] character ever.
* [[Robert A. Heinlein]]'s ''[[The Number of the Beast]]'' features a [[Time Travel]] device that does double duty as a portal into [[The Multiverse]], allowing his characters to visit every fictional universe ever, including all of Heinlein's own novels. They coin the term "World as Myth" to describe the [[Recursive Canon]] necessary to make this work, and wind up hosting a convention for just about every [[Science Fiction]] character ever.
* Spider Robinson's ''[[Callahans Crosstime Saloon (Literature)|Callahans Crosstime Saloon]]'' series - including ''Callahan's Lady'' - contains cameos from characters created by crime writer Donald E. Westlake, SF legend Robert Heinlein, and even classic British humourist [[PG Wodehouse (Creator)|PG Wodehouse]], all interacting with each other. (Most likely inspired by Heinlein's ''[[The Number of the Beast]]'', mentioned above.)
* Spider Robinson's ''[[Callahan's Crosstime Saloon|Callahans Crosstime Saloon]]'' series - including ''Callahan's Lady'' - contains cameos from characters created by crime writer Donald E. Westlake, SF legend Robert Heinlein, and even classic British humourist [[P. G. Wodehouse|PG Wodehouse]], all interacting with each other. (Most likely inspired by Heinlein's ''[[The Number of the Beast]]'', mentioned above.)
* [[Simon R Green]]'s ''[[Nightside]]'' take place in a secret city under London that's a giant crossoverfest. John Taylor, Green's protagonist, has met characters from all manner of books, movies, television shows, and other assorted places though they are largely referred to in vague, shadowy terms so he doesn't violate the copyrights too badly. There's everything from a [[Doctor Who (TV)|Traveling Doctor]] who had a trick with celery to having to exorcise Kandarian demons from his answering machine to giant 'bears of little brain' that work for the auction house.
* [[Simon R. Green]]'s ''[[Nightside]]'' take place in a secret city under London that's a giant crossoverfest. John Taylor, Green's protagonist, has met characters from all manner of books, movies, television shows, and other assorted places though they are largely referred to in vague, shadowy terms so he doesn't violate the copyrights too badly. There's everything from a [[Doctor Who|Traveling Doctor]] who had a trick with celery to having to exorcise Kandarian demons from his answering machine to giant 'bears of little brain' that work for the auction house.
** For even more fun, representatives from most of Green's other series (the ''[[Deathstalker]]'' novels, the ''Darkwood'' books, etc) show up, waiting around to speak to Father Time.
** For even more fun, representatives from most of Green's other series (the ''[[Deathstalker]]'' novels, the ''Darkwood'' books, etc) show up, waiting around to speak to Father Time.
* While [[Neil Gaiman]]'s short story ''A Study in Emerald'' is primarily a crossover between the works of [[HP Lovecraft]] and Arthur Conan Doyle, it contains subtle hints that characters such as [[Dracula]], [[Frankenstein]], and Dr. Jekyll also exist in the same universe.
* While [[Neil Gaiman]]'s short story ''A Study in Emerald'' is primarily a crossover between the works of [[H.P. Lovecraft]] and Arthur Conan Doyle, it contains subtle hints that characters such as [[Dracula]], [[Frankenstein]], and Dr. Jekyll also exist in the same universe.
* ''[[A Night in The Lonesome October]]'' features [[Jack the Ripper]], [[Sherlock Holmes]], [[Dracula]], [[Frankenstein]], Rasputin, [[The Wolfman]], and many others in a complex game determining whether or not [[Cthulhu]] and the other elder gods return to Earth. Interestingly, Jack is the hero...
* ''[[A Night in the Lonesome October]]'' features [[Jack the Ripper]], [[Sherlock Holmes]], [[Dracula]], [[Frankenstein]], Rasputin, [[The Wolf Man]], and many others in a complex game determining whether or not [[Cthulhu]] and the other elder gods return to Earth. Interestingly, Jack is the hero...
* And again in [[Roger Zelazny]]'s book "Roadmarks" where Red runs across a short man with a small mustache whom Red refers to as "Adolph" driving a battered black Volkswagen, and later on in the book he makes a call to someone he calls "Doc", who is described as "A big golden-eyed guy with one hell of a suntan, wearing a torn shirt, and driving a hot little 1920's roadster" which could only have been [[Doc Savage]].
* And again in [[Roger Zelazny]]'s book "Roadmarks" where Red runs across a short man with a small mustache whom Red refers to as "Adolph" driving a battered black Volkswagen, and later on in the book he makes a call to someone he calls "Doc", who is described as "A big golden-eyed guy with one hell of a suntan, wearing a torn shirt, and driving a hot little 1920's roadster" which could only have been [[Doc Savage]].
** [[Doc Savage]] villain John Sunlight also makes an appearance.
** [[Doc Savage]] villain John Sunlight also makes an appearance.
* Zelazny was a comic book reader and fan. In _Blood of Amber_ Merlin has dinner at Bloody (Last Deceased Owner's Name)'s place--Boody Andy's at the time--while a gent (with a pronounced scar through his eye) eats at a neighboring table and warns Merlin to show a blade so the local roughs get no ideas. "Old John" was clearly John Ostrander and Tim Truman's mercenary John Gaunt (aka Grinner, [[Grim Jack]]) from Cynosure, a cross-dimensional city in a multiverse adjacent to Amber. The two roughs did not last the night.
* Zelazny was a comic book reader and fan. In ''[[The Chronicles of Amber|Blood of Amber]]'', Merlin has dinner at Bloody (Last Deceased Owner's Name)'s place—Boody Andy's at the time—while a gent (with a pronounced scar through his eye) eats at a neighboring table and warns Merlin to show a blade so the local roughs get no ideas. "Old John" was clearly John Ostrander and Tim Truman's mercenary John Gaunt (aka Grinner, [[Grim Jack]]) from Cynosure, a cross-dimensional city in a multiverse adjacent to Amber. The two roughs did not last the night.
* The works of [[Dr. Seuss]] were combined into a Broadway musical called ''[[Seussical]]'', which mainly takes its story from ''[[Horton Hears a Who (Literature)|Horton Hears a Who]]'', ''Horton Hatches the Egg'', and ''The One Feather Tail of Miss Gertrude McFuzz'', but contains elements and characters from ''I Had Trouble in Getting to Solla Sollew'', ''The Butter Battle Book'', ''[[How the Grinch Stole Christmas (Literature)|How the Grinch Stole Christmas]]'', and more. And of course, they have [[The Cat in The Hat]] to move the plot around.
* The works of [[Dr. Seuss]] were combined into a Broadway musical called ''[[Seussical]]'', which mainly takes its story from ''[[Horton Hears a Who!]]'', ''Horton Hatches the Egg'', and ''The One Feather Tail of Miss Gertrude McFuzz'', but contains elements and characters from ''I Had Trouble in Getting to Solla Sollew'', ''The Butter Battle Book'', ''[[How the Grinch Stole Christmas! (novel)|How the Grinch Stole Christmas]]'', and more. And of course, they have [[The Cat in the Hat]] to move the plot around.
** Jim Henson's ''The Wubbulous World of Dr Seuss'' did something similar, with Yertle the Turtle as a recurring villain.
** Jim Henson's ''The Wubbulous World of Dr Seuss'' did something similar, with Yertle the Turtle as a recurring villain.
* Stephen King's [[The Dark Tower]] series spans across the majority of his prior works.
* Stephen King's [[The Dark Tower]] series spans across the majority of his prior works.
* The ''[[Harold Shea]]'' series of short stories are about Harold and company visiting various [[The Verse|settings]] taken from mythology and [[Public Domain Character|public domain fiction]], usually one per story.
* The ''[[Harold Shea]]'' series of short stories are about Harold and company visiting various [[The Verse|settings]] taken from mythology and [[Public Domain Character|public domain fiction]], usually one per story.
* Brazilian author [http://en.wikipedia.org/wiki/Monteiro_Lobato Monteiro Lobato] took this trope to [[Rule of Cool|insane]] [[There Is No Kill Like Overkill|levels]] in his kid's books set in the ''Yellow Woodpecker Farm''. The eponymous farm is an interdimensional nexus to, essentially, every fantasy and adventure fiction character ever written, including but not limited to the Greek Gods, [[Sherlock Holmes]], the Neverland people, the ''[[Arabian Nights (Literature)|Arabian Nights]]'', the fables from [[Aesop (Creator)|Aesop]], [[The Brothers Grimm (Creator)|Grimm]], [[Hans Christian Andersen|Andersen]], [[The Three Musketeers (Literature)|The Three Musketeers]], medieval Knighs etc etc etc ad infinitum. He even managed to throw in some characters copyright laws didn't allow him to. To top if off, characters native to the series' own universe are not few in number.
* Brazilian author [[wikipedia:Monteiro Lobato|Monteiro Lobato]] took this trope to [[Rule of Cool|insane]] [[There Is No Kill Like Overkill|levels]] in his kids' books set in the ''Yellow Woodpecker Farm''. The eponymous farm is an interdimensional nexus to, essentially, every fantasy and adventure fiction character ever written, including but not limited to the Greek Gods, [[Sherlock Holmes]], the Neverland people, the ''[[Arabian Nights]]'', the fables from [[Aesop's Fables|Aesop]], [[The Brothers Grimm (creator)|Grimm]], [[Hans Christian Andersen|Andersen]], [[The Three Musketeers (novel)|The Three Musketeers]], medieval Knighs etc etc etc ad infinitum. He even managed to throw in some characters copyright laws didn't allow him to. To top if off, characters native to the series' own universe are not few in number.
* [[Jasper Fforde|Jasper Fforde's]] like this trope a lot. Pretty much every Bookworld character in the [[Thursday Next]] series comes from another book. According to the rules of its [[The Verse|universe]] ''every'' book crosses over with it. [[Meta Fiction|Including itself]]. Many of the characters from the Nursery Crimes series [[Exactly What It Says On the Tin|are right out of]] [[Nursery Rhyme|nursery rhymes]].
* [[Jasper Fforde]] likes this trope a lot. Pretty much every Bookworld character in the ''[[Thursday Next]]'' series comes from another book. According to the rules of its [[The Verse|universe]] ''every'' book crosses over with it. [[Meta Fiction|Including itself]]. Many of the characters from the Nursery Crimes series [[Exactly What It Says on the Tin|are right out of]] [[Nursery Rhyme|nursery rhymes]].
* Peter David wrote two novels where X-Men characters appeared in the Star Trek: The Next Generation universe.
* Peter David wrote two novels where ''[[X-Men]]'' characters appeared in the ''[[Star Trek: The Next Generation]]'' universe.
* [[L Frank Baum]] did this in the fourth book of the Oz series, ''The Road to Oz,'' by inviting characters from his other books to attend Princess Ozma's birthday party, hoping to get his Oz readers interested in those other non-Oz stories. This included everybody up to and including [[Santa Claus]] (as in ''The Life and Adventures of''). The implication, of course, is that every book Baum ever wrote takes place in the same universe as the Oz books.
* [[L. Frank Baum]] did this in the fourth book of the Oz series, ''The Road to Oz,'' by inviting characters from his other books to attend Princess Ozma's birthday party, hoping to get his Oz readers interested in those other non-Oz stories. This included everybody up to and including [[Santa Claus]] (as in ''The Life and Adventures of''). The implication, of course, is that every book Baum ever wrote takes place in the same universe as the Oz books.
* James A. Owen's ''Chronicles of the Imaginarium Geographica'' does this with pretty much every major work of fantasy, history, and real life. It's awesome.
* James A. Owen's ''[[The Chronicles of the Imaginarium Geographica]]'' does this with pretty much every major work of fantasy, history, and real life. It's awesome.


== [[Live-Action TV]] ==

* The "Night of Elizabeth Taylor", broadcast on CBS around 1995-96, saw a diamond necklace lost by [[Elizabeth Taylor]] became a common plot element linking four [[Sitcom|SitComs]] -- ''[[The Nanny]]'', ''Cant Hurry Love'', ''[[Murphy Brown]]'' and ''High Society''—in one massive crossover. It was intended as an embedded advertisement for Taylor's new perfume, Black Pearls.
== [[Live Action TV]] ==
* The "Night of Elizabeth Taylor", broadcast on CBS around 1995-96, saw a diamond necklace lost by [[Elizabeth Taylor]] became a common plot element linking four [[Sit Com|SitComs]] -- ''[[The Nanny]]'', ''Cant Hurry Love'', ''[[Murphy Brown]]'' and ''High Society'' -- in one massive crossover. It was intended as an embedded advertisement for Taylor's new perfume, Black Pearls.
* Disney did a triple-episode MMC with three of its shows. The show was entitled ''[[That's So Raven|That's So]] [[The Suite Life of Zack and Cody|Suite Life Of]] [[Hannah Montana]]'', with one classed as a Suite Life episode, one as a Raven episode, and one as a Hannah Montana episode, where Hannah and Raven visited the hotel the twins live in.
* Disney did a triple-episode MMC with three of its shows. The show was entitled ''[[That's So Raven|That's So]] [[The Suite Life of Zack and Cody|Suite Life Of]] [[Hannah Montana]]'', with one classed as a Suite Life episode, one as a Raven episode, and one as a Hannah Montana episode, where Hannah and Raven visited the hotel the twins live in.
** Likewise, there's the ''Wish Gone Amiss'' triple-episode, except it is more loosely tied together. It all involves the title characters from ''[[Cory in The House]]'', ''[[The Suite Life of Zack and Cody]]'', and ''[[Hannah Montana]]'' making a wish on apparently the same shooting star. Each episode has its own method of returning to the [[Status Quo Is God|Status Quo]] -- Cory gets a literal [[Reset Button]], Zack and Cody's wish was [[All Just a Dream|all just Zack's dream]], and Hannah returns her life to normal when Jackson unwittingly wishes that the world did not know Hannah's double life.
** Likewise, there's the ''Wish Gone Amiss'' triple-episode, except it is more loosely tied together. It all involves the title characters from ''[[Cory in The House]]'', ''[[The Suite Life of Zack and Cody]]'', and ''[[Hannah Montana]]'' making a wish on apparently the same shooting star. Each episode has its own method of returning to the [[Status Quo Is God|Status Quo]]—Cory gets a literal [[Reset Button]], Zack and Cody's wish was [[All Just a Dream|all just Zack's dream]], and Hannah returns her life to normal when Jackson unwittingly wishes that the world did not know Hannah's double life.
** There's also the ''[[Wizards of Waverly Place|Wizards]] [[The Suite Life of Zack and Cody|On Deck]] with [[Hannah Montana]]'' that goes by the same formula that the ''That's So Suite Life of Hannah Montanna'' did, except with the stars visiting the hotel's ship instead of the hotel itself.
** There's also the ''[[Wizards of Waverly Place|Wizards]] [[The Suite Life of Zack and Cody|On Deck]] with [[Hannah Montana]]'' that goes by the same formula that the ''That's So Suite Life of Hannah Montanna'' did, except with the stars visiting the hotel's ship instead of the hotel itself.
* ''[[Kamen Rider Decade]]'' is this in regards to the Heisei era ''[[Kamen Rider]]'' shows. The main character dimension jumps into [[Alternate Universe|alternate universes]] based on the 9 previous ''[[Kamen Rider]]'' series of the last 10 years (as well as the canonical universe of ''[[Samurai Sentai Shinkenger]]''). Plus, the first movie features every main Rider created before Decade, even ones that only had appeared in one-shot movies previously.
* ''[[Kamen Rider Decade]]'' is this in regards to the Heisei era ''[[Kamen Rider]]'' shows. The main character dimension jumps into [[Alternate Universe|alternate universes]] based on the 9 previous ''[[Kamen Rider]]'' series of the last 10 years (as well as the canonical universe of ''[[Samurai Sentai Shinkenger]]''). Plus, the first movie features every main Rider created before Decade, even ones that only had appeared in one-shot movies previously.
** The second movie, a [[Grand Finale]], even includes some [[Post Modernism]] commentary on the "interesting effects on the fiction chosen" mentionned in the opening paragraphs. To quote the original universe [[Kamen Rider Kiva|Wataru]]: "The tales of the Riders were something that would be eventually lost to time. But because of Decade's battles, they will remain fresh in people's minds..."
** The second movie, a [[Grand Finale]], even includes some [[Post Modernism]] commentary on the "interesting effects on the fiction chosen" mentionned in the opening paragraphs. To quote the original universe [[Kamen Rider Kiva|Wataru]]: "The tales of the Riders were something that would be eventually lost to time. But because of Decade's battles, they will remain fresh in people's minds..."
* Similarly to ''[[Kamen Rider Decade]]'', ''[[Kaizoku Sentai Gokaiger (TV)|Kaizoku Sentai Gokaiger]]'' is a crossover series. But compared to ''Decade'', in which the main character could only be Riders of the last decade, the Gokaigers can transform into any of the Sentai from the past 34 teams (barring [[Sixth Ranger|Sixth Rangers]] - that is, until their own [[Sixth Ranger]] joined up). Additionally, while ''Decade'' established that every past ''Kamen Rider'' was its own universe, ''Gokaiger'' establishes that all [[Super Sentai]] took place in a single universe.
* Similarly to ''[[Kamen Rider Decade]]'', ''[[Kaizoku Sentai Gokaiger]]'' is a crossover series. But compared to ''Decade'', in which the main character could only be Riders of the last decade, the Gokaigers can transform into any of the Sentai from the past 34 teams (barring [[Sixth Ranger]]s - that is, until their own [[Sixth Ranger]] joined up). Additionally, while ''Decade'' established that every past ''Kamen Rider'' was its own universe, ''Gokaiger'' establishes that all [[Super Sentai]] took place in a single universe.
** There's also ''[[Kaizoku Sentai Gokaiger vs. Space Sheriff Gavan the Movie (Film)|Kaizoku Sentai Gokaiger vs. Space Sheriff Gavan the Movie]]'' - yeah, that means the [[Space Sheriff Gavan|Space]] [[Space Sheriff Sharivan|Sheriff]] [[Space Sheriff Shaider|Trilogy]] is revealed to be set in the Sentai universe too.
** There's also ''[[Kaizoku Sentai Gokaiger vs. Space Sheriff Gavan: The Movie|Kaizoku Sentai Gokaiger vs. Space Sheriff Gavan the Movie]]'' - yeah, that means the [[Space Sheriff Gavan|Space]] [[Space Sheriff Sharivan|Sheriff]] [[Space Sheriff Shaider|Trilogy]] is revealed to be set in the Sentai universe too.
*** Perfectly justified that Inazuma Ginga in [[Taiyou Sentai Sun Vulcan|Sun Vulcan]] episode 45 was wanted by the Galactic Police. Shozo Uehara who wrote the character would be the main writer of the Space Sheriff trilogy.
*** Perfectly justified that Inazuma Ginga in [[Taiyou Sentai Sun Vulcan|Sun Vulcan]] episode 45 was wanted by the Galactic Police. Shozo Uehara who wrote the character would be the main writer of the Space Sheriff trilogy.
** It all comes to a head with ''[[Kamen Rider X Super Sentai Super Hero Taisen (Film)|Kamen Rider X Super Sentai Super Hero Taisen]]''.
** It all comes to a head with ''[[Kamen Rider x Super Sentai: The Great Superhero War|Kamen Rider X Super Sentai Super Hero Taisen]]''.
* ''[http://www.childrenspartyatthepalace.com/ The Children's Party at the Palace]'', a British production broadcast live from Buckingham Palace on June 25, 2006, celebrated Queen Elizabeth II's 80th birthday with a wild romp featuring dozens of literary and TV characters including (among many others) Cruella DeVille, [[Peter Pan]] and Captain Hook, Sir Topham Hatt from ''[[Thomas the Tank Engine]]'', [[Wallace and Gromit]], the White Rabbit from ''[[Alice in Wonderland]]'', [[Enid Blyton]]'s ''The Famous Five'', [[Harry Potter]], Ron Weasley, Hermione Granger and Neville Longbottom from the ''[[Harry Potter]]'' movies, and starred the Queen as herself.
* ''[https://web.archive.org/web/20130603170552/http://www.childrenspartyatthepalace.com/ The Children's Party at the Palace]'', a British production broadcast live from Buckingham Palace on June 25, 2006, celebrated Queen Elizabeth II's 80th birthday with a wild romp featuring dozens of literary and TV characters including (among many others) Cruella DeVille, [[Peter Pan]] and Captain Hook, Sir Topham Hatt from ''[[Thomas the Tank Engine]]'', [[Wallace and Gromit]], the White Rabbit from ''[[Alice in Wonderland]]'', [[Enid Blyton]]'s ''The Famous Five'', [[Harry Potter]], Ron Weasley, Hermione Granger and Neville Longbottom from the ''[[Harry Potter]]'' movies, and starred the Queen [[As Himself|as herself]].
* The ''[[Sabrina the Teenage Witch]]'' episode "Inna-Gadda-Sabrina" extended its story through the following three shows that night: ''[[Boy Meets World]]'', ''You Wish'', and ''[[Teen Angel]]''. Each show was set in a different time period in going with the theme.
* The ''[[Sabrina the Teenage Witch]]'' episode "Inna-Gadda-Sabrina" extended its story through the following three shows that night: ''[[Boy Meets World]]'', ''You Wish'', and ''[[Teen Angel]]''. Each show was set in a different time period in going with the theme.
** It wasn't the first time - in fact, quite a few crossovers spanned the entire TGIF lineup from time to time, and even an occasional though less involving tie-in for all ABC weekly sitcoms during this period.
** It wasn't the first time - in fact, quite a few crossovers spanned the entire TGIF lineup from time to time, and even an occasional though less involving tie-in for all ABC weekly sitcoms during this period.
** There was also one that was linked by Steve Urkel. He ends one episode of ''[[Family Matters]]'' by blasting through the Winslow's roof in a jet pack, and he crashes into the Lambert's roof at the beginning of the an episode of ''[[Step By Step]]'' where the plot centers around him. I forget if any other shows were connected as well.
** There was also one that was linked by Steve Urkel. He ends one episode of ''[[Family Matters]]'' by blasting through the Winslows' roof in a jet pack, and he crashes into the Lamberts' roof at the beginning of the an episode of ''[[Step by Step]]'' where the plot centers around him. I forget if any other shows were connected as well.
* A very simple one, but the ''iStart A Fan War'' episode of ''[[I Carly]]'' included characters from [[Drake and Josh]] and [[Zoey 101]], helping to fill out the [[Nick Verse]].
* A very simple one, but the ''iStart A Fan War'' episode of ''[[iCarly]]'' included characters from ''[[Drake and Josh]]'' and ''[[Zoey 101]]'', helping to fill out the [[Nick Verse]].
* ''[[A Muppet Family Christmas]]'' included characters from all Muppet-related programmes: ''[[The Muppet Show]]'', ''[[Sesame Street]]'', ''[[Fraggle Rock]]'' and even ''[[Muppet Babies]]''.
* ''[[A Muppet Family Christmas]]'' included characters from all Muppet-related programmes: ''[[The Muppet Show]]'', ''[[Sesame Street]]'', ''[[Fraggle Rock]]'' and even ''[[Muppet Babies]]''.
** Its conclusion even featured [[Crowning Moment of Heartwarming|a brief cameo of Jim Henson as himself]].
** Its conclusion even featured [[Crowning Moment of Heartwarming|a brief cameo of Jim Henson as himself]].
* In ''[[Doctor Who (TV)|Doctor Who]]'', the climax of the Second Doctor serial ''The Mind Robber''. D'Artagnan vs. Cyrano de Bergerac! Blackbeard vs. Sir Lancelot! Plus Gulliver and Rapunzel on the sidelines.
* In ''[[Doctor Who]]'', the climax of the Second Doctor serial ''The Mind Robber''. D'Artagnan vs. Cyrano de Bergerac! Blackbeard vs. Sir Lancelot! Plus Gulliver and Rapunzel on the sidelines.
* ''[[Law and Order]]'' crossed over with ''[[Homicide Life On the Street]]'' a few times, until they eventually just decided they were set in the same continuity altogether, to the point of having [[John Munch]], who originated in the latter show, permanently set up shop in the former.
* ''[[Law and Order]]'' crossed over with ''[[Homicide: Life on the Street]]'' a few times, until they eventually just decided they were set in the same continuity altogether, to the point of having [[John Munch]], who originated in the latter show, permanently set up shop in the former.
* [http://home.vicnet.net.au/~kwgow/crossovers.html The Tommy Westphall Hypothesis] states that dozens if not hundreds of television series have all happened within the mind of [[St Elsewhere|a young autistic boy living in Baltimore]].
* [https://web.archive.org/web/20060824200044/http://home.vicnet.net.au/~kwgow/crossovers.html The Tommy Westphall Hypothesis] states that dozens if not hundreds of television series have all happened within the mind of [[St. Elsewhere|a young autistic boy living in Boston]].
** [[John Munch]] is a central figure in this Hypothesis.
** [[John Munch]] is a central figure in this Hypothesis.
* ''[[The Earth Day Special]]'', which aired on [[ABC]] in 1990, was a huge crossover featuring just about every pop culture icon from [[The Eighties]] in a very bizarre, thoroughly nonsensical plot.
* ''[[The Earth Day Special]]'', which aired on [[American Broadcasting Company|ABC]] in 1990, was a huge crossover featuring just about every pop culture icon from [[The Eighties]] in a very bizarre, thoroughly nonsensical plot.
** Also in 1990, ''[[Cartoon All Stars to The Rescue]]'', the ultimate [[Very Special Episode]] combining well over a dozen Eighties cartoon characters. Aired once and only once, it's full of [[Narm]] yet also bizarrely entertaining. Rumor has it that it's never been aired since because Jim Davis claimed he hadn't authorized [[Garfield]]'s inclusion in the show.
** Also in 1990, ''[[Cartoon All-Stars to the Rescue]]'', the ultimate [[Very Special Episode]] combining well over a dozen Eighties cartoon characters. Aired once and only once, it's full of [[Narm]] yet also bizarrely entertaining. Rumor has it that it's never been aired since because Jim Davis claimed he hadn't authorized [[Garfield]]'s inclusion in the show.
* In the ''[[CSI (TV)|CSI]]''-verse, the original series crossed over with the Miami series in 2002 to serve as the pilot for the latter; the Miami series then crossed over with the New York series in 2004 to serve as that series' pilot, and the series crossed over again in a two-hour storyline in 2005. The original series also crossed over with ''[[Without a Trace (TV)|Without a Trace]]'' in 2007 a two-hour storyline across both series. Following the departure of William Petersen (who opposed the spinoffs and did not appear in any scenes featuring the Miami team in "Cross Jurisdictions"), CBS put together a massive crossover in 2009 spanning all three series that involved the Las Vegas series' Raymond Langston going to Miami and New York while investigating a human trafficking organisation.
* In the ''[[CSI]]''-verse, the original series crossed over with the Miami series in 2002 to serve as the pilot for the latter; the Miami series then crossed over with the New York series in 2004 to serve as that series' pilot, and the series crossed over again in a two-hour storyline in 2005. The original series also crossed over with ''[[Without a Trace]]'' in 2007 a two-hour storyline across both series. Following the departure of William Petersen (who opposed the spinoffs and did not appear in any scenes featuring the Miami team in "Cross Jurisdictions"), CBS put together a massive crossover in 2009 spanning all three series that involved the Las Vegas series' Raymond Langston going to Miami and New York while investigating a human trafficking organisation.
* The 2009 ''[[Two Pints of Lager and A Packet of Crisps]]'' [[Comic Relief]] special, which brought in characters from BBC Three's other sitcoms ''[[Grown Ups]]'' and ''[[Coming of Age]]''. And yes, Sheridan Smith was [[Acting for Two]].
* The 2009 ''[[Two Pints of Lager and a Packet of Crisps]]'' [[Comic Relief]] special, which brought in characters from BBC Three's other sitcoms ''[[Grown Ups]]'' and ''[[Coming of Age]]''. And yes, Sheridan Smith was [[Acting for Two]].
* The second western MMC took place a year after the first on what seemed to be an ordinary episode of ''[[Maverick (TV)|Maverick]]'' called "Hadley's Hunters"; during the course of that hour he ran into people from 5 other shows: ''[[Lawman (TV)|Lawman]]'', ''[[Cheyenne]]'', ''[[Bronco]]'', ''[[Sugarfoot]]'', and he stops by the office from ''[[Colt 45]]'' but nobody was home (a reference to the show being recently canceled).
* The second western MMC took place a year after the first on what seemed to be an ordinary episode of ''[[Maverick (TV series)|Maverick]]'' called "Hadley's Hunters"; during the course of that hour he ran into people from 5 other shows: ''[[Lawman]]'', ''[[Cheyenne]]'', ''[[Bronco]]'', ''[[Sugarfoot]]'', and he stops by the office from ''[[Colt 45]]'' but nobody was home (a reference to the show being recently canceled).
** Strangely he also ran into the parking lot attendant from ''[[77 Sunset Strip]]'' which was set in the 1960s -- I guess he had an ancestor who lived in the old west.
** Strangely he also ran into the parking lot attendant from ''[[77 Sunset Strip]]'' which was set in the 1960s—I guess he had an ancestor who lived in the old west.
* The final western MMC took place over 30 years later in the made for tv movie ''The Gambler Returns: The Luck of the Draw'', where the title character crosses over with 10 different series. During the course of the film [[The Gambler]] meets people from ''[[Bat Masterson]]'', ''[[The Life And Legend Of Wyatt Earp]]'', ''[[Maverick (TV)|Maverick]]'', ''[[Cheyenne]]'', ''[[Kung Fu (TV)|Kung Fu]]'', ''[[The Rifleman]]'', ''[[The Westerner]]'', ''[[The Virginian]]'', and ''[[Rawhide]]'', plus the main game was in honor of the main character from ''[[Have Gun Will Travel]]''.
* The final western MMC took place over 30 years later in the made for tv movie ''The Gambler Returns: The Luck of the Draw'', where the title character crosses over with 10 different series. During the course of the film [[The Gambler]] meets people from ''[[Bat Masterson]]'', ''[[The Life And Legend Of Wyatt Earp]]'', ''[[Maverick (TV series)|Maverick]]'', ''[[Cheyenne]]'', ''[[Kung Fu]]'', ''[[The Rifleman]]'', ''[[The Westerner]]'', ''[[The Virginian]]'', and ''[[Rawhide]]'', plus the main game was in honor of the main character from ''[[Have Gun Will Travel]]''.


== [[Oral Tradition]], Folklore, Myths and Legends ==

* The ''[[Argonautica]]'' (a.k.a. ''Jason and the Argonauts'') by Apollonius of Rhodes (3rd century BCE) is one of the very first Massive Multiplayer Crossovers, arranged in what would become a fairly classic method—basically throwing one or two dozen heroes from various separate Greek myth cycles together on a boat with a common mission. This of course makes the Massive Multiplayer Crossover [[Older Than Feudalism]].
== Mythology and Religion ==
** Many of the same characters also appear in the story of the Kalydonian Boar Hunt - which, [[Depending on the Writer]], may occur before or after ''The Argonautica''.
* The ''[[Argonautica]]'' (a.k.a. ''Jason and the Argonauts'') by Apollonius of Rhodes (3rd century BCE) is one of the very first [[Massive Multiplayer Crossover|Massive Multiplayer Crossovers]], arranged in what would become a fairly classic method -- basically throwing one or two dozen heroes from various separate Greek myth cycles together on a boat with a common mission. This of course makes the [[Massive Multiplayer Crossover]] [[Older Than Feudalism]].
** Many of the same characters also appear in the story of the Kalydonian Boar Hunt - which, [[Depending On the Author]], may occur before or after ''The Argonautica''.
* According to some religious studies texts, this has also gone on in many, ''many'' other myths: the most notable involve various saints meeting each other. This goes on even today.
* According to some religious studies texts, this has also gone on in many, ''many'' other myths: the most notable involve various saints meeting each other. This goes on even today.
* [[King Arthur|Arthurian Myth]] formed this way, starting with stories about a Celtic chieftain and slowly incorporating other works into itself, including ''[[Sir Gawaine and the Green Knight]]'' and an entire cycle of French poetry that introduced Lancelot.

** Geoffrey of Monmouth, in his Vita Merlini (The life of Merlin), combined the legends of the poets/wizards Myrddin Wyllt (Merlin), and Taliesin into the Arthurian legend.
** Wolfram von Eschenbach likewise connected the Arthurian legend to the otherwise unrelated legends of Prester John (a mythical Indian/African king), and Lohengrin, the Knight of the Swan, in his epic poem ''Parzival'' by stating that Feirefiz (Parzival's African half-brother) was Prester John's father, and that Parzival was Lohengrin's father.
** [[Robin Hood]] and Maid Marian likewise appear in T.H. White's [[The Once and Future King]] quartet.
** [[The Weirdstone of Brisingamen]] Adds in [[Norse Mythology]] to the mix.
* Similarly, the [[Robin Hood]] stories started with a poem about a outlaw (sort of a medieval version of "The Ballad of Jesse James"), and turned into a collection of stories which kept getting characters from other contexts added to it—like Maid Marian, who originally appeared in generic May Day songs.


== [[New Media]] ==
== [[New Media]] ==
* Weezer's [http://www.youtube.com/watch?v=muP9eH2p2PI Pork And Beans] music video. It's got almost everything that ever appeared on Youtube short of OK Go and [[The Angry Video Game Nerd (Web Video)|The Angry Video Game Nerd]].
* Weezer's [http://www.youtube.com/watch?v=muP9eH2p2PI "Pork And Beans"] music video. It's got almost everything that ever appeared on Youtube short of [[OK Go]] and [[The Angry Video Game Nerd]].
** There's an [http://www.youtube.com/watch?v=xjbahK6Rk0U updated version]. It is as though the internet gave birth.
** There's an [http://www.youtube.com/watch?v=xjbahK6Rk0U updated version]. It is as though the internet gave birth.
* The Machinima "Beans". Firstly, it crosses over characters from three different series and is made by three different machinima directors, then the storyline involves various internet memes... Oh. And it's made on ''[[Super Smash Bros]]''. Making it a crossover on a crossover.
* The Machinima "Beans". Firstly, it crosses over characters from three different series and is made by three different machinima directors, then the storyline involves various internet memes... Oh. And it's made on ''[[Super Smash Bros.]]''. Making it a crossover on a crossover.


== [[Newspaper Comics]] ==
* On several occasions over the past couple decades, cartoonists from the same syndicate have indulged in special events in which their characters migrate to each other's strips.


== [[Stand Up Comedy]] ==
== [[Recorded and Stand Up Comedy]] ==
* There's a ''[[Star Trek]]''-related comedy routine in which Mr. Spock, the HAL 9000 computer, and Obi-Wan Kenobi all appear on ''Jeopardy'', in a mental variant of an [[Ultimate Showdown of Ultimate Destiny]]. {{spoiler|Kenobi is declared the winner, but only because he uses the [[Jedi Mind Trick]] on Alex Trebek.}}
* There's a ''[[Star Trek]]''-related comedy routine in which Mr. Spock, the HAL 9000 computer, and Obi-Wan Kenobi all appear on ''Jeopardy'', in a mental variant of an [[Ultimate Showdown of Ultimate Destiny]]. {{spoiler|Kenobi is declared the winner, but only because he uses the [[Jedi Mind Trick]] on Alex Trebek.}}
* Stand-up comedy troupes sometimes feature a series of comedians who usually headline their own shows:
* Stand-up comedy troupes sometimes feature a series of comedians who usually headline their own shows:
Line 158: Line 160:
** ''The Comedians of Comedy''
** ''The Comedians of Comedy''


== [[Tabletop Games]] ==

== Tabletop Games ==
* The [[Spelljammer]] and [[Planescape]] settings were designed with this in mind. Spelljammer in particular has rule books dedicated to detailing the Crystal Spheres of settings such as [[Dragonlance|Krynn]], [[Forgotten Realms|Abeir-Toril]], and [[Greyhawk|Oerth]]. Where as Planescape has portals to every type of world imaginable.
* The [[Spelljammer]] and [[Planescape]] settings were designed with this in mind. Spelljammer in particular has rule books dedicated to detailing the Crystal Spheres of settings such as [[Dragonlance|Krynn]], [[Forgotten Realms|Abeir-Toril]], and [[Greyhawk|Oerth]]. Where as Planescape has portals to every type of world imaginable.
* [[Collectible Card Game|Collectible Card Games]] that operate off of a [[Universal System]] allow for this; the Universal Fighting System lets you pit [[Street Fighter|Chun-Li]] against [[Soul Series|Nightmare]], the VS System crosses over [[Marvel]] and [[DC]], and the Crusade System lets you pair [[Cowboy Bebop|Spike Spiegel]], [[Fullmetal Alchemist|Edward Elric]], and [[Cutie Honey]] with [[Humongous Mecha]] from ''[[Macross]]'', ''[[Super Robot Wars Original Generation]]'', and countless others.
* [[Collectible Card Game]]s that operate off of a [[Universal System]] allow for this; the Universal Fighting System lets you pit [[Street Fighter|Chun-Li]] against [[Soul Series|Nightmare]], the VS System crosses over [[Marvel]] and [[DC]], and the Crusade System lets you pair [[Cowboy Bebop|Spike Spiegel]], [[Fullmetal Alchemist|Edward Elric]], and [[Cutie Honey]] with [[Humongous Mecha]] from ''[[Macross]]'', ''[[Super Robot Wars Original Generation]]'', and countless others.


== [[Theatre]] ==
* ''[[Seussical]]'' has characters from several of Dr. Seuss' books


== [[Video Games]] ==
== [[Video Games]] ==
* ''[[The King of Fighters (Video Game)|The King of Fighters]]'' was the original crossover fighter, taking characters from several [[SNK]] series including ''[[Fatal Fury (Video Game)|Fatal Fury]]'', ''[[Art of Fighting]]'', ''[[Psycho Soldier (Video Game)|Psycho Soldier]]'' and ''[[Ikari Warriors (Video Game)|Ikari Warriors]]''.
* ''[[The King of Fighters]]'' was the original crossover fighter, taking characters from several [[SNK]] series including ''[[Fatal Fury]]'', ''[[Art of Fighting]]'', ''[[Psycho Soldier]]'' and ''[[Ikari Warriors]]''.
** ''[[Neo Geo Battle Coliseum (Video Game)|Neo Geo Battle Coliseum]]'' is an extension of the above, including also characters from ''[[Samurai Shodown (Video Game)|Samurai Shodown]]'', ''[[Last Blade]]'', ''[[World Heroes (Video Game)|World Heroes]]'', ''[[Aggressors Of Dark Kombat]]'' and even ''[[Metal Slug]]''!!!
** ''[[Neo Geo Battle Coliseum]]'' is an extension of the above, including also characters from ''[[Samurai Shodown]]'', ''[[Last Blade]]'', ''[[World Heroes]]'', ''[[Aggressors Of Dark Kombat]]'' and even ''[[Metal Slug]]''!!!
* This is effectively what defines the [[Mascot Fighter]] genre.
* This is effectively what defines the [[Mascot Fighter]] genre.
* A staple of store demo displays in the later 90s, Sega produced ''[[Fighters Megamix]]'', a crossover of ''[[Virtua Fighter]]'', ''[[Fighting Vipers]]'', and a couple one-off games such as ''[[Virtua Cop]]'', ''[[Sonic the Fighters (Video Game)|Sonic the Fighters]]'', and even ''[[Daytona USA]]''.
* A staple of store demo displays in the later 90s, Sega produced ''[[Fighters Megamix]]'', a crossover of ''[[Virtua Fighter]]'', ''[[Fighting Vipers]]'', and a couple one-off games such as ''[[Virtua Cop]]'', ''[[Sonic the Fighters]]'', and even ''[[Daytona USA]]''.
* [[Capcom vs. Whatever|Capcom's "VS" series]]:
* [[Capcom vs. Whatever|Capcom's "VS" series]]:
** The [[Marvel vs. Capcom]] games, (''[[X-Men vs. Street Fighter (Video Game)|X-Men vs. Street Fighter]]'', ''[[Marvel Super Heroes vs. Street Fighter (Video Game)|Marvel Super Heroes vs. Street Fighter]]'', ''[[Marvel vs. Capcom Clash of the Superheroes (Video Game)|Marvel vs. Capcom Clash of the Superheroes]]'', ''[[Marvel vs. Capcom 2 (Video Game)|Marvel vs. Capcom 2]]'' and now ''[[Marvel vs. Capcom 3]]'') pit the characters of the various game series produced by [[Capcom]] against the heroes and villains of the [[Marvel Universe]] in, naturally, a fighting tournament. Only the sketchiest rationale is drawn for this.
** The [[Marvel vs. Capcom]] games, (''[[X-Men vs. Street Fighter]]'', ''[[Marvel Super Heroes vs. Street Fighter]]'', ''[[Marvel vs. Capcom Clash of the Superheroes]]'', ''[[Marvel vs. Capcom 2]]'' and now ''[[Marvel vs. Capcom 3]]'') pit the characters of the various game series produced by [[Capcom]] against the heroes and villains of the [[Marvel Universe]] in, naturally, a fighting tournament. Only the sketchiest rationale is drawn for this.
** Following this is the [[SN Kvs Capcom]] series, (''[[Video Game/SNK Vs Capcom The Match Of The Millennium|SNK Vs Capcom The Match Of The Millennium]]'', ''[[Capcom vs. SNK Millennium Fight 2000 (Video Game)|Capcom vs. SNK Millennium Fight 2000]]'', ''[[Capcom vs. SNK 2 Mark of the Millennium (Video Game)|Capcom vs. SNK 2 Mark of the Millennium]]'' and ''[[SNK vs. Capcom SVC Chaos (Video Game)|SNK vs. Capcom SVC Chaos]]'') basically putting the characters of [[Capcom|both]] [[SNK|companies]]' [[Fighting Game]] series against each other. A spinoff series known as ''SNK vs. Capcom: Card Fighters'' is a TCG pulling characters from both companies' entire libraries.
** Following this is the [[SNK vs. Capcom]] series, (''[[Video Game/SNK Vs Capcom The Match Of The Millennium|SNK Vs Capcom The Match Of The Millennium]]'', ''[[Capcom vs. SNK Millennium Fight 2000]]'', ''[[Capcom vs. SNK 2 Mark of the Millennium]]'' and ''[[SNK vs. Capcom SVC Chaos]]'') basically putting the characters of [[Capcom|both]] [[SNK|companies]]' [[Fighting Game]] series against each other. A spinoff series known as ''SNK vs. Capcom: Card Fighters'' is a TCG pulling characters from both companies' entire libraries.
** And then there is ''[[Namco X Capcom (Video Game)|Namco X Capcom]]'', a action/strategy RPG featuring characters from [[Namco]] and [[Capcom]].
** And then there is ''[[Namco X Capcom]]'', a action/strategy RPG featuring characters from [[Namco]] and [[Capcom]].
** ''[[Street Fighter X Tekken (Video Game)|Street Fighter X Tekken]]'' and ''Tekken x Street Fighter'' however are actual fighting games featuring Namco (''[[Tekken]]'') and Capcom (''[[Street Fighter]]'') characters.
** ''[[Street Fighter X Tekken]]'' and ''Tekken x Street Fighter'' however are actual fighting games featuring Namco (''[[Tekken]]'') and Capcom (''[[Street Fighter]]'') characters.
** Only related through the VS. series via the appearance of ''one'' Capcom series rather than ''multiple'' but what the heck: ''[[Cross Edge (Video Game)|Cross Edge]]'' is a RPG with Compile Heart at the helm of development. Characters from ''[[Darkstalkers (Video Game)|Darkstalkers]]'', ''[[Ar Tonelico]]'', ''[[Disgaea]]'', ''Spectral Souls'', ''[[Atelier Series|Atelier Marie]]'' and ''[[Atelier Series|ManaKhemia]]'' show up in this one.
** Only related through the VS. series via the appearance of ''one'' Capcom series rather than ''multiple'' but what the heck: ''[[Cross Edge]]'' is a RPG with Compile Heart at the helm of development. Characters from ''[[Darkstalkers]]'', ''[[Ar tonelico]]'', ''[[Disgaea]]'', ''Spectral Souls'', ''[[Atelier (franchise)|Atelier Marie]]'' and ''[[Atelier (franchise)|ManaKhemia]]'' show up in this one.
** There's also ''[[Tatsunokovs Capcom (Video Game)|Tatsunokovs Capcom]]'', which returns to the gameplay of the Marvel series but instead pits the Capcom characters against the works of [[Tatsunoko Productions]] like ''[[Science Ninja Team Gatchaman (Anime)|Gatchaman]]'' and ''Casshern''. It is basically ''Marvel vs. Capcom'' using Japan's Marvel.
** There's also ''[[Tatsunoko vs. Capcom]]'', which returns to the gameplay of the Marvel series but instead pits the Capcom characters against the works of [[Tatsunoko Productions]] like ''[[Science Ninja Team Gatchaman|Gatchaman]]'' and ''Casshern''. It is basically ''Marvel vs. Capcom'' using Japan's Marvel.
** ''[[Project X Zone (Video Game)|Project X Zone]]'' is an upcoming [[Spiritual Successor]] to ''[[Namco X Capcom (Video Game)|Namco X Capcom]]'', only now adding [[Sega]] (and technically [[Bandai]] of [[Namco Bandai]], with ''[[Super Robot Wars Original Generation]]'', and ''[[.hack (Franchise)|.hack]]'' being Bandai's franchises before the merger with Namco) into the mix.
** ''[[Project X Zone]]'' is an upcoming [[Spiritual Successor]] to ''[[Namco X Capcom]]'', only now adding [[Sega]] (and technically [[Bandai]] of [[Namco Bandai]], with ''[[Super Robot Wars Original Generation]]'', and ''[[.hack]]'' being Bandai's franchises before the merger with Namco) into the mix.
* Even before ''Tatsunoko vs. Capcom'', there was a [[Fighting Game]] called ''[[Tatsunoko Fight]]'', which pitted four Tatsunoko superhero anime (and one original made-up anime) characters, along with their females/sidekicks and villains.
* Even before ''Tatsunoko vs. Capcom'', there was a [[Fighting Game]] called ''[[Tatsunoko Fight]]'', which pitted four Tatsunoko superhero anime (and one original made-up anime) characters, along with their females/sidekicks and villains.
* Capcom's own [[Mascot Fighter]]: ''[[Capcom Fighting Evolution (Video Game)|Capcom Fighting Evolution]]''. The only game where we were able to have a [[Street Fighter|Zangief vs. Alex]] fight, and which not only had the distinction of being the only Capcom-made<ref>''[[SNK vs. Capcom SVC Chaos (Video Game)|SNK vs. Capcom SVC Chaos]]'' doesn't count, it was made by [[SNK]]</ref> crossover not featuring [[Darkstalkers (Video Game)|Morrigan]], (Anakaris, Demitri, Felicia and Jedah, plus Pyron as one of the final bosses, were the [[Darkstalkers (Video Game)|Darkstalkers]] representants) but also the only game where we were able to fight as one (or two) of the [[Red Earth]] characters who aren't Tessa. (Leo, Hauzer, Hydron and Kenji were the representants)
* Capcom's own [[Mascot Fighter]]: ''[[Capcom Fighting Evolution]]''. The only game where we were able to have a [[Street Fighter|Zangief vs. Alex]] fight, and which not only had the distinction of being the only Capcom-made<ref>''[[SNK vs. Capcom SVC Chaos]]'' doesn't count, it was made by [[SNK]]</ref> crossover not featuring [[Darkstalkers|Morrigan]], (Anakaris, Demitri, Felicia and Jedah, plus Pyron as one of the final bosses, were the [[Darkstalkers]] representants) but also the only game where we were able to fight as one (or two) of the [[Red Earth]] characters who aren't Tessa. (Leo, Hauzer, Hydron and Kenji were the representants)
* In contrast, the ''[[Super Robot Wars]]'' series (almost certainly the originator of this trope in video game form) has magnificent, complex plots, and the individual games have touched upon nearly every [[Humongous Mecha]] series in existence. Particular of note is how they merge individual ''episodes'' to make missions, including having the famous "dancing" episode of ''[[Neon Genesis Evangelion]]'' set on [[Macross]] Island.
* In contrast, the ''[[Super Robot Wars]]'' series (almost certainly the originator of this trope in video game form) has magnificent, complex plots, and the individual games have touched upon nearly every [[Humongous Mecha]] series in existence. Particular of note is how they merge individual ''episodes'' to make missions, including having the famous "dancing" episode of ''[[Neon Genesis Evangelion]]'' set on [[Macross]] Island.
** Additionally, ''[[Super Robot Wars Original Generation]]'' is a Massively Multiplayer Crossover of various ''Super Robot Wars'' [[Original Generation|original characters]] (as each ''Super Robot Wars'' sub-series is set in its own universe)
** Additionally, ''[[Super Robot Wars Original Generation]]'' is a Massively Multiplayer Crossover of various ''Super Robot Wars'' [[Original Generation|original characters]] (as each ''Super Robot Wars'' sub-series is set in its own universe)
*** Furthermore, ''[[Super Robot Wars]] OG Saga: [[Endless Frontier]]'' is a crossover between ''[[Super Robot Wars Original Generation]]'' and ''[[Namco X Capcom (Video Game)|Namco X Capcom]]'' (minus the Capcom) - making it a crossover between a crossover between crossovers and-- oh dear...
*** Furthermore, ''[[Super Robot Wars]] OG Saga: [[Endless Frontier]]'' is a crossover between ''[[Super Robot Wars Original Generation]]'' and ''[[Namco X Capcom]]'' (minus the Capcom) - making it a crossover between a crossover between crossovers and—oh dear...
** And to top it all off, ''[[Another Centurys Episode]]'' is ''[[Super Robot Wars]]'' [[Mix and Match|using the system from]] ''[[Armored Core (Video Game)|Armored Core]]''.
** And to top it all off, ''[[Another Century's Episode]]'' is ''[[Super Robot Wars]]'' [[Mix and Match|using the system from]] ''[[Armored Core]]''.
* ''[[Chaos Wars]]'' uses a similar SRPG system to ''Super Robot Wars'', but instead has more typical JRPG heroes from Atlus, RED, Idea Factory, and Aruze. This doesn't sound all that impressive -- outside of Atlus and ''maybe'' Idea Factory those companies are virtually unknown in the States, until you realize this includes ''[[Shadow Hearts]]'' (Aruze), ''Growlanser'' (Atlus), ''Spectral Souls'' (Idea Factory), and ''[[Gungrave]]'' (RED). A sequel has been talked about, and there are hints that ''[[Shin Megami Tensei]]''/''[[Persona]]'' characters may make it in, and that [[Nippon Ichi]] might be invited to join the other 4 designers in the next series.
* ''[[Chaos Wars]]'' uses a similar SRPG system to ''Super Robot Wars'', but instead has more typical JRPG heroes from Atlus, RED, Idea Factory, and Aruze. This doesn't sound all that impressive—outside of Atlus and ''maybe'' Idea Factory those companies are virtually unknown in the States, until you realize this includes ''[[Shadow Hearts]]'' (Aruze), ''Growlanser'' (Atlus), ''Spectral Souls'' (Idea Factory), and ''[[Gungrave]]'' (RED). A sequel has been talked about, and there are hints that ''[[Shin Megami Tensei]]''/''[[Persona]]'' characters may make it in, and that [[Nippon Ichi]] might be invited to join the other 4 designers in the next series.
** And ditto ''[[Trinity Universe (Video Game)|Trinity Universe]]'', which will have two story modes -- one with [[Nippon Ichi]] ([[Disgaea]]) characters, and one with [[Gust]] ([[Atelier Series]]) characters. It apparently revolves around someone throwing trash into Laharl's back yard. Gust and NIS are making a habit of doing these crossover games -- NIS also has a habit of localizing all of Gusts' releases in the states, too.
** And ditto ''[[Trinity Universe (video game)|Trinity Universe]]'', which will have two story modes—one with [[Nippon Ichi]] ([[Disgaea]]) characters, and one with [[Gust]] ([[Atelier (franchise)|Atelier]]) characters. It apparently revolves around someone throwing trash into Laharl's back yard. Gust and NIS are making a habit of doing these crossover games—NIS also has a habit of localizing all of Gusts' releases in the states, too.
* Yet another pastiche of ''SRW'' would be ''[[Battle Moon Wars]]'' which merges the three major published [[Nasuverse]] canons together: ''[[Tsukihime]]'', ''[[Fate Stay Night (Visual Novel)|Fate Stay Night]]'', and ''[[Kara no Kyoukai]]''.
* Yet another pastiche of ''SRW'' would be ''[[Battle Moon Wars]]'' which merges the three major published [[Nasuverse]] canons together: ''[[Tsukihime]]'', ''[[Fate/stay night|Fate Stay Night]]'', and ''[[Kara no Kyoukai:]]''.
* ''[[Super Smash Bros]]'' has a number of first- and second-party Nintendo characters fighting each other - and the third iteration of the series, ''Super Smash Bros. Brawl'', has taken it a step further, including Solid Snake from Konami's ''[[Metal Gear]]'' games and Mario's longtime rival, Sega's [[Sonic the Hedgehog]].
* ''[[Super Smash Bros.]]'' has a number of first- and second-party Nintendo characters fighting each other - and the third iteration of the series, ''Super Smash Bros. Brawl'', has taken it a step further, including Solid Snake from Konami's ''[[Metal Gear]]'' games and Mario's longtime rival, Sega's [[Sonic the Hedgehog]].
** There are also various fanmade Smash Bros. clones, then most notable example being the ''[[Super Smash Flash]]'' series for its inclusion of more third-party characters and anime characters.
** There are also various fanmade Smash Bros. clones, then most notable example being the ''[[Super Smash Flash]]'' series for its inclusion of more third-party characters and anime characters.
* Square-Enix's ''[[Kingdom Hearts]]'' series merges nearly every movie in the [[Disney Animated Canon]] and some outside of it with the feel and characters of the ''[[Final Fantasy]]'' series (though, just like the ''Tsubasa'' example above, the Disney characters are alternate universe incarnations, as implicitly stated in the ''[[Tron]]'' world).
* Square-Enix's ''[[Kingdom Hearts]]'' series merges nearly every movie in the [[Disney Animated Canon]] and some outside of it with the feel and characters of the ''[[Final Fantasy]]'' series (though, just like the ''Tsubasa'' example above, the Disney characters are alternate universe incarnations, as implicitly stated in the ''[[Tron]]'' world).
* On the PSP is ''[[Dissidia Final Fantasy (Video Game)|Dissidia Final Fantasy]]'', where heroes and villains of various ''[[Final Fantasy]]'' games face off as part of the machinations of two opposing powers.
* On the PSP is ''[[Dissidia Final Fantasy]]'', where heroes and villains of various ''[[Final Fantasy]]'' games face off as part of the machinations of two opposing powers.
* ''Tales of the World'', Namco's set of [[Massive Multiplayer Crossover]] games for their ''[[Tales Series]]''. One bonus, though, is that the ''Narikiri Dungeon'' heroes' ability to dress as any ''[[Tales Series|Tales]]'' character and gain their abilities applies to bosses, too. Now add in the fact that theme music changes to whatever character or costume is in the lead of a party in battle, and you have a winning idea when a ''Tales'' fan can battle to Motoi Sakuraba's more popular themes, like Fighting of the Spirit or Decisive.
* ''Tales of the World'', Namco's set of Massive Multiplayer Crossover games for their ''[[Tales (series)]]''. One bonus, though, is that the ''Narikiri Dungeon'' heroes' ability to dress as any ''[[Tales (series)|Tales]]'' character and gain their abilities applies to bosses, too. Now add in the fact that theme music changes to whatever character or costume is in the lead of a party in battle, and you have a winning idea when a ''Tales'' fan can battle to Motoi Sakuraba's more popular themes, like Fighting of the Spirit or Decisive.
** A recent download introduces Taki and Mitsurugi from ''[[Soul Series|Soulcalibur]]'' for use as well.
** A recent download introduces Taki and Mitsurugi from ''[[Soul Series|Soulcalibur]]'' for use as well.
** ''Tales of VS'' has recently been announced. It's a [[Fighting Game]] that we have been told is going to have a total of 35 characters from 13 different ''[[Tales Series|Tales]]'' games. So far only 8 have been announced. They are: Stahn Aileron and Mighty Kongman from ''[[Tales of Destiny (Video Game)|Tales of Destiny]]'', Kratos Aurion from ''[[Tales of Symphonia (Video Game)|Tales of Symphonia]]'', Richter Abend from ''[[Tales of Symphonia Dawn of the New World (Video Game)|Tales of Symphonia Dawn of the New World]]'', Luke fon Fabre and Anise Tatlin from ''[[Tales of the Abyss (Video Game)|Tales of the Abyss]]'', Shing Meteoryte from ''[[Tales of Hearts (Video Game)|Tales of Hearts]]'', and Yuri Lowell from ''[[Tales of Vesperia (Video Game)|Tales of Vesperia]]''.
** ''Tales of VS'' has recently been announced. It's a [[Fighting Game]] that we have been told is going to have a total of 35 characters from 13 different ''[[Tales (series)|Tales]]'' games. So far only 8 have been announced. They are: Stahn Aileron and Mighty Kongman from ''[[Tales of Destiny]]'', Kratos Aurion from ''[[Tales of Symphonia]]'', Richter Abend from ''[[Tales of Symphonia: Dawn of the New World]]'', Luke fon Fabre and Anise Tatlin from ''[[Tales of the Abyss]]'', Shing Meteoryte from ''[[Tales of Hearts]]'', and Yuri Lowell from ''[[Tales of Vesperia]]''.
** ''[[Tales of Hearts (Video Game)|Tales of Hearts]]'' itself is a borderline example. The cameo summons are somewhere between the trope and a very prominent [[Shout Out]].
** ''[[Tales of Hearts]]'' itself is a borderline example. The cameo summons are somewhere between the trope and a very prominent [[Shout-Out]].
* As noted above, ''[[Astro Boy]]: Omega Factor'' for the GBA contains characters from many of Osamu Tezuka's works. You gain levels by meeting new characters.
* As noted above, ''[[Astro Boy]]: Omega Factor'' for the GBA contains characters from many of Osamu Tezuka's works. You gain levels by meeting new characters.
* ''[[Fusion Fall|Cartoon Network: Fusion Fall]]'' is a [[Cartoon Network]] MMORPG that combines their various original series (including ''Codename [[Kids Next Door]]'', ''[[Ed, Edd n Eddy]]'', ''[[The Powerpuff Girls (Animation)|The Powerpuff Girls]]'', and ''[[Ben 10 (Animation)|Ben 10]]'', among others).
* ''[[Fusion Fall|Cartoon Network: Fusion Fall]]'' is a [[Cartoon Network]] MMORPG that combines their various original series (including ''Codename [[Kids Next Door]]'', ''[[Ed, Edd 'n' Eddy]]'', ''[[The Powerpuff Girls]]'', and ''[[Ben 10]]'', among others).
* ''[[Another Centurys Episode|A.C.E.: Another Century's Episode]]'' is, much like ''[[Super Robot Wars]]'', a massive crossover between a number of [[Humongous Mecha]] series. It's an action game rather than a turn-based strategy game, though.
* ''[[Another Century's Episode|A.C.E.: Another Century's Episode]]'' is, much like ''[[Super Robot Wars]]'', a massive crossover between a number of [[Humongous Mecha]] series. It's an action game rather than a turn-based strategy game, though.
* ''[[Mortal Kombat]] vs. [[DC Universe]]'', where blood-thirsty kombatants and superheroes beat up each other due to a [[Hate Plague]] spread by an ugly fusion of two [[Big Bad|Big Bads]].
* ''[[Mortal Kombat]] vs. [[DC Universe]]'', where blood-thirsty kombatants and superheroes beat up each other due to a [[Hate Plague]] spread by an ugly fusion of two [[Big Bad]]s.
* THQ's ''[[Nicktoons Unite]]'' series, merging various [[Nickelodeon|Nicktoons]] with ''[[Spongebob SquarePants]]'', ''[[Danny Phantom]]'' and ''[[The Adventures of Jimmy Neutron]]'' consistenly featuring as well as reoccuring appearances of varying frequency from ''The [[Fairly Oddparents]]'', ''[[Tak and The Power of Juju]]'' and ''[[Invader Zim]]'' (And that's long after [[Executive Meddling|the last one has]] [[Screwed By the Network|been killed off]], mind you). Oh, and I kid you not, [[The Ren and Stimpy Show|Stimpy]] and [[Rocko's Modern Life|Rocko]] in the console version of ''Nicktoons: Attack of the Toybots'', and [[Avatar: The Last Airbender|Aang]] in ''Nicktoons Nitro''. it has been sorta-followed by ''[[Nicktoons MLB]]''.
* THQ's ''[[Nicktoons Unite!]]'' series, merging various [[Nickelodeon|Nicktoons]] with ''[[SpongeBob SquarePants]]'', ''[[Danny Phantom]]'' and ''[[The Adventures of Jimmy Neutron]]'' consistenly featuring as well as reoccuring appearances of varying frequency from ''The [[Fairly Oddparents]]'', ''[[Tak and the Power of Juju]]'' and ''[[Invader Zim]]'' (And that's long after [[Executive Meddling|the last one has]] [[Screwed by the Network|been killed off]], mind you). Oh, and I kid you not, [[The Ren and Stimpy Show|Stimpy]] and [[Rocko's Modern Life|Rocko]] in the console version of ''Nicktoons: Attack of the Toybots'', and [[Avatar: The Last Airbender|Aang]] in ''Nicktoons Nitro''. it has been sorta-followed by ''[[Nicktoons MLB]]''.
* ''[[Gundam vs. Series|Mobile Suit Gundam: Gundam vs. Gundam]]'' is an arcade [[Fighting Game]] with a [[Crisis Crossover]] [[Excuse Plot]] that throws all thirty years of the ''[[Gundam]]'' franchise together so characters like [[Mobile Suit Gundam|Amuro]], [[G Gundam|Domon]], [[Gundam Wing|Heero]], [[Gundam Seed|Kira]], and [[Gundam 00|Setsuna]] can beat the stuffing out of each other.
* ''[[Gundam vs. Series|Mobile Suit Gundam: Gundam vs. Gundam]]'' is an arcade [[Fighting Game]] with a [[Crisis Crossover]] [[Excuse Plot]] that throws all thirty years of the ''[[Gundam]]'' franchise together so characters like [[Mobile Suit Gundam|Amuro]], [[G Gundam|Domon]], [[Gundam Wing|Heero]], [[Gundam Seed|Kira]], and [[Mobile Suit Gundam 00|Setsuna]] can beat the stuffing out of each other.
** Similarly, there is ''[[Dynasty Warriors| Gundam]]'' that has several stories focusing on different pilots teaming up into two forces because of this. Eventually, you can even have different pilots using different mecha.
** Similarly, there is ''[[Gundam|Dynasty Warriors]]'' that has several stories focusing on different pilots teaming up into two forces because of this. Eventually, you can even have different pilots using different mecha.
* ''Dengeki Gakuen RPG: Cross of Venus'' is a [[Nintendo DS]] [[Action RPG]] that throws ''[[Shakugan no Shana]]'', ''[[Iriya no Sora UFO no Natsu]]'', ''[[Kino's Journey]]'', ''[[To Aru Majutsu no Index]]'', ''[[Nogizaka Haruka no Himitsu]]'', ''[[Bludgeoning Angel Dokurochan (Light Novel)|Bludgeoning Angel Dokurochan]]'', ''[[Toradora (Light Novel)|Toradora]]'' and ''[[Asura Cryin]]''' (with cameos from ''[[Spice and Wolf]]'', ''[[Baccano (Light Novel)|Baccano]]!'', ''[[Inukami]]!'' and the [[Boogiepop Series]]) together into a [[Crisis Crossover]].
* ''Dengeki Gakuen RPG: Cross of Venus'' is a [[Nintendo DS]] [[Action RPG]] that throws ''[[Shakugan no Shana]]'', ''[[Iriya no Sora UFO no Natsu]]'', ''[[Kino's Journey]]'', ''[[A Certain Magical Index]]'', ''[[Nogizaka Haruka no Himitsu]]'', ''[[Bludgeoning Angel Dokuro-chan]]'', ''[[Toradora!]]'' and ''[[Asura Cryin]]''' (with cameos from ''[[Spice and Wolf]]'', ''[[Baccano!]]!'', ''[[Inukami!]]!'' and the [[Boogiepop Series]]) together into a [[Crisis Crossover]].
* ''[[Dream Mix TV World Fighters]]'' is a fairly bizarre crossover [[Fighting Game]] featuring characters from [[Konami]], [[Hudson Soft]], and [[Takara]]. It's a shame it wasn't very good; where else could you pit [[Bomberman (Video Game)|Bomberman]], [[Castlevania|Simon Belmont]], [[Metal Gear|Solid Snake]] and [[Transformers|Optimus Prime]] against each other?
* ''[[Dream Mix TV World Fighters]]'' is a fairly bizarre crossover [[Fighting Game]] featuring characters from [[Konami]], [[Hudson Soft]], and [[Takara]]. It's a shame it wasn't very good; where else could you pit [[Bomberman]], [[Castlevania|Simon Belmont]], [[Metal Gear|Solid Snake]] and [[Transformers|Optimus Prime]] against each other?
* ''[[Magical Battle Arena]]'' is a 3D flying [[Fighting Game]] that pits the female mages and [[Magical Girl|Magical Girls]] of ''[[Magical Girl Lyrical Nanoha]]'', ''[[Cardcaptor Sakura (Manga)|Cardcaptor Sakura]]'', ''[[Slayers]]'', and ''[[Mahoujin Guru Guru]]'' against one another, with more series likely to be included in future [[Expansion Pack|Expansion Packs]].
* ''[[Magical Battle Arena]]'' is a 3D flying [[Fighting Game]] that pits the female mages and [[Magical Girl]]s of ''[[Magical Girl Lyrical Nanoha]]'', ''[[Cardcaptor Sakura]]'', ''[[Slayers]]'', and ''[[Mahoujin Guru Guru]]'' against one another, with more series likely to be included in future [[Expansion Pack]]s.
* ''[[Jump Super Stars]]'' has characters from dozens of ''Weekly Shonen Jump'' series in a ''[[Super Smash Bros]]''-style battle royale.
* ''[[Jump Super Stars]]'' has characters from dozens of ''Weekly Shonen Jump'' series in a ''[[Super Smash Bros.]]''-style battle royale.
** Similarly, ''Battle Stadium D.O.N.'' is the same, but specifically has characters from ''[[Dragonball]]'', ''[[One Piece]]'', and ''[[Naruto]]'' (hence the D.O.N.).
** Similarly, ''Battle Stadium D.O.N.'' is the same, but specifically has characters from ''[[Dragon Ball]]'', ''[[One Piece]]'', and ''[[Naruto]]'' (hence the D.O.N.).
* Speaking of which, Shounen Sunday and Shounen Magazine are looking to take a bite out of ''Jump Super Stars'' together with ''[[Sunday VS Magazine Shuuketsu Choujou Daikessen (Video Game)|Sunday VS Magazine Shuuketsu Choujou Daikessen]]'' (Also known as ''Sunday vs. Magazine'') on the PSP.
* Speaking of which, Shounen Sunday and Shounen Magazine are looking to take a bite out of ''Jump Super Stars'' together with ''[[Sunday VS Magazine Shuuketsu Choujou Daikessen]]'' (Also known as ''Sunday vs. Magazine'') on the PSP.
* ''[[Quake]] III'' (and by extension, ''[http://www.quakelive.com Quake Live]'') included the ''[[Doom]]'' guy, the ''Quake'' marine, the ''Quake II'' marine and the guy from ''[[Wolfenstein 3D (Video Game)|Wolfenstein 3D]]'' (named Sarge here) among other characters as playable characters. Of course, they were all of the [[Silent Protagonist]] variety to begin with, so this didn't make a huge difference.
* ''[[Quake]] III'' (and by extension, ''[http://www.quakelive.com Quake Live]'') included the ''[[Doom]]'' guy, the ''Quake'' marine, the ''Quake II'' marine and the guy from ''[[Wolfenstein 3D]]'' (named Sarge here) among other characters as playable characters. Of course, they were all of the [[Silent Protagonist]] variety to begin with, so this didn't make a huge difference.
** The mod ''[http://www.wireheadstudios.org/generations/ Generations Arena]'' takes the above concept and runs with it, extending the crossover to the ''gameplay'' via five classes, each adapting the gameplay of said five games to the ''Quake III'' engine, right down to the finest details. ''Doom'''s fast-paced battles and BFG against ''Quake'''s flexible air control and powerful rocket launcher? You got it.
** The mod ''[https://web.archive.org/web/20131207173154/http://wireheadstudios.org/generations/ Generations Arena]'' takes the above concept and runs with it, extending the crossover to the ''gameplay'' via five classes, each adapting the gameplay of said five games to the ''Quake III'' engine, right down to the finest details. ''Doom''{{'}}s fast-paced battles and BFG against ''Quake''{{'}}s flexible air control and powerful rocket launcher? You got it.
** And that's not even including custom skins, with which the crossovers skyrocket through the roof.
** And that's not even including custom skins, with which the crossovers skyrocket through the roof.
* [[MUGEN]] is a customizable 2D fighting engine that permits end users to homebrew reproductions of any other character in the entire genre, and create unique ones. Fighters already exist for every "vs" title released and almost every fighting games, and can be crossed over in unique ways.
* [[MUGEN]] is a customizable 2D fighting engine that permits end users to homebrew reproductions of any other character in the entire genre, and create unique ones. Fighters already exist for every "vs" title released and almost every fighting games, and can be crossed over in unique ways.
* [[Nippon Ichi]] has recently released a new one in Japan with a release coming in summer 2010 to the US, [[Trinity Universe (Video Game)|Trinity Universe]]. It's made in conjunction with Gust and Idea Factory.
* [[Nippon Ichi]] has recently released a new one in Japan with a release coming in summer 2010 to the US, [[Trinity Universe (video game)|Trinity Universe]]. It's made in conjunction with Gust and Idea Factory.
** Also, [[Disgaea 3]] has characters from almost all [[Nippon Ichi]] Series. Including the entire cast of the earlier Disgaea games. [[Makai Kingdom]], [[Soul Nomad]], [[Phantom Brave]] and [[La Pucelle]]
** Also, [[Disgaea 3: Absence of Justice]] has characters from almost all [[Nippon Ichi]] Series. Including the entire cast of the earlier Disgaea games. [[Makai Kingdom]], [[Soul Nomad]], [[Phantom Brave]] and [[La Pucelle]]
* [http://forums.civfanatics.com/showthread.php?t=271473 This] [[Game Mod]] for Civilization IV has an [[All Myths Are True|All Fiction is True]] premise, allowing for a player to fight wars and build empires as several famous fictional leaders ranging from [[The Iliad (Literature)|Agamemnon]] to Macbeth to Rama, Dracula, [[The Marx Brothers|Rufus T. Firefly]], and [[The West Wing|Jed Bartlet]]. Wonders of the World include [[Atlas Shrugged|Galt's Gulch]], [[Harry Potter|Hogwarts]], [[King Arthur|Camelot]], and [[Jurassic Park]], and adds Hero Units like [[Don Quixote (Literature)|Don Quixote]], [[Journey to The West|Sun Wukong]] and [[The Time Machine|The Time Traveller]].
* [http://forums.civfanatics.com/showthread.php?t=271473 This] [[Game Mod]] for ''[[Civilization IV]]'' has an [[All Myths Are True|All Fiction is True]] premise, allowing for a player to fight wars and build empires as several famous fictional leaders ranging from [[The Iliad|Agamemnon]] to Macbeth to Rama, Dracula, [[The Marx Brothers|Rufus T. Firefly]], and [[The West Wing|Jed Bartlet]]. Wonders of the World include [[Atlas Shrugged|Galt's Gulch]], [[Harry Potter|Hogwarts]], [[King Arthur|Camelot]], and [[Jurassic Park]], and adds Hero Units like [[Don Quixote]], [[Journey to the West|Sun Wukong]] and [[The Time Machine|The Time Traveller]].
* The [[Square Enix]] board game series ''Itadaki Street'' has character crossovers of [[Dragon Quest]] with either [[Final Fantasy]] or [[Super Mario]] depending on the game. Though traditionally [[No Export for You]], a Western release has been announced for the [[Wii]] as ''[[Fortune Street (Video Game)|Fortune Street]]''.
* The [[Square Enix]] board game series ''Itadaki Street'' has character crossovers of [[Dragon Quest]] with either [[Final Fantasy]] or [[Super Mario]] depending on the game. Though traditionally [[No Export for You]], a Western release has been announced for the [[Wii]] as ''[[Itadaki Street|Fortune Street]]''.
* [http://www.cinemassacre.com/2010/05/03/fan-games-cameo-founder-of-ljn-passes-away/ Mentioned] by [[The Angry Video Game Nerd (Web Video)|the Nerd himself]] (well, his actor), ''[[Super Mario Bros Crossover]].''
* [https://web.archive.org/web/20130920230509/http://cinemassacre.com/2010/05/03/fan-games-cameo-founder-of-ljn-passes-away/ Mentioned] by [[The Angry Video Game Nerd|the Nerd himself]] (well, his actor), ''[[Super Mario Bros Crossover]].''
* The fan-made ''[[Mushroom Kingdom Fusion]]'' combines a wide variety of classic and contemporary video game characters and universes together into one game. For starters, playable characters include [[Super Mario Bros|Mario and Luigi, Wario]], [[Sonic the Hedgehog|Sonic and Tails]], [[The Legend of Zelda (Franchise)|Link]], [[Ghosts N Goblins (Video Game)|Arthur]], and [[Mega Man (Video Game)|Roll]].
* The fan-made ''[[Mushroom Kingdom Fusion]]'' combines a wide variety of classic and contemporary video game characters and universes together into one game. For starters, playable characters include [[Super Mario Bros.|Mario and Luigi, Wario]], [[Sonic the Hedgehog|Sonic and Tails]], [[The Legend of Zelda|Link]], [[Ghosts 'n Goblins|Arthur]], and [[Mega Man (video game)|Roll]].
* ''[[Indie Brawl]]'', a [[Fighting Game]] à la [[Super Smash Bros]], but with characters from the Indie Gaming culture.
* ''[[Indie Brawl]]'', a [[Fighting Game]] à la [[Super Smash Bros.]], but with characters from the Indie Gaming culture.
* ''[[Poker Night At the Inventory (Video Game)|Poker Night At the Inventory]]'', a [[Poker]] game involving characters from ''[[Penny Arcade]]'', ''[[Sam and Max Freelance Police (Video Game)|Sam and Max Freelance Police]]'', ''[[Team Fortress 2 (Video Game)|Team Fortress 2]]'' and ''[[Homestar Runner (Web Animation)|Homestar Runner]]''.
* ''[[Poker Night At the Inventory]]'', a [[Poker]] game involving characters from ''[[Penny Arcade]]'', ''[[The Adventures of Sam & Max: Freelance Police|Sam and Max Freelance Police]]'', ''[[Team Fortress 2]]'' and ''[[Homestar Runner]]''.
** In theory, expansions or further installments could potentially include characters from just about any video game you could name (in practice, any character owned by a company too chicken to go in on a project solely on the basis that it's a cool idea can be struck from the list).
** In theory, expansions or further installments could potentially include characters from just about any video game you could name (in practice, any character owned by a company too chicken to go in on a project solely on the basis that it's a cool idea can be struck from the list).
* Any [[Wii]] game that uses Miis as playable characters or NPCs can become this if you make enough of them.
* Any [[Wii]] game that uses Miis as playable characters or NPCs can become this if you make enough of them.
* ''[[Playstation Move Heroes]]'', featuring [[Jak and Daxter]], [[Ratchet and Clank]], and [[Sly Cooper]] ([[My Friends and Zoidberg|and Bentley]]).
* ''[[Playstation Move Heroes]]'', featuring [[Jak and Daxter]], [[Ratchet and Clank]], and [[Sly Cooper]] ([[My Friends and Zoidberg|and Bentley]]).
** ''[[Play Station All Stars Battle Royale (Video Game)|Play Station All Stars Battle Royale]]'' takes this concept, bolts on a whole lot more franchises, and storms ''Super Smash Bros.'''s territory with a [[Mascot Fighter]].
** ''[[Play Station All Stars Battle Royale]]'' takes this concept, bolts on a whole lot more franchises, and storms ''Super Smash Bros.'''s territory with a [[Mascot Fighter]].
* ''[[Gwange Dash|GwangeDash]]'', an indie [[Bullet Hell|shmup]] featuring ships, enemies and bosses from a lot of different shooters, including ''[[Do Don Pachi|DoDonPachi]]'', ''[[Guwange]]'', ''[[Ketsui]]'', ''[[Ikaruga]]'', ''Twin Cobra'', ''[[Gradius]]'', ''[[Battle Garegga]]'', ''[[Radiant Silvergun]]'' and countless more.
* ''[[Gwange Dash]]'', an indie [[Bullet Hell|shmup]] featuring ships, enemies and bosses from a lot of different shooters, including ''[[Do Don Pachi|DoDonPachi]]'', ''[[Guwange]]'', ''[[Ketsui]]'', ''[[Ikaruga]]'', ''Twin Cobra'', ''[[Gradius]]'', ''[[Battle Garegga]]'', ''[[Radiant Silvergun]]'' and countless more.
* The ''Macross Frontier'' PSP game series allows you to play all [[Macross]] universes. The recent title, ''Macross Triangle Frontier'', covers ''[[Macross Zero]]'', ''[[Macross]]'' (as well as '' Do You Remember Love''), ''[[Macross Plus]]'', ''[[Macross 7]]'', ''Macross Dynamite 7'', ''[[Macross Frontier]]'' (as well as ''Macross Frontier: The False Songstress'') and ''Macross 2''.
* The ''Macross Frontier'' PSP game series allows you to play all [[Macross]] universes. The recent title, ''Macross Triangle Frontier'', covers ''[[Macross Zero]]'', ''[[Macross]]'' (as well as '' Do You Remember Love''), ''[[Macross Plus]]'', ''[[Macross 7]]'', ''Macross Dynamite 7'', ''[[Macross Frontier]]'' (as well as ''Macross Frontier: The False Songstress'') and ''Macross 2''.
* In a more literal example, ''[[Minecraft]]'' allows anyone to make their own character skins, which leads to 20+ characters all working together to build a house/civilisation and mine for diamonds.
* In a more literal example, ''[[Minecraft]]'' allows anyone to make their own character skins, which leads to 20+ characters all working together to build a house/civilisation and mine for diamonds.
* ''[[Cartoon Network Punch Time Explosion]]'' is a Smash Bros. clone with [[Exactly What It Says On the Tin|Cartoon Network]] characters. (BTW, it's not a clone just because it's a crossover either. It literally has the same gameplay, right down to tilt/smash attacks, Final Smashes, assist characters, and the percantage point system.)
* ''[[Cartoon Network: Punch Time Explosion]]'' is a Smash Bros. clone with [[Exactly What It Says on the Tin|Cartoon Network]] characters. (BTW, it's not a clone just because it's a crossover either. It literally has the same gameplay, right down to tilt/smash attacks, Final Smashes, assist characters, and the percantage point system.)
* ''[[Heroes Phantasia]]'' is an upcoming RPG from [[Namco Bandai|Banpresto]], featuring ''[[Keroro Gunsou]]'', ''[[Slayers]]'', ''[[Darker Than Black]]'', ''[[Mai Hi ME]]'', ''[[Sorcerer Stabber Orphen]]'', ''[[Read or Die (Anime)|Read or Die]]'', ''[[Rune Soldier Louie]]'', ''[[S-Cry-ed]]'', and ''[[Blood Plus|Blood +]]''.
* ''[[Heroes Phantasia]]'' is an upcoming RPG from [[Namco Bandai|Banpresto]], featuring ''[[Keroro Gunsou]]'', ''[[Slayers]]'', ''[[Darker than Black]]'', ''[[My-HiME]]'', ''[[Sorcerer Stabber Orphen]]'', ''[[Read or Die]]'', ''[[Rune Soldier Louie]]'', ''[[S-Cry-ed]]'', and ''[[Blood+|Blood +]]''.
* [[Konami]]'s [[MSX|MSX2]] Mahjong game ''Hai no Majutsushi'' featured eight mascots from various other Konami games: [[Maze of Galious|Popolon, Aphrodite]], [[Antarctic Adventure|Pentarou]], [[Ganbare Goemon|Goemon]], [[Gradius|Dr. Venom]], a [[Snatcher]], a [[Eenie Meenie Miny Moai|moai]], and a perverted version of [[Castlevania|Simon Belmont]].
* [[Konami]]'s [[MSX|MSX2]] Mahjong game ''Hai no Majutsushi'' featured eight mascots from various other Konami games: [[Maze of Galious|Popolon, Aphrodite]], [[Antarctic Adventure|Pentarou]], [[Ganbare Goemon|Goemon]], [[Gradius|Dr. Venom]], a [[Snatcher]], a [[Eenie Meenie Miny Moai|moai]], and a perverted version of [[Castlevania|Simon Belmont]].
* NES pirate cartridge ''Kart Fighter'' drops the characters from ''[[Super Mario Kart (Video Game)|Super Mario Kart]]'' into a fighting game, while ''World Heroes 2'' (not to be confused with the actual ''[[World Heroes (Video Game)|World Heroes]]'' games) includes [[Street Fighter|Ryu, Chun Li, M. Bison]], [[Final Fight|Haggar]], [[Fatal Fury|Andy Bogard, Lawrence Blood, Mai Shiranui]], [[Super Mario Bros|Mario, King Koopa]], [[Sonic the Hedgehog]], [[Teenage Mutant Ninja Turtles|Leonardo]], and [[Dragonball Z|Goku]].
* NES pirate cartridge ''Kart Fighter'' drops the characters from ''[[Super Mario Kart]]'' into a fighting game, while ''World Heroes 2'' (not to be confused with the actual ''[[World Heroes]]'' games) includes [[Street Fighter|Ryu, Chun Li, M. Bison]], [[Final Fight|Haggar]], [[Fatal Fury|Andy Bogard, Lawrence Blood, Mai Shiranui]], [[Super Mario Bros.|Mario, King Koopa]], [[Sonic the Hedgehog]], [[Teenage Mutant Ninja Turtles|Leonardo]], and [[Dragonball Z|Goku]].
* The ''[[Warriors Orochi]]'' games has the characters of both [[Dynasty Warriors]] and [[Samurai Warriors]] dropped into the same setting due to the [[Big Bad]] messing around with time to seek out powerful warriors to challenge him. Along for the ride are some mythical beings exclusive to the series and by the third game, [[Dead or Alive|Ayane]], [[Ninja Gaiden|Ryu Hayabusa]], Achilles of [[Warriors Legends of Troy]], Nemea of [[Trinity Souls of Zill Oll]] and Jeanne d'Arc of Bladestorm.
* The ''[[Warriors Orochi]]'' games has the characters of both [[Dynasty Warriors]] and [[Samurai Warriors]] dropped into the same setting due to the [[Big Bad]] messing around with time to seek out powerful warriors to challenge him. Along for the ride are some mythical beings exclusive to the series and by the third game, [[Dead or Alive|Ayane]], [[Ninja Gaiden|Ryu Hayabusa]], Achilles of [[Warriors: Legends of Troy]], Nemea of [[Trinity Souls of Zill Oll]] and Jeanne d'Arc of Bladestorm.


== [[Web Comics]] ==

* There have been at least two webcomic Massive Multiplayer Crossovers: ''[http://www.dragoneers.com/crossovers/index.php?comic=Greatescape The Framed!!! Great Escape]'' and the recently{{when}} ended ''[[Crossover Wars]]''
== Theater ==
* Though it never crossed over with both at the same time, ''[[Walkyverse|It's Walky!]]!'' had crossovers with both ''[[Melonpool]]'' and ''[[Fans]]!'' that established both as part of its universe (or multiverse in the latter case) and which ended up having a lasting impact on its storyline.
* ''[[Seussical]]'' has characters from several of Dr. Seuss' books
* ''[[Kevin and Kell]]'' and ''[[General Protection Fault]]'' had an arc where two GPF characters wandered into K&K's Domain world. The artists managed to work the events into ''both'' their storylines that were running at the time, and apparently drew a strip each day—both had two-strip days where the storyline advanced.


== Webcomics ==
* There have been at least two webcomic Massive Multiplayer Crossovers: ''[http://www.dragoneers.com/crossovers/index.php?comic=Greatescape The Framed!!! Great Escape]'' and the recently ended ''[[Crossover Wars]]''
* Though it never crossed over with both at the same time, ''[[Its Walky]]!'' had crossovers with both ''[[Melonpool]]'' and ''[[Fans]]!'' that established both as part of its universe (or multiverse in the latter case) and which ended up having a lasting impact on its storyline.
* ''[[Kevin and Kell]]'' and ''[[General Protection Fault]]'' had an arc where two GPF characters wandered into K&K's Domain world. The artists managed to work the events into ''both'' their storylines that were running at the time, and apparently drew a strip each day--both had two-strip days where the storyline advanced.
* ''Starslip Crisis: Alterverse War'' is a mashup of a large number of science fiction webcomics, and had just started as of October 2007.
* ''Starslip Crisis: Alterverse War'' is a mashup of a large number of science fiction webcomics, and had just started as of October 2007.
* The webcomics ''[[Queen of Wands (Webcomic)|Queen of Wands]]'' and ''[[Something Positive]]'' had [http://www.queenofwands.net/d/20040510.html a couple] of [http://www.somethingpositive.net/sp05102004.shtml crossover stories]. Later, after QOW ended its run, Kestrel [[Canon Immigrant|showed up as a semi-regular]] on S*P.
* The webcomics ''[[Queen of Wands]]'' and ''[[Something*Positive]]'' had [http://www.queenofwands.net/d/20040510.html a couple] of [https://web.archive.org/web/20140109081020/http://somethingpositive.net/sp05102004.shtml crossover stories]. Later, after QOW ended its run, Kestrel [[Canon Immigrant|showed up as a semi-regular]] on S*P.
** Choo-Choo Bear hired the Pet Professional from the webcomic of the same name to kill his homicidal cousin Twitchy-Hug.
** Choo-Choo Bear hired the Pet Professional from the webcomic of the same name to kill his homicidal cousin Twitchy-Hug.
** And recently Davan from S*P has been seen texting with Candy from [http://www.daniellecorsetto.com/gws.html ''Girls with Slingshots''] after running into her at the wedding of Jameson and Maureen.
** And recently Davan from S*P has been seen texting with Candy from [https://web.archive.org/web/20131020060159/http://www.daniellecorsetto.com/gws.html ''Girls with Slingshots''] after running into her at the wedding of Jameson and Maureen.
** Choo-Choo Bear later had kittens with Sprinkles of ''Girls with Slingshots'', one of whom Davan gave to Roz of ''[[Walkyverse|Shortpacked]]!'', and another is by Hazel to her cousin Robyn from [[All New Issues]].
** Choo-Choo Bear later had kittens with Sprinkles of ''Girls with Slingshots'', one of whom Davan gave to Roz of ''[[Walkyverse|Shortpacked]]!'', and another is by Hazel to her cousin Robyn from [[All New Issues]].
*** Even better, none of those strips have been shy about crossovers of their own. QOW drags in [[Punch and Pie]], which stars its [[Breakout Character]] Angela; ''It's Walky'' pulls in [[Fans]] and [[Avalon (Webcomic)|Avalon]].
*** Even better, none of those strips have been shy about crossovers of their own. QOW drags in [[Punch and Pie]], which stars its [[Breakout Character]] Angela; ''It's Walky'' pulls in [[Fans]] and [[Avalon (webcomic)|Avalon]].
* ''[[Questionable Content]]'' has crossed over with ''Diesel Sweeties'', which has itself crossed over with ''[[Scary Go Round]]''. ''[[Questionable Content]]'' has also crossed over with ''Applegeeks'', which, having crossed over with ''[[Ctrl Alt Del]]'', would turn the whole group into one quasi-incestuous ball of webcomics. I'm reasonably certain that [[Pv P]] has been referenced in at least one of these, probably ''Diesel Sweeties'', and since the former has crossed over with ''[[Penny Arcade]]'' more than once, it's completely cross-eyed insane over there.
* ''[[Questionable Content]]'' has crossed over with ''Diesel Sweeties'', which has itself crossed over with ''[[Scary Go Round]]''. ''[[Questionable Content]]'' has also crossed over with ''Applegeeks'', which, having crossed over with ''[[Ctrl+Alt+Del]]'', would turn the whole group into one quasi-incestuous ball of webcomics. I'm reasonably certain that [[PvP]] has been referenced in at least one of these, probably ''Diesel Sweeties'', and since the former has crossed over with ''[[Penny Arcade]]'' more than once, it's completely cross-eyed insane over there.
** And the Author of ''[[Ctrl Alt Del]]'' exists as a person in the ''[[Penny Arcade]]'' universe, so that means, if you follow the little red thread of universal strings, that he exists in the same plane of existence as his characters..
** And the Author of ''[[Ctrl+Alt+Del]]'' exists as a person in the ''[[Penny Arcade]]'' universe, so that means, if you follow the little red thread of universal strings, that he exists in the same plane of existence as his characters..
** Don't forget that ''Applegeeks'' had a major crossover (well, on its end) with ''[[Megatokyo]]'' at one point. Which chains the whole thing to a specific date, making things even crazier.
** Don't forget that ''Applegeeks'' had a major crossover (well, on its end) with ''[[Megatokyo]]'' at one point. Which chains the whole thing to a specific date, making things even crazier.
** It gets better. Questionable Content is now having background extras as characters from other comics like [[Girls With Slingshots]], [[Octopus Pie]], [[Anders Loves Maria]] and [[Overcompensating]]. Since [[Overcompensating]] features the author and most people known in the webcomic industry, it means all these characters now exist in the same universe as their creators.
** It gets better. Questionable Content is now having background extras as characters from other comics like [[Girls with Slingshots]], [[Octopus Pie]], [[Anders Loves Maria]] and [[Overcompensating]]. Since [[Overcompensating]] features the author and most people known in the webcomic industry, it means all these characters now exist in the same universe as their creators.
** The cast of Shortpacked has visited the Coffee of Doom coffee house from QC on occasion, including once when both artists did a take on the [http://www.shortpacked.com/2009/comic/book-10/03-the-comedy-laugh/coffeehouse/ same] [http://www.questionablecontent.net/view.php?comic=1550 scene]. Combine that with the S*P [[Intercontinuity Crossover]] Nexus mentioned above, along with all ''their'' respective crossovers, and we have a massive webcomic universe that could give Marvel a run for its money.
** The cast of Shortpacked has visited the Coffee of Doom coffee house from QC on occasion, including once when both artists did a take on the [http://www.shortpacked.com/2009/comic/book-10/03-the-comedy-laugh/coffeehouse/ same] [http://www.questionablecontent.net/view.php?comic=1550 scene]. Combine that with the S*P [[Intercontinuity Crossover]] Nexus mentioned above, along with all ''their'' respective crossovers, and we have a massive webcomic universe that could give Marvel a run for its money.
* ''[[Sluggy Freelance]]'' hosted one of these during the [[Filler Strips|Filler Arc]] "[http://www.sluggy.com/daily.php?date=000327 Sluggy Freelance: Where Are You?]" When all of ''Sluggy's'' [[Animated Actors|actors]] are kidnapped (a.k.a. Pete Abrams decides to take some time off) characters from several other webcomics are hired to fill in for them and/or find the kidnappers.
* ''[[Sluggy Freelance]]'' hosted one of these during the [[Filler Strips|Filler Arc]] "[https://web.archive.org/web/20160130122754/http://www.sluggy.com/daily.php?date=000327 Sluggy Freelance: Where Are You?]" When all of ''Sluggy's'' [[Animated Actors|actors]] are kidnapped (a.k.a. Pete Abrams decides to take some time off) characters from several other webcomics are hired to fill in for them and/or find the kidnappers.
* Several members of the [http://www.webcomicsinc.com/ Webcomics Inc.] social networking site collaborated on a crossover comic, where they made all their characters teen-aged and put them into high school together. The result, [http://www.wcihigh.com WCI High], merged characters from [http://www.goodtimescomic.com/ Good Times], [http://mikeyslife.com/ Mikey's Life], [http://www.webcomicsnation.com/eddurd/everydayheroes/series.php Everyday Heroes], and [http://www.bigsandygilmore.com/ Big Sandy Gilmore].
* Several members of the [https://web.archive.org/web/20140619145001/http://webcomicsinc.com/ Webcomics Inc.] social networking site collaborated on a crossover comic, where they made all their characters teen-aged and put them into high school together. The result, [https://web.archive.org/web/20160330014219/http://wcihigh.com/ WCI High], merged characters from [http://www.goodtimescomic.com/ Good Times], [https://web.archive.org/web/20141217105727/http://mikeyslife.com/ Mikey's Life], [http://www.webcomicsnation.com/eddurd/everydayheroes/series.php Everyday Heroes], and [https://web.archive.org/web/20140423232618/http://www.bigsandygilmore.com/ Big Sandy Gilmore].
* [[Least I Could Do]] recently finished the Ultimate Final Civil War Invasion Crisis Thing, which featured the gaming webcomic characters trying to kill the slice-of-life comic characters. ([[Order of the Stick]], meet [[Xkcd (Webcomic)|Xkcd]].)
* [[Least I Could Do]] recently finished the Ultimate Final Civil War Invasion Crisis Thing, which featured the gaming webcomic characters trying to kill the slice-of-life comic characters. ([[Order of the Stick]], meet [[Xkcd]].)
* [[Ménage à 3]] and [[Sore Thumbs]] crossed over at some point and are implied to be in the same universe, and [[Ménage à 3]] crossed over with [[School Bites]]. If this keeps up we'll wind up with every webcomic crossing over to one another.
* [[Ménage à 3]] and [[Sore Thumbs]] crossed over at some point and are implied to be in the same universe, and [[Ménage à 3]] crossed over with [[School Bites]]. If this keeps up we'll wind up with every webcomic crossing over to one another.
* The writer of [[Web Comics/No Rest For The Wicked|No Rest For The Wicked]] footnotes her comics so you can get all the fairy tales she's using characters from.
* The writer of [[Web Comics/No Rest For The Wicked|No Rest For The Wicked]] footnotes her comics so you can get all the fairy tales she's using characters from.
* [[Final Blasphemy]] has characters from [[Mega Man (Video Game)|Mega Man]], [[Final Fantasy]], Mario, and several other gaming universes.
* [[Final Blasphemy]] has characters from [[Mega Man (video game)|Mega Man]], [[Final Fantasy]], Mario, and several other gaming universes.
* ''[[Troops of Doom (Webcomic)|Troops of Doom]]'' has [[G.I. Joe]]/Cobra and [[Star Wars]] Empire characters, as well as other random characters and an alien race called [[LEGO|Legonians]].
* ''[[Troops of Doom]]'' has [[G.I. Joe]]/Cobra and [[Star Wars]] Empire characters, as well as other random characters and an alien race called [[LEGO|Legonians]].



== [[Web Original]] ==
== [[Web Original]] ==
* Although there are [[Journal Roleplay|many similarly-themed RPs]], ''[[Milliways Bar]]'' deserves mention just for its ''size''. The basic premise is that any character from any fandom can find themselves at the titular bar... and sometimes it seems like just about everyone has.
* Although there are [[Journal Roleplay|many similarly-themed RPs]], ''[[Milliways Bar]]'' deserves mention just for its ''size''. The basic premise is that any character from any fandom can find themselves at the titular bar... and sometimes it seems like just about everyone has.
* The Game in which ''[[Life in A Game]]'' takes place seems to take ''all'' video games as true, with [[The Legend of Zelda (Franchise)|Zelda]] appearing alongside [[Halo|Master Chief]], and [[Chrono Trigger (Video Game)|Frog]] serving as the hero's [[Jerkass]] Mentor.
* The Game in which ''[[Life in A Game]]'' takes place seems to take ''all'' video games as true, with [[The Legend of Zelda|Zelda]] appearing alongside [[Halo|Master Chief]], and [[Chrono Trigger|Frog]] serving as the hero's [[Jerkass]] Mentor.
* The [[That Guy With the Glasses (Website)|That Guy With the Glasses]] [[TGWTG Year One Brawl|one year anniversary video]]. Basically, in a Chicago hotel 20 contributors of [[Video Review Show|Video Review Shows]] beat up one another in an [[Ultimate Showdown of Ultimate Destiny]], climaxing in {{spoiler|Super Mega Death Christ vs. Giant Robotic [[Donkey Kong]] Jesus riding a puff of smoke}} blowing up. You know what? [http://thatguywiththeglasses.com/videolinks/thatguywiththeglasses/nostalgia-critic/6719-1-year-anniversary-video Just watch it.]
* The [[That Guy With The Glasses]] [[TGWTG Year One Brawl|one year anniversary video]]. Basically, in a Chicago hotel 20 contributors of [[Video Review Show]]s beat up one another in an [[Ultimate Showdown of Ultimate Destiny]], climaxing in {{spoiler|Super Mega Death Christ vs. Giant Robotic [[Donkey Kong]] Jesus riding a puff of smoke}} blowing up. You know what? [https://web.archive.org/web/20130925190558/http://thatguywiththeglasses.com/videolinks/thatguywiththeglasses/nostalgia-critic/6719-1-year-anniversary-video Just watch it.]
{{quote| {{spoiler|'''[[Ask That Guy With the Glasses (Web Video)|Ask That Guy]]'''}}: (speaking to the various reviewers present) In fact, I think there's a lot of you who want to do crossovers, aren't there? Because everybody really eats that shit up.<br />
{{quote|{{spoiler|'''[[Ask That Guy With The Glasses|Ask That Guy]]'''}}: (speaking to the various reviewers present) In fact, I think there's a lot of you who want to do crossovers, aren't there? Because everybody really eats that shit up.
'''Everybody''': Yeah! }}
'''Everybody''': Yeah! }}
** All the cast stayed in Chicago for a couple more days to film crossovers after this. Highlights include [[Atop the Fourth Wall (Web Video)|Linkara]] being force-read his ''own'' Massive Multiplayer Crossover fanfiction by the Sage, the [[Professional Wrestling|Ultimate Warrior]] writes a comic series so bad that reality breaks down and Linkara and [[The Spoony Experiment (Web Video)|Spoony]] keep changing into different [[Alternate Universe]] selves and the Critic and [[The Angry Video Game Nerd (Web Video)|Nerd]] joining forces to review... a Making Of of a [[Teenage Mutant Ninja Turtles]] Tour. Yeah.
** All the cast stayed in Chicago for a couple more days to film crossovers after this. Highlights include [[Atop the Fourth Wall|Linkara]] being force-read his ''own'' Massive Multiplayer Crossover fanfiction by the Sage, the [[Professional Wrestling|Ultimate Warrior]] writes a comic series so bad that reality breaks down and Linkara and [[The Spoony Experiment|Spoony]] keep changing into different [[Alternate Universe]] selves and the Critic and [[The Angry Video Game Nerd|Nerd]] joining forces to review... a Making Of of a [[Teenage Mutant Ninja Turtles]] Tour. Yeah.
** Later on when faced with Uwe Boll's [[Alone in The Dark]], the Nostalgia Critic gave up on reviewing it. Until! [[The Spoony Experiment (Web Video)|Spoony]] and [[Atop the Fourth Wall (Web Video)|Linkara]] arrived to assist him.
** Later on when faced with Uwe Boll's [[Alone in the Dark]], the Nostalgia Critic gave up on reviewing it. Until! [[The Spoony Experiment|Spoony]] and [[Atop the Fourth Wall|Linkara]] arrived to assist him.
** And kicking off 2010, we have an epic review of [[Dragon Ball Evolution]], starring Paw, LordKat, Rollo T, Hopewithinchaos, and Y Ruler of Time, with guests including [[Yu-Gi-Oh the Abridged Series|LittleKuriboh]], [[Dragon Ball Abridged|MasakoX]] and [[The Happy Video Game Nerd]]. This was recorded while everyone was attending [http://en.wikipedia.org/wiki/MAGFest MAGFest].
** And kicking off 2010, we have an epic review of [[Dragonball Evolution]], starring Paw, LordKat, Rollo T, Hopewithinchaos, and Y Ruler of Time, with guests including [[Yu-Gi-Oh!: The Abridged Series|LittleKuriboh]], [[Dragon Ball Abridged|MasakoX]] and [[The Happy Video Game Nerd]]. This was recorded while everyone was attending [[wikipedia:MAGFest|MAGFest]].
** The [[Kickassia|Two Year Anniversary]] is another huge crossover event. And in turn, it allowed some once-in-a-lifetime crossovers as by this point, quite a few reviewers are from around the world.
** The [[Kickassia|Two Year Anniversary]] is another huge crossover event. And in turn, it allowed some once-in-a-lifetime crossovers as by this point, quite a few reviewers are from around the world.
** In 2011, things repeated. Y Ruler of Time used MAGFest to do another multiple reviewer crossover (''[[The Last Airbender]]'', with [[Todd in The Shadows]], [[Jesu Otaku]] and [[Rollo T]], plus various cameos). And Year Three had a [[Suburban Knights|crossover series]] and various individual joint reviews (Todd even opens [http://thatguywiththeglasses.com/videolinks/thatguywiththeglasses/specials/31178-bmbssm his one] saying that the trip means crossovers... and gets shot down by three people before [[Bad Movie Beatdown (Web Video)|Film Brain]] accepts to watch a movie with him).
** In 2011, things repeated. Y Ruler of Time used MAGFest to do another multiple reviewer crossover (''[[The Last Airbender]]'', with [[Todd in the Shadows]], [[JesuOtaku]] and [[Rollo T]], plus various cameos). And Year Three had a [[Suburban Knights|crossover series]] and various individual joint reviews (Todd even opens [https://web.archive.org/web/20130524124721/http://thatguywiththeglasses.com/videolinks/thatguywiththeglasses/specials/31178-bmbssm his one] saying that the trip means crossovers... and gets shot down by three people before [[Bad Movie Beatdown|Film Brain]] accepts to watch a movie with him).
* How about '''''[[Trope Namer|The]]''' [[Ultimate Showdown of Ultimate Destiny (Music)|Ultimate Showdown of Ultimate Destiny]]'' flash video? Good guys; bad guys; explosions as far as the eye can see. Way too many pop culture icons to count.
* How about '''''[[Trope Namer|The]]''' [[Ultimate Showdown of Ultimate Destiny (song)|Ultimate Showdown of Ultimate Destiny]]'' flash video? Good guys; bad guys; explosions as far as the eye can see. Way too many pop culture icons to count.
* ''[https://web.archive.org/web/20121203033841/http://keisuwabe.shikisokuzekuu.net/page035.html Symphony Of The Blood]'', a fake video game crossover between all the characters of the [[Reused Character Design|Star System]] of [[Osamu Tezuka]].
* [http://tvtropes.org/pmwiki/posts.php?discussion=867cnxpqmkkzb2bjc06knmpe&page=1 This] roleplay, taking place right here on our own forums. ''[[Princess Tutu]], [[Naruto]], [[Pokémon (Anime)|Pokémon]], [[The Legend of Zelda (Franchise)|The Legend of Zelda]], [[No More Heroes]]'', and ''[[Discworld]]''- and that's just for starters.
** [[The Massive Multi Fandom RPG|It has its own page now]]. Although technically I'd say it's more of a [[Mega Crossover]].
* ''[http://keisuwabe.shikisokuzekuu.net/page035.html Symphony Of The Blood]'', a fake video game crossover between all the characters of the [[Reused Character Design|Star System]] of [[Osamu Tezuka]].



== [[Western Animation]] ==
== [[Western Animation]] ==
* Disney owns all the characters it uses plus a whole network. The most recent example is ''[[House of Mouse]]'', which has Mickey and Co. as hosts of a nightclub/theater, with the characters of the feature films as the audience.
* Disney owns all the characters it uses plus a whole network. The most recent example is ''[[House of Mouse]]'', which has Mickey and Co. as hosts of a nightclub/theater, with the characters of the feature films as the audience.
* Many classic [[Hanna-Barbera]] characters have been used across the board, in shows like ''[[Laff-a-Lympics]]'' and ''[[Yogis Gang]]''; this is still done, but with a more satirical bent (e.g., ''[[Harvey Birdman Attorney At Law]]'').
* Many classic [[Hanna-Barbera]] characters have been used across the board, in shows like ''[[Laff-A-Lympics]]'' and ''[[Yogis Gang]]''; this is still done, but with a more satirical bent (e.g., ''[[Harvey Birdman, Attorney at Law]]'').
* Nearly all recent [[Warner Bros]] animated television series made references and overt cameos with one another.
* Nearly all recent [[Warner Bros]] animated television series made references and overt cameos with one another.
* As stated above, the early-90s [[Very Special Episode|public service announcement]] ''[[Cartoon All Stars to The Rescue]]'' had characters like the ''[[Teenage Mutant Ninja Turtles]]'', ''[[The Smurfs]]'', ''[[Winnie the Pooh]]'', the cast of ''[[Duck Tales]]'', and many others team up to teach a single kid about the dangers of drugs {{spoiler|and save his sister}}. Although, if you can see Smurfs, there's a good chance you're tripping balls already.
* As stated above, the early-90s [[Very Special Episode|public service announcement]] ''[[Cartoon All-Stars to the Rescue]]'' had characters like the ''[[Teenage Mutant Ninja Turtles]]'', ''[[The Smurfs]]'', ''[[Winnie the Pooh]]'', the cast of ''[[DuckTales (1987)]]'', and many others team up to teach a single kid about the dangers of drugs {{spoiler|and save his sister}}. Although, if you can see Smurfs, there's a good chance you're tripping balls already.
* The '80s cartoon ''[[Defenders of the Earth (Animation)|Defenders of the Earth]]'' starred King Features' most famous adventure-hero characters: [[Flash Gordon (Comic Strip)|Flash Gordon]], [[The Phantom (Comic Strip)|The Phantom]], and [[Mandrake the Magician (Comic Strip)|Mandrake the Magician]] (along with his sidekick, the [[The Big Guy|strongman]] Lothar).
* The '80s cartoon ''[[Defenders of the Earth]]'' starred King Features' most famous adventure-hero characters: [[Flash Gordon (comic strip)|Flash Gordon]], [[The Phantom (comic strip)|The Phantom]], and [[Mandrake the Magician]] (along with his sidekick, the [[The Big Guy|strongman]] Lothar).
* Much earlier, in 1972, the one-off animated special ''[[The Man Who Hated Laughter (Animation)|The Man Who Hated Laughter]]'' united ''all'' of King Features' popular characters -- meaning not only Flash, the Phantom, Mandrake, and Lothar, but also the likes of [[Popeye (Comic Strip)|Popeye]], [[Blondie (Comic Strip)|Blondie]], Snuffy Smith, and [[Beetle Bailey (Comic Strip)|Beetle Bailey]].
* Much earlier, in 1972, the one-off animated special ''[[The Man Who Hated Laughter]]'' united ''all'' of King Features' popular characters—meaning not only Flash, the Phantom, Mandrake, and Lothar, but also the likes of [[Popeye (comic strip)|Popeye]], [[Blondie (comic strip)|Blondie]], [[Snuffy Smith]], and [[Beetle Bailey]].
* ''[[Captain N the Game Master]]'' featured a mishmash of characters who appeared on the [[Nintendo Entertainment System]] [[In Name Only|done wrong]]. Most of the episodes took place in the neutral Videoland, with characters like [[Castlevania|Simon Belmont]], [[Mega Man (Video Game)|Mega Man]] and <s>[[I Am Not Shazam|Kid Icarus]]</s> [[Kid Icarus|Pit]] hanging around, even if [[In Name Only]]. Link and Zelda from ''[[The Legend of Zelda (Franchise)|The Legend of Zelda]]'' (more accurately, from [[Super Mario Bros Super Show|the Zelda cartoon]]) appeared too.
* ''[[Captain N: The Game Master]]'' featured a mishmash of characters who appeared on the [[Nintendo Entertainment System]] [[In Name Only|done wrong]]. Most of the episodes took place in the neutral Videoland, with characters like [[Castlevania|Simon Belmont]], [[Mega Man (video game)|Mega Man]] and <s>[[I Am Not Shazam|Kid Icarus]]</s> [[Kid Icarus|Pit]] hanging around, even if [[In Name Only]]. Link and Zelda from ''[[The Legend of Zelda]]'' (more accurately, from [[Super Mario Bros Super Show|the Zelda cartoon]]) appeared too.
* The [[Children in Need]] music video "Peter Kay's Animated All-Star Band", which features nearly every significant British [[Stop Motion]] characters with a few 2D British and American characters broadcast "live via satellite", including ''[[Roary the Racing Car]]'', ''[[Fifi and The Flowertots]]'', ''[[The Wombles]]'', ''[[In The Night Garden]]'', ''[[Angelina Ballerina]]'', ''[[Scooby Doo|Scooby-Doo]]'', ''Bagpuss'', ''Bob the Builder'', ''[[Ben 10 (Animation)|Ben 10]]'', ''[[Thunderbirds]]'', ''[[Postman Pat]]'', ''[[SpongeBob SquarePants (Animation)|SpongeBob SquarePants]]'', ''[[Fireman Sam]]'', ''[[Camberwick Green]]'', and ''[[Paddington (Animation)|Paddington]]'' amongst others.
* The [[Children in Need]] music video "Peter Kay's Animated All-Star Band", which features nearly every significant British [[Stop Motion]] characters with a few 2D British and American characters broadcast "live via satellite", including ''[[Roary the Racing Car]]'', ''[[Fifi and the Flowertots]]'', ''[[The Wombles]]'', ''[[In The Night Garden]]'', ''[[Angelina Ballerina]]'', ''[[Scooby Doo]]'', ''Bagpuss'', ''Bob the Builder'', ''[[Ben 10]]'', ''[[Thunderbirds]]'', ''[[Postman Pat]]'', ''[[SpongeBob SquarePants]]'', ''[[Fireman Sam]]'', ''[[Camberwick Green]]'', and ''[[Paddington]]'' amongst others.
** [[Doing It for The Art|All singing parts of the characters by their original voice actors. The video took two years to produce, and it's for charity.]]
** [[Doing It for the Art|All singing parts of the characters by their original voice actors. The video took two years to produce, and it's for charity.]]
* Done with advertising mascots in the short film ''[[Logorama]]''. [[Better Than It Sounds]]; it won the 2009 Oscar for Best Animated Short.
* Done with advertising mascots in the short film ''[[Logorama]]''. [[Better Than It Sounds]]; it won the 2009 Oscar for Best Animated Short.
* ''[[The Rosey And Buddy Show]]'', a 1992 TV special produced by [[Nelvana]], featured not only animated versions of [[Roseanne]] and Tom Arnold, but also the [[Care Bears]], [[Beetlejuice (Animation)|Beetlejuice]], Tom&Jerry, [[Droopy]] and even [[Wile E Coyote and The Road Runner (Animation)|Wile E Coyote and The Road Runner]]'s stunt double.
* ''[[The Rosey And Buddy Show]]'', a 1992 TV special produced by [[Nelvana]], featured not only animated versions of [[Roseanne]] and Tom Arnold, but also the [[Care Bears]], [[Beetlejuice (animation)|Beetlejuice]], Tom&Jerry, [[Droopy]] and even [[Wile E. Coyote and The Road Runner|Wile E Coyote and The Road Runner]]'s stunt double.


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[[Category:Crossover Index]]
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[[Category:Better Than It Sounds/Comic Books]]
[[Category:Better Than It Sounds/Comic Books]]
[[Category:Creator Speak]]
[[Category:Creator Speak]]
[[Category:Crossover/Sandbox]]
[[Category:Crossover Index]]
[[Category:Fanfic Tropes]]
[[Category:Fanfic Tropes]]
[[Category:Older Than Feudalism]]
[[Category:Older Than Feudalism]]
[[Category:Massive Multiplayer Crossover]]
[[Category:Trope]]

Latest revision as of 20:01, 18 March 2024

Let's see... Optimus Prime, Tyson, Master Higgins, Bomberman, Hugo, Twinbee, Simon Belmont... just to name a few

"So many heroes from so many dimensions! This is pretty cool!"

A Crossover that involves characters from more than two shows or more than two fictons.

More often than not, this is a mash up of series which do not have a strict sense of continuity or a clear Universe Bible. To lessen Canon-faulting, especially with series that do have strict continuity, a new 'neutral' setting is made that offers equal footing for all the characters.

This rarely occurs in live action shows, unless a production company can be formed that holds copyrights to everything. Thus, this is much more common in animated series — although you can generally expect The BBC to pull one out of somewhere when Children in Need or Comic Relief rolls around.

It also becomes more viable the farther you get from Canon, such as one-time TV specials and especially video games (Kingdom Hearts, Jump Super Stars, Super Robot Wars, etc.)

As Story Arcs have become more prevalent, this practice has somewhat lessened, with shifts to strict Verse building and explicit references.

This trope has become increasingly common in video games, especially those involving both licensed and original properties. These games, depending on how far or how deep they mine, can have interesting effects on the fiction chosen. Many long-gone and/or forgotten Humongous Mecha shows, for example, often get a new lease on life, or even a brand-new sequel or remake, after making an appearance or two in a Super Robot Wars game. Similarly, the Fire Emblem series was finally brought over to the US to great success after two of its characters made an appearance as unlockable fighters in Super Smash Bros. Melee.

In spite of its recently emerging prevalence, this trope is Older Than Feudalism. The Argonautica by Apollonius Rhodius (3rd century BCE) features nearly every ancient Greek mythical hero all going on a quest to find the Golden Fleece.

Sub-Tropes:

See also Power Creep, Power Seep and Story-Breaker Team-Up.

Examples of Massive Multiplayer Crossover include:

Advertising

  • A recent[when?] MasterCard commercial featured several food mascots (from Count Chocula to the Pillsbury Doughboy) eating dinner — with Mr. Clean doing the dishes.
  • USA Network's commercials play this for laughs, having various combinations of characters from their shows (Burn Notice, Monk, Psych, others) encounter each other and make idle conversation.
  • UK example: The Greatest Minds In Advertising Join Forces in a 2009 viral for Comic Relief.

Anime and Manga

Comic Books

Film

Literature

  • Science Fiction author Philip José Farmer's Wold-Newton universe includes scores of public domain characters as well as many characters popular from early Radio Drama and film, such as The Shadow and Tarzan, who are not quite out of copyright. Fans have added many modern TV characters to the list.
  • Philip José Farmer's Riverworld series does this with actual people from history.
  • Kim Newman once wrote a short story about Terry and Bob of the British sitcom The Likely Lads fighting in the Vietnam war with William of Richmal Crompton's old Just William stories and other fictional characters.
  • Silverlock by John Myers Myers, in which the protagonist A. Clarence Shandon is shipwrecked in the Commonwealth of Letters, where everywhere he goes and everyone he meets is a literary, mythical and/or historical reference.
    • A fairly extensive list of specific references can be found here.
  • Robert A. Heinlein's The Number of the Beast features a Time Travel device that does double duty as a portal into The Multiverse, allowing his characters to visit every fictional universe ever, including all of Heinlein's own novels. They coin the term "World as Myth" to describe the Recursive Canon necessary to make this work, and wind up hosting a convention for just about every Science Fiction character ever.
  • Spider Robinson's Callahans Crosstime Saloon series - including Callahan's Lady - contains cameos from characters created by crime writer Donald E. Westlake, SF legend Robert Heinlein, and even classic British humourist PG Wodehouse, all interacting with each other. (Most likely inspired by Heinlein's The Number of the Beast, mentioned above.)
  • Simon R. Green's Nightside take place in a secret city under London that's a giant crossoverfest. John Taylor, Green's protagonist, has met characters from all manner of books, movies, television shows, and other assorted places though they are largely referred to in vague, shadowy terms so he doesn't violate the copyrights too badly. There's everything from a Traveling Doctor who had a trick with celery to having to exorcise Kandarian demons from his answering machine to giant 'bears of little brain' that work for the auction house.
    • For even more fun, representatives from most of Green's other series (the Deathstalker novels, the Darkwood books, etc) show up, waiting around to speak to Father Time.
  • While Neil Gaiman's short story A Study in Emerald is primarily a crossover between the works of H.P. Lovecraft and Arthur Conan Doyle, it contains subtle hints that characters such as Dracula, Frankenstein, and Dr. Jekyll also exist in the same universe.
  • A Night in the Lonesome October features Jack the Ripper, Sherlock Holmes, Dracula, Frankenstein, Rasputin, The Wolf Man, and many others in a complex game determining whether or not Cthulhu and the other elder gods return to Earth. Interestingly, Jack is the hero...
  • And again in Roger Zelazny's book "Roadmarks" where Red runs across a short man with a small mustache whom Red refers to as "Adolph" driving a battered black Volkswagen, and later on in the book he makes a call to someone he calls "Doc", who is described as "A big golden-eyed guy with one hell of a suntan, wearing a torn shirt, and driving a hot little 1920's roadster" which could only have been Doc Savage.
    • Doc Savage villain John Sunlight also makes an appearance.
  • Zelazny was a comic book reader and fan. In Blood of Amber, Merlin has dinner at Bloody (Last Deceased Owner's Name)'s place—Boody Andy's at the time—while a gent (with a pronounced scar through his eye) eats at a neighboring table and warns Merlin to show a blade so the local roughs get no ideas. "Old John" was clearly John Ostrander and Tim Truman's mercenary John Gaunt (aka Grinner, Grim Jack) from Cynosure, a cross-dimensional city in a multiverse adjacent to Amber. The two roughs did not last the night.
  • The works of Dr. Seuss were combined into a Broadway musical called Seussical, which mainly takes its story from Horton Hears a Who!, Horton Hatches the Egg, and The One Feather Tail of Miss Gertrude McFuzz, but contains elements and characters from I Had Trouble in Getting to Solla Sollew, The Butter Battle Book, How the Grinch Stole Christmas, and more. And of course, they have The Cat in the Hat to move the plot around.
    • Jim Henson's The Wubbulous World of Dr Seuss did something similar, with Yertle the Turtle as a recurring villain.
  • Stephen King's The Dark Tower series spans across the majority of his prior works.
  • The Harold Shea series of short stories are about Harold and company visiting various settings taken from mythology and public domain fiction, usually one per story.
  • Brazilian author Monteiro Lobato took this trope to insane levels in his kids' books set in the Yellow Woodpecker Farm. The eponymous farm is an interdimensional nexus to, essentially, every fantasy and adventure fiction character ever written, including but not limited to the Greek Gods, Sherlock Holmes, the Neverland people, the Arabian Nights, the fables from Aesop, Grimm, Andersen, The Three Musketeers, medieval Knighs etc etc etc ad infinitum. He even managed to throw in some characters copyright laws didn't allow him to. To top if off, characters native to the series' own universe are not few in number.
  • Jasper Fforde likes this trope a lot. Pretty much every Bookworld character in the Thursday Next series comes from another book. According to the rules of its universe every book crosses over with it. Including itself. Many of the characters from the Nursery Crimes series are right out of nursery rhymes.
  • Peter David wrote two novels where X-Men characters appeared in the Star Trek: The Next Generation universe.
  • L. Frank Baum did this in the fourth book of the Oz series, The Road to Oz, by inviting characters from his other books to attend Princess Ozma's birthday party, hoping to get his Oz readers interested in those other non-Oz stories. This included everybody up to and including Santa Claus (as in The Life and Adventures of). The implication, of course, is that every book Baum ever wrote takes place in the same universe as the Oz books.
  • James A. Owen's The Chronicles of the Imaginarium Geographica does this with pretty much every major work of fantasy, history, and real life. It's awesome.

Live-Action TV

  • The "Night of Elizabeth Taylor", broadcast on CBS around 1995-96, saw a diamond necklace lost by Elizabeth Taylor became a common plot element linking four SitComs -- The Nanny, Cant Hurry Love, Murphy Brown and High Society—in one massive crossover. It was intended as an embedded advertisement for Taylor's new perfume, Black Pearls.
  • Disney did a triple-episode MMC with three of its shows. The show was entitled That's So Suite Life Of Hannah Montana, with one classed as a Suite Life episode, one as a Raven episode, and one as a Hannah Montana episode, where Hannah and Raven visited the hotel the twins live in.
    • Likewise, there's the Wish Gone Amiss triple-episode, except it is more loosely tied together. It all involves the title characters from Cory in The House, The Suite Life of Zack and Cody, and Hannah Montana making a wish on apparently the same shooting star. Each episode has its own method of returning to the Status Quo—Cory gets a literal Reset Button, Zack and Cody's wish was all just Zack's dream, and Hannah returns her life to normal when Jackson unwittingly wishes that the world did not know Hannah's double life.
    • There's also the Wizards On Deck with Hannah Montana that goes by the same formula that the That's So Suite Life of Hannah Montanna did, except with the stars visiting the hotel's ship instead of the hotel itself.
  • Kamen Rider Decade is this in regards to the Heisei era Kamen Rider shows. The main character dimension jumps into alternate universes based on the 9 previous Kamen Rider series of the last 10 years (as well as the canonical universe of Samurai Sentai Shinkenger). Plus, the first movie features every main Rider created before Decade, even ones that only had appeared in one-shot movies previously.
    • The second movie, a Grand Finale, even includes some Post Modernism commentary on the "interesting effects on the fiction chosen" mentionned in the opening paragraphs. To quote the original universe Wataru: "The tales of the Riders were something that would be eventually lost to time. But because of Decade's battles, they will remain fresh in people's minds..."
  • Similarly to Kamen Rider Decade, Kaizoku Sentai Gokaiger is a crossover series. But compared to Decade, in which the main character could only be Riders of the last decade, the Gokaigers can transform into any of the Sentai from the past 34 teams (barring Sixth Rangers - that is, until their own Sixth Ranger joined up). Additionally, while Decade established that every past Kamen Rider was its own universe, Gokaiger establishes that all Super Sentai took place in a single universe.
  • The Children's Party at the Palace, a British production broadcast live from Buckingham Palace on June 25, 2006, celebrated Queen Elizabeth II's 80th birthday with a wild romp featuring dozens of literary and TV characters including (among many others) Cruella DeVille, Peter Pan and Captain Hook, Sir Topham Hatt from Thomas the Tank Engine, Wallace and Gromit, the White Rabbit from Alice in Wonderland, Enid Blyton's The Famous Five, Harry Potter, Ron Weasley, Hermione Granger and Neville Longbottom from the Harry Potter movies, and starred the Queen as herself.
  • The Sabrina the Teenage Witch episode "Inna-Gadda-Sabrina" extended its story through the following three shows that night: Boy Meets World, You Wish, and Teen Angel. Each show was set in a different time period in going with the theme.
    • It wasn't the first time - in fact, quite a few crossovers spanned the entire TGIF lineup from time to time, and even an occasional though less involving tie-in for all ABC weekly sitcoms during this period.
    • There was also one that was linked by Steve Urkel. He ends one episode of Family Matters by blasting through the Winslows' roof in a jet pack, and he crashes into the Lamberts' roof at the beginning of the an episode of Step by Step where the plot centers around him. I forget if any other shows were connected as well.
  • A very simple one, but the iStart A Fan War episode of iCarly included characters from Drake and Josh and Zoey 101, helping to fill out the Nick Verse.
  • A Muppet Family Christmas included characters from all Muppet-related programmes: The Muppet Show, Sesame Street, Fraggle Rock and even Muppet Babies.
  • In Doctor Who, the climax of the Second Doctor serial The Mind Robber. D'Artagnan vs. Cyrano de Bergerac! Blackbeard vs. Sir Lancelot! Plus Gulliver and Rapunzel on the sidelines.
  • Law and Order crossed over with Homicide: Life on the Street a few times, until they eventually just decided they were set in the same continuity altogether, to the point of having John Munch, who originated in the latter show, permanently set up shop in the former.
  • The Tommy Westphall Hypothesis states that dozens if not hundreds of television series have all happened within the mind of a young autistic boy living in Boston.
    • John Munch is a central figure in this Hypothesis.
  • The Earth Day Special, which aired on ABC in 1990, was a huge crossover featuring just about every pop culture icon from The Eighties in a very bizarre, thoroughly nonsensical plot.
    • Also in 1990, Cartoon All-Stars to the Rescue, the ultimate Very Special Episode combining well over a dozen Eighties cartoon characters. Aired once and only once, it's full of Narm yet also bizarrely entertaining. Rumor has it that it's never been aired since because Jim Davis claimed he hadn't authorized Garfield's inclusion in the show.
  • In the CSI-verse, the original series crossed over with the Miami series in 2002 to serve as the pilot for the latter; the Miami series then crossed over with the New York series in 2004 to serve as that series' pilot, and the series crossed over again in a two-hour storyline in 2005. The original series also crossed over with Without a Trace in 2007 a two-hour storyline across both series. Following the departure of William Petersen (who opposed the spinoffs and did not appear in any scenes featuring the Miami team in "Cross Jurisdictions"), CBS put together a massive crossover in 2009 spanning all three series that involved the Las Vegas series' Raymond Langston going to Miami and New York while investigating a human trafficking organisation.
  • The 2009 Two Pints of Lager and a Packet of Crisps Comic Relief special, which brought in characters from BBC Three's other sitcoms Grown Ups and Coming of Age. And yes, Sheridan Smith was Acting for Two.
  • The second western MMC took place a year after the first on what seemed to be an ordinary episode of Maverick called "Hadley's Hunters"; during the course of that hour he ran into people from 5 other shows: Lawman, Cheyenne, Bronco, Sugarfoot, and he stops by the office from Colt 45 but nobody was home (a reference to the show being recently canceled).
    • Strangely he also ran into the parking lot attendant from 77 Sunset Strip which was set in the 1960s—I guess he had an ancestor who lived in the old west.
  • The final western MMC took place over 30 years later in the made for tv movie The Gambler Returns: The Luck of the Draw, where the title character crosses over with 10 different series. During the course of the film The Gambler meets people from Bat Masterson, The Life And Legend Of Wyatt Earp, Maverick, Cheyenne, Kung Fu, The Rifleman, The Westerner, The Virginian, and Rawhide, plus the main game was in honor of the main character from Have Gun — Will Travel.

Oral Tradition, Folklore, Myths and Legends

  • The Argonautica (a.k.a. Jason and the Argonauts) by Apollonius of Rhodes (3rd century BCE) is one of the very first Massive Multiplayer Crossovers, arranged in what would become a fairly classic method—basically throwing one or two dozen heroes from various separate Greek myth cycles together on a boat with a common mission. This of course makes the Massive Multiplayer Crossover Older Than Feudalism.
    • Many of the same characters also appear in the story of the Kalydonian Boar Hunt - which, Depending on the Writer, may occur before or after The Argonautica.
  • According to some religious studies texts, this has also gone on in many, many other myths: the most notable involve various saints meeting each other. This goes on even today.
  • Arthurian Myth formed this way, starting with stories about a Celtic chieftain and slowly incorporating other works into itself, including Sir Gawaine and the Green Knight and an entire cycle of French poetry that introduced Lancelot.
    • Geoffrey of Monmouth, in his Vita Merlini (The life of Merlin), combined the legends of the poets/wizards Myrddin Wyllt (Merlin), and Taliesin into the Arthurian legend.
    • Wolfram von Eschenbach likewise connected the Arthurian legend to the otherwise unrelated legends of Prester John (a mythical Indian/African king), and Lohengrin, the Knight of the Swan, in his epic poem Parzival by stating that Feirefiz (Parzival's African half-brother) was Prester John's father, and that Parzival was Lohengrin's father.
    • Robin Hood and Maid Marian likewise appear in T.H. White's The Once and Future King quartet.
    • The Weirdstone of Brisingamen Adds in Norse Mythology to the mix.
  • Similarly, the Robin Hood stories started with a poem about a outlaw (sort of a medieval version of "The Ballad of Jesse James"), and turned into a collection of stories which kept getting characters from other contexts added to it—like Maid Marian, who originally appeared in generic May Day songs.

New Media

  • Weezer's "Pork And Beans" music video. It's got almost everything that ever appeared on Youtube short of OK Go and The Angry Video Game Nerd.
  • The Machinima "Beans". Firstly, it crosses over characters from three different series and is made by three different machinima directors, then the storyline involves various internet memes... Oh. And it's made on Super Smash Bros.. Making it a crossover on a crossover.

Newspaper Comics

  • On several occasions over the past couple decades, cartoonists from the same syndicate have indulged in special events in which their characters migrate to each other's strips.

Recorded and Stand Up Comedy

  • There's a Star Trek-related comedy routine in which Mr. Spock, the HAL 9000 computer, and Obi-Wan Kenobi all appear on Jeopardy, in a mental variant of an Ultimate Showdown of Ultimate Destiny. Kenobi is declared the winner, but only because he uses the Jedi Mind Trick on Alex Trebek.
  • Stand-up comedy troupes sometimes feature a series of comedians who usually headline their own shows:
    • The Original Kings of Comedy
    • The Blue Collar Comedy Tour
    • The Comedians of Comedy

Tabletop Games

Theatre

  • Seussical has characters from several of Dr. Seuss' books

Video Games

Web Comics

  • There have been at least two webcomic Massive Multiplayer Crossovers: The Framed!!! Great Escape and the recently[when?] ended Crossover Wars
  • Though it never crossed over with both at the same time, It's Walky!! had crossovers with both Melonpool and Fans! that established both as part of its universe (or multiverse in the latter case) and which ended up having a lasting impact on its storyline.
  • Kevin and Kell and General Protection Fault had an arc where two GPF characters wandered into K&K's Domain world. The artists managed to work the events into both their storylines that were running at the time, and apparently drew a strip each day—both had two-strip days where the storyline advanced.
  • Starslip Crisis: Alterverse War is a mashup of a large number of science fiction webcomics, and had just started as of October 2007.
  • The webcomics Queen of Wands and Something*Positive had a couple of crossover stories. Later, after QOW ended its run, Kestrel showed up as a semi-regular on S*P.
    • Choo-Choo Bear hired the Pet Professional from the webcomic of the same name to kill his homicidal cousin Twitchy-Hug.
    • And recently Davan from S*P has been seen texting with Candy from Girls with Slingshots after running into her at the wedding of Jameson and Maureen.
    • Choo-Choo Bear later had kittens with Sprinkles of Girls with Slingshots, one of whom Davan gave to Roz of Shortpacked!, and another is by Hazel to her cousin Robyn from All New Issues.
  • Questionable Content has crossed over with Diesel Sweeties, which has itself crossed over with Scary Go Round. Questionable Content has also crossed over with Applegeeks, which, having crossed over with Ctrl+Alt+Del, would turn the whole group into one quasi-incestuous ball of webcomics. I'm reasonably certain that PvP has been referenced in at least one of these, probably Diesel Sweeties, and since the former has crossed over with Penny Arcade more than once, it's completely cross-eyed insane over there.
    • And the Author of Ctrl+Alt+Del exists as a person in the Penny Arcade universe, so that means, if you follow the little red thread of universal strings, that he exists in the same plane of existence as his characters..
    • Don't forget that Applegeeks had a major crossover (well, on its end) with Megatokyo at one point. Which chains the whole thing to a specific date, making things even crazier.
    • It gets better. Questionable Content is now having background extras as characters from other comics like Girls with Slingshots, Octopus Pie, Anders Loves Maria and Overcompensating. Since Overcompensating features the author and most people known in the webcomic industry, it means all these characters now exist in the same universe as their creators.
    • The cast of Shortpacked has visited the Coffee of Doom coffee house from QC on occasion, including once when both artists did a take on the same scene. Combine that with the S*P Intercontinuity Crossover Nexus mentioned above, along with all their respective crossovers, and we have a massive webcomic universe that could give Marvel a run for its money.
  • Sluggy Freelance hosted one of these during the Filler Arc "Sluggy Freelance: Where Are You?" When all of Sluggy's actors are kidnapped (a.k.a. Pete Abrams decides to take some time off) characters from several other webcomics are hired to fill in for them and/or find the kidnappers.
  • Several members of the Webcomics Inc. social networking site collaborated on a crossover comic, where they made all their characters teen-aged and put them into high school together. The result, WCI High, merged characters from Good Times, Mikey's Life, Everyday Heroes, and Big Sandy Gilmore.
  • Least I Could Do recently finished the Ultimate Final Civil War Invasion Crisis Thing, which featured the gaming webcomic characters trying to kill the slice-of-life comic characters. (Order of the Stick, meet Xkcd.)
  • Ménage à 3 and Sore Thumbs crossed over at some point and are implied to be in the same universe, and Ménage à 3 crossed over with School Bites. If this keeps up we'll wind up with every webcomic crossing over to one another.
  • The writer of No Rest For The Wicked footnotes her comics so you can get all the fairy tales she's using characters from.
  • Final Blasphemy has characters from Mega Man, Final Fantasy, Mario, and several other gaming universes.
  • Troops of Doom has G.I. Joe/Cobra and Star Wars Empire characters, as well as other random characters and an alien race called Legonians.

Web Original

Ask That Guy: (speaking to the various reviewers present) In fact, I think there's a lot of you who want to do crossovers, aren't there? Because everybody really eats that shit up.
Everybody: Yeah!

Western Animation

  1. SNK vs. Capcom SVC Chaos doesn't count, it was made by SNK