Shared Universe

    Everything About Fiction You Never Wanted to Know.
    (Redirected from Shared World)

    When The Verse is shaped by multiple creators, writing independently. Many different comic book titles are set in a collective continuity, making it easy to have a Crossover. In contrast, a single TV series with multiple writers is just the Verse with subcontractors. Likewise, when different continuities by the same author are tied together later by an Intercontinuity Crossover, that's Canon Welding.

    The nature of the Shared Universe — multiple independent creators creating one continuity — can easily lead to a Continuity Snarl if it lasts a long time and the different creators don't take care to keep things straight. If a Shared Universe starts relying too heavily on continuity, especially if it's obscure or too reliant on each work in the Verse, a Continuity Lock Out may occur. When creators disagree on the direction the Verse should take, they may fight Armed with Canon. If some corners of the continuity are "off limits" to some characters to avoid theme-drift or plot derailing, then Superman Stays Out of Gotham.

    When they go back centuries, and even further and further, long before copyrights and trademarks, the Shared Universe turns into one or more actual mythologies. Compare with The Verse, Expanded Universe and Canon. Contrast with Shout-Out.

    Note: just because two or more works have had a Crossover does not mean that they share a universe.

    Examples of Shared Universe include:

    Anime and Manga

    Comic Books

    • Various universes of Marvel Comics.
    • Similar to Marvel, The DCU is an examples of this, with multiple monthly titles who might not even have the same creative team month to month.
      • And those two are connected by the Amalgam universe, several canonical crossovers and a few characters who break the fourth wall.
    • Ninja High School and Gold Digger loosely share a universe and occasionally engage in crossovers or use each other's villains.
    • In the Savage Dragon, there is a shared universe that not only consists of the rest of the Image Universe but also creator-owned properties such as Hellboy, Madman, and Bone have made appearances. Aside from that, Erik Larsen likes to slip in characters from the Marvel Universe and DC Universe. Often, this consists of characters showing up far in the background, being mention in passing but not shown, or having a single boot or glove visible that indicates that those characters are there but enough is concealed to avoid copyright issues.
      • Virtually all of the early Image Comics titles were set in the same universe, with the stars of any given book often making guest appearances in another. However, one of the core ideas of the company was and always has been creator ownership. This caused a Continuity Snarl no less than twice; Once, when Rob Liefeld picked up his characters and left to create Awesome Comics (though he returned after Awesome folded), and again when Jim Lee took his properties, which encompassed about half a dozen titles, and made his Wildstorm Studios into a DC imprint.
      • Currently, Invincible shoulders a lot of weight when it comes to establishing a larger Image universe. Characters from Kirkman's other books popping up frequently, and big events (like the funeral of the Guardians of the Globe or the Invincible War) feature just about anyone who's anyone in the company at the time. At one point Mark was even a member of the Pact, a team consisting of him, Zephyr Noble, Fire Breather, and Shadowhawk.

    Fan Works

    • Dangerverse fans have written numerous fics of their own set in the same universe, many of which have been integrated into the canon, as well as Alternate Universe Fic aplenty. The author has no qualms about working in ideas from her friends and fans.
    • The AU Shadowverse stories about Magical Girl Lyrical Nanoha characters Lutecia and Vivio, created by Radiant Beam, also involve many other writers who write about secondary characters in that universe. Each of the various authors tend to write around different themes (spy-thriller, emotional drama, political-thriller, etc) despite writing in the same AU.
    • More than a decade after the release of Under The Bridge, Chip 'n Dale Rescue Rangers fan fiction writers love to include enough elements from The Nowakverse into stories of their own, especially the main original characters.
    • The Secret Return of Alex Mack has spawned a shared universe called The Teraverse (also known as the "Alexverse", for the main character of the original story). This turns out to be part of a larger 'verse spanning multiple universes, called A Brane of Extraordinary Women, whose contributors mostly overlap with the Teraverse writers.
    • The Sailor Moon Expanded project was intended as a shared fanverse from the very start.
    • My Apartment Manager is not an Isekai Character has had anywhere from two to six writers active at any given time, although by the end of 2022 that number has stabilized at the high end of that range.


    • The Marvel Cinematic Universe -- a single coherent world which officially began with Iron Man in 2008 (and retroactively included two previous Incredible Hulk movies). As of early 2021 the MCU is composed of twenty-three films with fourteen more in varying stages of production, plus nearly twenty TV shows either broadcast or soon to be broadcast over the air or on various streaming services. Made by Marvel Comics' own film division, Marvel Studios, it blends a remarkable faithfulness to the original material with an utter fearlessness when it comes to adding twists and changes that keep the properties and plot lines fresh and surprising for even the most dedicated fan. See our page here about it for more information than can reasonably fit here.


    • The Cthulhu Mythos is a famous example of this; professional fan fiction set in his world is not only published, but was also acknowledged and supported by Lovecraft before his death.
      • Speaking of which, showing that this Trope is Older Than They Think, Lovecraft and Robert E. Howard were contemporaries, and Howard's works took place in the same world as Lovecraft's, just a different time period. The proof? In Lovecraft's story "A Shadow of Time", he introduces a character named Cromia, who is described as "a Sumerian chieftain", Sumeria being Conan's homeland and Crom being the deity he is devoted to.
    • C. S. Lewis linked his world to his friend Tolkien's universe in That Hideous Strength.
    • Susannah Clarke's short story The Duke of Wellington Misplaces His Horse connects the universes of her novel Jonathan Strange & Mr Norrell to that of Neil Gaiman's novel Stardust.
      • Hang on, isn't Stardust already implied to be part of the American Gods -verse already too?
    • The Wild Cards books were designed as Shared Universe Anthologies from the ground up.
    • Border Town is a city between the "real world" and Faerie. It was originally created by Terri Windling, but Emma Bull, Will Shetterly, Charles de Lint and several other writers have written stories set there.
    • 1632 was originally to be a one-off novel, but due to favorable fan response went beyond that, later expanding into The Grantville Gazette, one of whose main goals is to give previously unknown authors a way to be published, and paid for their work. Unlike with many anthologies, the contributions from other authors affect the "main" story line works. There are very few aspects that are truly forbidden to these authors, primarily those where it would interfere with the prerogatives of Eric Flint, the series creator.
    • Thieves' World was a dark fantasy Shared Universe created by Robert Asprin in the late 1970s. It had contributors like Poul Anderson, John Brunner and Marion Zimmer Bradley and generated 12 anthlogies of short stories, seven official novels and a bunch of roleplaying adaptations before writing stopped in 1989. It preemptively dealt with Continuity Snarl with a preface framing story about an old timer talking to a new arrival in the city about how one should not believe everything in the stories one hears, as everyone spins the stories to fit their agendas, to make themselves sound more important in a good story, or less to blame in a bad one, and two people telling the same story may have wildly different variations.
    • The universe of the Bolo super-tanks has been shared by everyone from John Ringo to Mercedes Lackey.
    • The Russian Death Zone series is worked on by several known Russian sci-fi authors and is loosely based on the STALKER games. Unfortunately, this tends to create certain lapses in continuity. For example, in Andrei Livadny's novels, the Order is portrayed as a rational group that believes in the existence of an other-dimensional point known as the Node based purely on empirical evidence. In Roman Glushkov's books, they are fanatics spouting religious nonsense about the Holy Node before sacrificing themselves for the cause. It could be explained that these are different members of the Order interpreting their teachings, if they were not using the same characters.
    • The Liavek anthology series- stories by several different authors, set in and around the titular city. Apparently Liavek started out as a RPG invented by Will Shetterly for his writer's group, The Scribblies; they later fleshed out the setting and produced five volumes of short stories (and a few poems). Two of the authors -- John M. Ford and Pamela Dean -- later wrote more stories in the same universe.
    • The Midnight Rose collective, a group of British SF writers, published several shared-universe anthologies in the early 1990s, with settings including Temps (tongue-in-cheek superhero stories) and The Weerde (shape-shifting aliens are the source of all the world's myths and conspiracies). Contributors included Stephen Baxter, Neil Gaiman, Mary Gentle, David Langford, Kim Newman, and Charles Stross.
    • All of Simon R. Green's series appear to inhabit the same universe.

    Live Action TV


    • Older Than Steam: Perhaps the oldest non-mythology example is the Jianghu (literally "rivers and lakes") fantasy world in which most Chinese Wuxia books, films, TV series, etc. are set. Jianghu dates at least to the 14th-century novel Water Margin.
    • Each Dungeons & Dragons campaign setting is its own 'Verse (See the page on D&D for more information), and the associated novels have many different authors, though - like the Star Wars Expanded Universe - the writers usually have to clear their ideas through the universe's owner.
      • Dungeons and Dragons also has all of the settings linked in Planescape and Spelljammer, but those are rarely mentioned as existing except for their own continuities.
        • Given that Urban Arcana is our Earth, only with hidden fantasy elements, the Earth that Forgotten Realms canonically is connected to[1] is probably that Earth. Planescape, at least, has a connection to Urban Arcana via a shared character that namedrops Sigil and has a way to traverse the Shadow that otherwise acts as a boundary between Urban Arcana and the rest of the multiverse.
    • The Warhammer 40,000 universe is shared by a large number of writers; the sheer scale of the setting in both space and time helps avoid continuity problems.
      • In early versions of the background, it was heavily hinted that the Warhammer Fantasy world was part of a planet cut off from the rest of the universe by warp storms, explaining the many shared elements. However, mentioning this nowadays is liable to get you bundled into a van and never seen again.
    • Word of God places Dr. Horrible's Sing-Along Blog, The Tick and the Venture Brothers in the same universe.
    • Spells 'R' Us was started off with Bill Hart's story "A Strangeness at the Frat House" and then became not so much a universe but a single series of the same character in the same errant shop all ending up with customers being transformed into something.

    Video Games

    • Portal shares a universe with Half-Life.
    • The Super Mario and Donkey Kong series exist in the same universe, as shown through Donkey Kong, Diddy, Dixie, and Funky appearing in Mario spin-offs, as well as Mario and Yoshi appearing in Donkey Kong Country 2. Additionally, due to first appearing in Super Mario World and Super Mario Land 2 respectively, the Yoshi, Wario Land, and Wario Ware series are also part of the expanded Super Mario Universe. The entire Shared Universe of Mario, however, is much, MUCH larger.
    • Street Fighter, Final Fight, Saturday Night Slam Masters and Captain Commando take place in the same universe. Rival Schools may also be part of it.
      • A few Final Fight characters (namely Guy, Sodom, Rolento, and Cody) have appeared as fighters in the Street Fighter Alpha series, with stages and endings featuring cameos by other characters. Andore appears in Street Fighter III under the name of "Hugo" with Poison acting as his manager. Both, Guy and Cody returned in Super Street Fighter IV. Additionally, Chun-Li makes a cameo in Stage 1 of Final Fight 2 and the portable versions of Alpha 3 features Maki as an extra character.
      • Haggar appeared in Slam Masters as a wrestler. The U.S. localization refers to him as the "former mayor of Metro City", although the original Japanese storyline actually places the games before Haggar was elected. A couple of Street Fighter characters have cameos in the Slam Masters series (such as Chun-Li, Honda, and Balrog) and the Slam Masters are referenced in Hugo's ending in 2nd Impact.
      • Captain Commando takes place in a futuristic version of Metro City. A sculpt of Mike Haggar is featured in the game as an bonus item, and Ginzu the Ninja is a future successor of Guy in the Bushin style of Ninjutsu.
      • The first Rival Schools features Sakura as a playable character (although, her blood type is different from the one given in the Alpha series). Moreover, the Nekketsu Seisyun Nikki spin-offs has Hinata studying the "Ken Masters style of Karate" and Iinchou/Chairperson learning "Saikyou-Style" through mail. On the other hand, there are a few date discrepancies according to the first game's intro and Sakura's storyline (in which she's yet to meet Ryu, placing the series pre-Street Fighter Alpha 3).
      • While not part of the main Street Fighter continuity, the Arika-developed Street Fighter EX games shares a couple of characters (Allen and Blair) with their independently developed arcade game Fighting Layer.
    • Koei's Warriors Orochi was made to confirm that its series Dynasty Warriors and Samurai Warriors take place in the same universe but the second trailer of Warriors Orochi 3 more or less confirms Koei's other games Warriors: Legends of Troy and Blade Storm: The Hundred Years War due to the presence of Achilles and Jeanne D'Arc. But it also confirms that its business partner Tecmo series Ninja Gaiden and Dead or Alive series take place there due to the presence of Ryu Hayabusa. By extension it might also might also put it in the same universe as Halo due to the Spartan Nicole's presence in Dead Or Alive 4.
    • The Ultima series features references to the Wing Commander series. In Ultima I there were spaceships that in Ultima 7: The Black Gate was explained to be the spaceship of the Kilrathi. As pointed out by Spoony here.
    • Dig Dug, Baraduke (or Alien Sector if you prefer), and Mr. Driller are set in the same world, by virtue of Taizo Hori and Toby "Kissy" Masuyo being the parents of Susumu, Ataru, and Taiyo Hori (the first of the three being The Hero of the Mr. Driller series) and the events of the first Dig Dug being referenced directly in Mr. Driller (the "Dig Dug incident").
    • EVE Online and the upcoming[when?] FPS DUST 514 are part of the same universe... literally. Players will be able to accept contracts and do missions for the player-run companies of EVE Online, and even form their own corporations that EVE Online players will be able to join.
    • The Dead or Alive and Ninja Gaiden series both take place in the same universe, complete with having characters originating in one becoming plot-integral in the other. Of course, characters will change looks to match the art style of the respective games.
    • The presence of both Seath the Scaleless and Patches the Hyena seem to indicate that Dark Souls shares the same world and universe as the Kings Field series and Demon's Souls.
    • Broderbund Software tried to work the Bungeling Empire into most of its early 1980s action games. Choplifter and Lode Runner had it All There in the Manual; Raid on Bungeling Bay had it in the title but wasn't really a sequel to anything.
    • Space Harrier is set in the Fantasy Zone; several Fantasy Zone games reference it to various degrees. The culmination of this was the unreleased crossover game Space Fantasy Zone.

    Web Comics

    Web Original

    Western Animation

    1. And hilariously so: among other things, the first edition of the Forgotten Realms Campaign Setting was canonically written with the help of Elminster