Thunder Force

"Legend of Wings continue."

A Shoot'Em Up series by Technosoft, which started with an obscure Japanese computer title in 1983 as a multi-direction overhead view shooter. It eventually become a side-scrolling shooter in the third installment, famous for its loads of Awesome Music.

The Excuse Plot puts player in shoes of the Galaxy Federation's pilot in the Fire Leo starfighter against the overwhelming cybernetic ORN Empire. Thunder Force V changes the focus to Earth when Earthmen discover the wreck of Thunder Force IV's Fire Leo (Rynex) and reverse engineer it. The Guardian, an AI designed to study Vasteel (as Rynex comes to be known), however, goes haywire on humanity, but not before they create their own Vasteel starfighter. Thunder Force V is also known for having more story than the previous games, which ties together the events of IV. The sixth installment was trapped in Development Hell for a decade, but eventually released.

The Thunder Force series spans six games:
 * Thunder Force (A variety of PC platforms, 1983) -- The first game in the series, and the least well-known. Comprised entirely of overhead stages.
 * Thunder Force II (Sharp X68000, 1988) -- Alternates between overhead sections and side-scrolling sections. Rereleased on the Genesis as Thunder Force II MD, with one less overhead-sidescroller pair and more balanced difficulty. MD itself was ported to Saturn via Thunder Force Gold Pack 1.
 * Thunder Force III (Genesis/MD, 1990) -- Completely does away with overhead sections. Ported to the Saturn via Gold Pack 1.
 * Thunder Force AC (Arcade, 1990) -- An arcade port of III (unusual in that ports generally go from arcade to console and not the other way around), but with altered 4th and 5th stages. Ported to the Saturn via Thunder Force Gold Pack 2, with an autofire feature that was not present in the original version.
 * Thunder Spirits (SNES, 1992) -- A SNES port of AC (making it a port of a port), with a new stage 5 and stage 8. The least-known of the three versions of TFIII, despite being on the most popular platform of the three platforms it appeared on.
 * Thunder Force IV (Genesis/MD, 1992) -- Released as Lightening (sic) Force: Quest for the Darkstar in North America. Ported to the Saturn via Gold Pack 2, with less slowdown and III's player ship as an unlockable ship.
 * Thunder Force V (Saturn, 1997) -- The first game in the series with three-dimensional graphics, and introduces the Over Weapon system, in addition to expounding on the plot of IV. Ported to the PlayStation as Thunder Force V: Perfect System, with less slowdown (but reduced visuals) and some Omake content.
 * Thunder Force VI (PlayStation 2, 2008) -- A whopping 11 years after the initial release of V and one failed attempt to bring it to the Dreamcast. Due to the low quality-to-anticipation ratio, it was not well received.

The Thunder Force series contains examples of:

 * AI Is a Crapshoot : Main plot of V. Humanity built a super computer named Guardian to study the wreckage of Rynex, the 4th game's Fire Leo. It then built a large fleet of starships based on the data. Then Guardian's AI damper program mysteriously disappeared and it turned against humanity with said fleet.
 * Always Accurate Attack: The Free Range in V worked like this- anything entering the green wireframe area would be in for a world of (unavoidable) hurt.
 * Artificial Human : Cenes Crawford, Player Character of V is actually a clone of a dead Ace Pilot. Same as C CTNs C of VI.
 * Attack Drone: The CLAWs for the Fire Leo series.
 * Awesome but Impractical: In V and VI you can make your ship do rolls. It does nothing but look stylish
 * Battleship Raid : The Cerberus in III and VI
 * Big Bad: Chaos/Khaos is pretty impressive one. After harassing The Federation for two games, we've finally blown it up in the third. Only to find it program was transferred to secondary system in the forth. And even reveal to be the
 * Bittersweet Ending: Thunder Force IV has
 * V has
 * Blind Idiot Translation: Many, many examples.
 * "This is Exceliza, I want to fly now!"
 * "Mission accomplished. I'll be right back."
 * The boss subname for A3 in V is often accused of this because it sounds odd at first ("It died three times, and was reborn twice"), until the player realizes A3 transforms into three different modes during the fight.
 * Boring but Practical: Twin Shot and Back Fire, the only weapons you don't lose when you die.
 * Boss Dissonance: Many bosses in III die within seconds of exposure to your weapons, especially the Sever. In contrast, the stages themselves have many deathtraps that demand twitch reflexes and R-Type-style memorization.
 * Boss Subtitles: V and VI
 * Convection, Schmonvection: The fire planet levels throughout the series.
 * Cool Starship: The Fire-Leo series for the Galactic Federation and the RVR series for Earth.
 * Crosshair Aware: The Sky Raid stage in IV
 * Death Is Cheap: Subverted in V. The reason why Cenes Crawford can afford to effectively "respawn" in a new body again and again is because of technology reverse-engineered from Vasteel, which is in turn reserved for the best pilots Earth had to offer.
 * Death Is a Slap on The Wrist: The default ship in VI doesn't lose its weapons when you die.
 * Deconstruction Game: To a degree, V. Given the premise of a One Man Army going up against a rogue AI menace.
 * Excuse Plot: Most of the games, though from IV onwards it becomes more fleshed out.
 * Every Ten Thousand Points: The series is known for cranking out tons of extends.
 * Evil Counterpart :
 * Fallen Hero: The player's ship in IV, "Rynex", comes back in V as a Sequential Boss that you have to fight against and destroy.
 * Fan Sequel: Broken Thunder, released after V and before VI. The good news: Hyakutaro Tsukumo worked on the soundtrack. The bad news: It was so ill-received that it is theorized that Tsukumo's involvement with it was why he was left out of Thunder Force VI's soundtrack.
 * Fetus Terrible: The ORN Emperor in VI is an extremely ugly and monstrous infant with 3 eyes and varying number of irises in each of them. Apparently, the design was lifted from a character from a manga the project director had once drawn.
 * Final Boss Preview: IV had ORN Faust at the end of the Battleship Raid level. Your team of ships try to destroy it and get their asses completely handed to them, forcing the remaining members of your squad to resort in giving you the Mid-Season Upgrade. Thankfully, you get your revenge in the final level.
 * For Massive Damage: Many of the bosses in the series requires you hitting a weakpoint
 * Genre Shift: Across two games; Thunder Force II adds some side-scrolling areas to go with TF1-style overhead areas, and Thunder Force III does away with overhead areas completely.
 * Gratuitous Foreign Language: Two in Thunder Force VI--an obscure and obsolete offshoot of Chinese called Tangut, and Mongolian.
 * Harder Than Hard: "Very Hard" in Thunder Force II for the Sharp X68000, "Mania" in III, and "Maniac" in IV and VI.
 * Hollywood Tactics: Lampshaded in V.
 * Homage: Some of the boss names in Thunder Force V: Deep Purple, Iron Maiden, and A3 (for Alabama 3).
 * Hopeless Boss Fight: The boss for stage 5 in Thunder Force IV
 * I Let You Win:  in Thunder Force V. Cenes Crawford  even lampshades this by stating that had it not done so, the odds of just surviving those battles wasn't even in single digits.
 * Human Aliens: The Galactic Federation seems to be made of this, judging from the cutscenes seen in IV. Averted in V as it's set on Earth.
 * Internal Homage: Thunder Force VI has many references to past games in the series. Perhaps too many.
 * It's Short, So It Sucks: One of the main reasons Thunder Force VI wasn't so well received.
 * It's Up to You : ORN's forces are so much greater than the Galaxy Federation's that if the Fire Leo fails, their regular forces won't stand a chance.
 * Subverted in IV where other Galactic Federation fighters team up with you to take on the Cerberus battleship before the trope gets played straight in the boss fight immediately following and for the rest of the game.
 * Subverted in V in that your character leads a squad of RVR-01 Gauntlets (named "Thunder Force", incidentally). Played straight later on as only the protagonist goes off to space following the battle at Babel; this is justified in that only one RVR-02 Vambrace was completed in time and that Cene Crawford's remaining squadmates drew straws.
 * Justified Extra Lives : Thunder Force V explained it as a cloning system called "Circulate Death"
 * Leitmotif: And the Wind Blew All Day Long for Styx, Lightning Strikes Again for Rynex, and Beginning of War for Vambrace.
 * Lethal Lava Land: The fire planet levels throughout the series
 * Luckily, My Shield Will Protect Me
 * Mid-Season Upgrade : The player's RVR-01 Gauntlet upgrades to the RVR-02 Vambrace in V, which has superior weapons. As well as the Brigandine module, a super durable part that supplies unlimited use of Secondary Fire. Although the Brigandine only lasts for one stage.
 * Occurs again in VI. If player chooses the Phoenix fighter, it will become the Syrinx in last stage. For Brigandine, it only appear in intro movie.
 * Also happens in IV where the Rynex starts off functionally similar to the Styx, but at the halfway point it gets fitted with the Thunder Sword and gains spherical CLAW drones that serve as capacitors for the Thunder Sword.
 * Multiple Endings: IV just changes what song plays during the ending depending on the difficulty, but V's ending is decided by whether you beat the final boss fast enough, and VI has three endings depending on what ship and difficulty you chose and whether you used a continue.
 * Nintendo Hard: Thunder Force II. Especially the X68000 version.
 * One-Hit-Point Wonder: Your fighter, though three more hitpoints are generally added with the shield power-up.
 * One-Winged Angel: Gargoyle Perfect in VI
 * Player Mooks: You can unlock the Rynex-R, the main fighter of the Galactic Federation, in VI
 * Precision F-Strike: In Thunder Force II, when you lose your last life, the robo-voice exclaims "Shit!".
 * Raising the Steaks: Iron Maiden from V is an undead animal of sorts (complete with flies, rotting flesh and blood). Its description? "It was dead, but alive at the same time".
 * Real Time Weapon Change
 * Recurring Boss: Gargoyle starting with III, and ORN Faust in VI
 * Redshirt Army: The Galactic Federation in IV and VI.
 * Robo Speak: Any time you collect a weapon power-up.
 * Roboteching: The Hunter weapon. Your ship shoots out blue energy balls of doom that home in on the enemies.
 * Sequential Boss: Many of them. Of note is Armed Armament Arm from V, who has three different forms. Same applies to UNKNOWN II, the Final Boss.
 * Single Biome Planet : The sole exception is V which occurs on Earth. The ocean planet in VI is justified, it's post-global warming world and you will get pass the submerged city at one point. The jungle is really an abandoned space colony, with overgrowth forest took over residental area.
 * Space Zone: VI plays with this by having the background move around with no effect on gameplay at times.
 * Super Title 64 Advance: The PlayStation port of Thunder Force V was called Thunder Force V: Perfect System.
 * Surprisingly Good English: All the English in V was there in the Japanese version as well. It kinda explains why the Guardian sounds slightly "off" compared to a native speaker.
 * Theme Naming: The ship names: Styx, Rynex, Syrinx as well as the Gauntlet, Vambrace and Brigandine
 * Transforming Mecha : A3 (Armament Armed Arm) and Guardian's Knight from V and B3 (Barbaric Berserk Beast) from VI
 * Unstable Equilibrium: From III onwards, dying takes away your current weapon. This can lead to situations in which you avoid using the most effective weapon for the situation, lest you die and lose it.
 * Video Game 3D Leap: As a presentation upgrade starting with V
 * Video Game Lives
 * Wave Motion Gun : The Rynex's Thunder Sword
 * What?: The name of the BGM for the second half of Stage 1.