The ''Dissidia'' series is to ''Franchise/FinalFantasy'' as ''VideoGame/SuperSmashBros'' is to Creator/{{Nintendo}}. It's a MassiveMultiplayerCrossover [[MascotFighter Mascot Fighting Game]] for the [[RunningGag bone-breakingly popular]] ''Final Fantasy'' series, bringing together heroes and villains from across the first thirteen games to battle it out for the fate of the multiverse. The first game, ''Dissidia Final Fantasy'', received a prequel, ''Dissidia 012'' (read as "Dissidia Duodecim"), in March 2011, featuring the whole cast of the original plus some more characters, a remake of the first game with a world map, and gameplay changes.

The story goes that the God of Discord, Chaos, and the Goddess of Harmony, Cosmos ([[OriginalGeneration a new character]]), are waging war by [[DivineChessboard summoning champions]] from other worlds to a new world. The champions are tasked to fight until one of the two gods is victorious, at which point they will be freed to return home, but there's far more to the war than the mortals have been told, and the war isn't as divinely important as they're lead to believe. The game's story reveals that the war between the gods is part of a GroundhogDayLoop, with LaserGuidedAmnesia inflicted on the losers before they awaken to fight again after one side loses. Thus the heroes seek to carry out Cosmos's plan to bring about a true end to the cycles and stop the plans of Chaos's warriors to exploit the cycle for their own ends. Bonus storylines reveal the nature of the two gods, how the war came to start, and why.

The game features hybrid-RPG elements, your characters gain levels and learn new abilities, and getting them items and equipment is a core element of gameplay. Specifically, the game uses variations on the ''VideoGame/FinalFantasyIX'' ability learning system, ''VideoGame/VagrantStory'''s timed attacks, scattering power orbs in battle like in ''Franchise/KingdomHearts'', map movement that resembles the system from ''VideoGame/FinalFantasyTactics'', and ''Anime/FinalFantasyVIIAdventChildren'' style [[ArtMajorPhysics physics]].

The [[Characters/DissidiaFinalFantasy playable characters]] appearing in the game are the following:
* '''[[Characters/DissidiaFinalFantasyWarriorsOfCosmos Warriors of Cosmos:]]''' [[VideoGame/FinalFantasyI Warrior of Light]], [[VideoGame/FinalFantasyII Firion]], [[VideoGame/FinalFantasyIII Onion Knight]], [[VideoGame/FinalFantasyIV Cecil Harvey]], [[VideoGame/FinalFantasyV Bartz Klauser]], [[VideoGame/FinalFantasyVI Terra Branford]], [[VideoGame/FinalFantasyVII Cloud Strife]], [[VideoGame/FinalFantasyVIII Squall Leonhart]], [[VideoGame/FinalFantasyIX Zidane Tribal]], [[VideoGame/FinalFantasyX Tidus]], and [[VideoGame/FinalFantasyXI Shantotto]].
* '''[[Characters/DissidiaFinalFantasyWarriorsOfChaos Warriors of Chaos:]]''' [[VideoGame/FinalFantasyI Garland]], [[VideoGame/FinalFantasyII The Emperor]], [[VideoGame/FinalFantasyIII Cloud Of Darkness]], [[VideoGame/FinalFantasyIV Golbez]], [[VideoGame/FinalFantasyV Exdeath]], [[VideoGame/FinalFantasyVI Kefka Palazzo]], [[VideoGame/FinalFantasyVII Sephiroth]], [[VideoGame/FinalFantasyVIII Ultimecia]], [[VideoGame/FinalFantasyIX Kuja]], [[VideoGame/FinalFantasyX Jecht]], and [[VideoGame/FinalFantasyXII Gabranth]].
* '''[[Characters/Dissidia012FinalFantasyWarriorsOfCosmos Newcomers]] in ''012'':''' [[VideoGame/FinalFantasyIV Kain Highwind]], [[VideoGame/FinalFantasyV Gilgamesh]], [[VideoGame/FinalFantasyVII Tifa Lockhart]], [[VideoGame/FinalFantasyVIII Laguna Loire]], [[VideoGame/FinalFantasyX Yuna]], [[VideoGame/FinalFantasyXI Prishe]], [[VideoGame/FinalFantasyXII Vaan]], [[VideoGame/FinalFantasyXIII Lightning]] and lastly, [[spoiler:[[OneWingedAngel Feral Chaos]]]]. All of them have their own character sheet except for [[Characters/DissidiaFinalFantasyOther the latter]].
* '''[[Characters/DissidiaFinalFantasyOther Additional NPC Assist Characters and Other characters]]''': [[VideoGame/FinalFantasyVII Aerith Gainsborough]] (AssistCharacter only), [[OriginalGeneration Cosmos]], [[VideoGame/FinalFantasyI Chaos]].

The campaign mode features storylines for the Cosmos-aligned characters that [[RashomonStyle interact]] to form a much larger storyline, as well as a simple Arcade Mode, Quick Battle and a Duel Colosseum. Combat in ''Dissidia'' revolves around the "Bravery" system, which is an elaboration on the BreakMeter idea. You have two kinds of attacks, Bravery and HP, and reducing your enemy's BRV to zero will (of course) Break him. What's unusual about BRV is that yours goes ''up'' as you damage your opponent's, and if you Break him you get an additional bonus. Plus, HP attacks do damage ''equal to your current BRV'', with the caveat that once you land one your BRV drops to zero and has to go through a short recovery process. (Landing a second HP attack during this time will do no damage but will regenerate you to full BRV on the spot.) Long story short, if you build up enough Bravery and put your opponent in Break, a OneHitKill is very possible... and if you miss, an unexpected reversal is just as viable.

Each character also has their own fighting style, which take different angles on the synergy between the two types of attacks: Squall has a powerful BRV game but slow HP attacks, while the Onion Knight has weak BRV attacks but can quickly chip away at your HP directly. Still other characters do completely different things with their Bravery games--Shantotto's specializes in StandardStatusEffects BRV attacks to stun the opponent for her HP combos, while most of the Emperor's Bravery attacks aren't meant to actually hit the opponent so much as set them up to fall into his DeathTrap-based HP attacks. There's also [[SummonMagic Summons]] that modify Bravery in different ways, or mess with the opponent's Summon. Not to mention the air vs. ground games, the different effects of the stages... the short version is, this is an intricate game.

Finally, there is a LimitBreak mechanic, as you'd expect from the franchise of the TropeCodifier. As you and the opponent land hits on each other, glowing blue/white orbs called EX Force appear in the air, and now and then an EX Core will appear on the stage and absorb all the stray EX Force floating around it. These fill the EX Gauge, and when it gets full you can go into a SuperMode called "EX Mode," where your character transforms and gains an increase to their damage output in the form of more critical hits, as well as numerous character-specific abilities like gliding in the air, landing more hits when you attack, special super-attacks, and so forth. And then when you land an HP attack in EX Mode, the ''real'' Limit Break begins, called an "EX Burst." Usually based on the character's strongest attack in their original game, EX Bursts are flashy cinematic attacks where you use ActionCommands to power up your attack (tap a button to fill a power meter, execute a sequence of button commands, etc), landing more hits of Bravery damage as you build up to a powerful HP attack. EX Bursts more often than not turn out to be {{Finishing Move}}s due to the huge amounts of damage they deal.

In addition to ExperiencePoints and gil, you also get TechPoints for adding mastering the abilities in your character's PointBuildSystem, and "Player Points" used for buying yourself new bonuses, gameplay options, characters and etc. Finally, the game has RPGElements, meaning that almost any boss is surmountable with sufficient LevelGrinding.

Aside from the gameplay and story, the game features ''countless'' allusions to the franchise. There are dozens of {{Continuity Nod}}s and {{Mythology Gag}}s, the developers have clearly ShownTheirWork to properly represent the cast and their games of origin, there's quite a bit of LampshadeHanging and MemeAcknowledgment, and the storyline is also chock full of allusions to previous games, from story parallels to line dropping. In short, the game doubles as a love letter to twenty years of ''Final Fantasy'' and the fandom that made it so famous. Being that it ''is'' a fighting game, players also get to have fun [[VideoGameCrueltyPotential beating up their most hated characters with their most beloved]], and can play out match-ups fans have argued for years. You want to see Kefka and Sephiroth duke it out, or Cloud and Squall have a duel? It's all yours.

The future of the series was somewhat confused for a number of years; Creator/TetsuyaNomura [[WordOfGod himself said]] [[http://andriasang.com/comu2a/nomura_dengeki_interview/ that Dissidia 012 would be the last entry in the series,]] [[ExactWords at least "in its current form"]]; that is, a FightingGame. Instead, '''''VideoGame/TheatrhythmFinalFantasy''''' was created, marking the series' GenreShift ''to a RhythmGame''. However, other influential team members, including producer Ichiro Hazama and series director Mitsunori Takahashi, [[http://www.siliconera.com/2013/11/18/dissidia-theatrhythm-designed-introduce-final-fantasy-new-generation-fans/ went on record]] [[http://www.siliconera.com/2014/04/08/square-enix-final-fantasy-x-3-state-final-fantasy-xv-dissidia/ as saying]] that they'd like to do a third fighting game-style ''Dissidia'' title, due to the series' popularity (and resulting profitability) with new fans. This eventually manifested itself in a third installment announced in February 2015, [[RecycledTitle simply titled]] '''''VideoGame/{{Dissidia Final Fantasy|2015}}'''''. Meeting long-time fan requests, the 2015 iteration of ''Dissidia'' is designed for ''arcade'' use, with a UsefulNotes/PlayStation4 port, ''Dissidia: Final Fantasy NT'', set to be released in 2018. This new version is [[ContinuityReboot a reboot of the franchise]], and introduces two new gods who are [[{{Expy}} expies]] of Cosmos and Chaos.

''Dissidia'' has no relation to [[VideoGame/{{Ehrgeiz}} the other]] ''[[VideoGame/{{Ehrgeiz}} Final Fantasy]]'' [[VideoGame/{{Ehrgeiz}} fighting game]].

Has character sheets, as well as pages for [[MythologyGag/DissidiaFinalFantasy Mythology Gags]] and [[FoeYay/DissidiaFinalFantasy Foe Yay]].


!!''Dissidia'' and ''Dissidia 012'' contain examples of:
* DissidiaFinalFantasy/{{Tropes A To M}}
* DissidiaFinalFantasy/{{Tropes N To Z}}