''Neo Geo Battle Coliseum'' is an {{Creator/SNK}} crossover fighting game similar to its flagship series ''VideoGame/TheKingOfFighters'', but it features several characters who have not appeared in ''KOF'' canon (such as those from ''VideoGame/SamuraiShodown'', ''VideoGame/TheLastBlade'' and ''VideoGame/WorldHeroes''). It was released in 2005 on Sammy's Atomiswave arcade system, and subsequently on the UsefulNotes/PlayStation2 and UsefulNotes/XboxLiveArcade (last one as [[VideoGameRemake HD remake]]).

The game takes place in the year 2017, with a tournament being held by the leader of the WAREZ corporation, who seeks to find the strongest fighter in the Neo Geo universe and defeat him/her, paving the way for him to install himself as the supreme ruler of the world. In response, the federal government dispatches two of its brightest secret agents, Yuki and Ai, to investigate[[note]]which eventually defeat WAREZ, to be said[[/note]].

''NGBC'' utilizes a 2-on-2 tag battle system, and teammates can tag in and out at will. There are benefits to allowing your partner to rest for a while, such as RegeneratingHealth, a regenerating power meter, and the ability to use an attack that stops your opponents from regaining their health (and in turn, boosting your attack power for a short time). Arcade mode functions differently than most fighting games. Instead of a set number of opponents to fight, you are given five minutes to defeat as many opponents as possible. Once the time expires, you then face one of four different {{Final Boss}}es, depending on your performance.
!! Playable Characters:
* [[OriginalGeneration Original to this game]]: Yuki and Ai
* ''VideoGame/TheKingOfFighters'': Kyo[[note]][=KOF99=] outfit[[/note]], Iori, K', Shermie
* ''VideoGame/FatalFury'': Terry[[note]]In his ''Mark of the Wolves'' outfit.[[/note]], Geese, Mai, Kim, Tung Fu Rue, the Jin brothers (Chonrei and Chonshu), Rock, Hotaru
* ''VideoGame/ArtOfFighting'': Ryo[[note]]As "2nd Mr. Karate" from ''VideoGame/BurikiOne''.[[/note]], Robert[[note]]New design.[[/note]], Mr. Big, Lee
* ''VideoGame/SamuraiShodown'': Haohmaru, Nakoruru, Genjuro, Shiki, Asura
* ''VideoGame/TheLastBlade'': Kaede[[note]]Awakened form.[[/note]], Moriya, Akari, Washizuka
* ''VideoGame/WorldHeroes'': Hanzo, Fuuma, Mudman
* ''VideoGame/AggressorsOfDarkKombat'': Kisarah Westfield
* ''VideoGame/KingOfTheMonsters'': Cyber Woo
* ''VideoGame/MetalSlug'': Marco and Mars People.
* ''VideoGame/{{Athena}}'': Athena.

!! Bosses:
* [[OriginalGeneration Original to this game]]: Mizuchi[[note]]A [[CloningBlues clone]] of ''KOF'''s {{Orochi}}[[/note]] and Goodman.
* ''VideoGame/WorldHeroes'': NEO-DIO.
* ''VideoGame/FuunSeries'': Shishioh/King Lion.
!! Tropes used in ''VideoGame/NeoGeoBattleColiseum'':
* BatterUp: Ai's Batting Hero attack.
* BeamSpam: Mizuchi can throw projectiles at you from any angle, from any ''position''.
* BreakoutCharacter: Ai also appears outside this game as part of ''Days of Memories'' DatingSim series.
** And her, Yuki and Goodman appears in ''SNK vs. Capcom: Card Fighters Clash DS'' as Character (Ai, Yuki) and Action (Goodman) cards.
* TheCameo: Apart of the big roster full of {{Unexpected Character}}s, also, there're cameos from other games in the characters' moves:
** Atomic Guy from ''VideoGame/KingOfTheMonsters 2'' as the final transformation of Yuki (hyper move made with Ai as companion), a human-size version of him in a similar way than Cyber-Woo from the same game.
** And about Yuki, the charged version of ''Submarine Screw'' he can transforms into Duke Edwards from ''Burning Fight'' and executing his original signature move (normal version is InNameOnly).
** Neo Poke-kun from UsefulNotes/NeoGeoPocket's ''Gambare Neo Poke-kun'' and {{Mascot}} of this handheld console appears as Ai's mascot who accompany her in many moves and poses.
** Also Ai can summon ''VideoGame/{{Tetris}}'' pieces falling to the ground as one of her hyper moves.
** Monsters in Akari's ''100 Demons' Night'' hyper move: Gen-an Shiranui, Earthquake, Gandara, Nicotine Kafuin and {{Youkai}} Kusaregedo from ''VideoGame/SamuraiShodown'' series; Wild/Orochi Iori and Unknown[[note]][[Characters/ArtOfFighting Ryuhaku Todoh]] from ''KOF 2000'''s Another Strikers[[/note]] from ''VideoGame/TheKingOfFighters'' series, Honki ni Natta Mr. Karate from ''VideoGame/SNKVsCapcomSVCChaos'' and one of [[Characters/FatalFury Sokaku Mochizuki]]'s spirits from ''[[VideoGame/FatalFury Real Bout: Fatal Fury]]'' series.
** Joe Kusanagi, TheProtagonist of ''VideoGame/AggressorsOfDarkKombat'' appears in one of Kisarah's hyper moves.
** In one of Neo Dio's hyper moves, he summons Geegus (another ''VideoGame/WorldHeroes''' FinalBoss) to attack the opponent with him, called as "Geo Geegus"[[note]]who also appears in another SNKP game: ''Neo Geo Heroes: Ultimate Shooting''[[/note]].
** And not to count the characters in backgorunds, which are many more.
* {{Expy}}: SNK deliberately expied ''themselves'' with Goodman, a blatant TakeThat to Igniz from [[DorkAge the Aruze/Eolith days]].
* HandbagOfHurt: Kisarah fights by hitting people with her backpack.
* IKnowMortalKombat: All of Yuki and Ai's moves are named after old SNK games.
* OriginalGeneration: Yuki, Ai, and the TrueFinalBoss Goodman.
* SecretCharacter: Athena (the princess from her own game; not to be confused with ''KOF'' regular Athena Asamiya) and the [[VideoGame/MetalSlug Mars People]].
* ShoutOut:
** The backgrounds and special move names are littered with references, not just to the series represented, but to other much more obscure SNK games such as ''Robo Army'', ''Alpha Mission II'' or ''Top Hunter''.
** [[http://www.youtube.com/watch?v=VNbptNDFcK4 Yuki is not boy.]][[note]]"I'm not [[GameBoy BOY]]" was one of the advert catchphrases for the UsefulNotes/NeoGeoPocketColor.[[/note]]
** Nakoruru's win quote against any of the [[PlayingWithFire fire users]] refers to [[http://en.wikipedia.org/wiki/Smokey_Bear Smokey Bear]] of all things.
--> '''Nakoruru:''' "Uh, didn't the bear tell you? Only you can prevent forest fires, so watch those flames."
* SNKBoss: Expected. After all, SNK is the TropeNamer. Notoriously, all ''four'' final bosses are ridiculously powerful and ridiculously ''cheap''.
* SpiritualSuccessor: This is basically the sequel to ''SVC Chaos'', minus the Capcom characters, but with better character balance and a tag team format.
* TakeThat: [[DigitalPiracyIsEvil WAREZ is named after a term for piracy.]] SNK blames piracy for it's bankruptcy in the past.
* YourSizeMayVary: Cyber Woo from ''VideoGame/KingOfTheMonsters 2'' was a [[{{Kaiju}} building-sized]] [[HumongousMecha robotic]] Film/KingKong. This game's version is relatively human-sized and controlled by a human.
** Also appears Atomic Guy from the same game, in the form of Yuki's hyper transformation, in a human-like size.