Fighters Gigamix

Arcade Mode
the player chooses 2 characters and goes through 8 stages in which the player goes through the chosen character's stories.

Score Attack Mode
the player chooses 2 characters and goes through 8 stages in which the player needs to get the highest score possible.

Time Attack Mode
the player chooses 2 characters and goes through 8 stages that the player needs to finish in the shortest time possible.

Survival Mode
the player chooses 2 characters and goes through ? stages in which the player fights every character in the game.

Versus Mode
the players choose 4(2 characters each) characters and fight each other.

Plot
after 2 decades of waiting for an Eternal Champions reboot and being jealous of Killer Instinct gettign a reboot, the Eternal Champion decided that enough is enough and hired other characters from forgotten fighting games to help him kidnap other characters from forgotten fighting games and frame the mainstream fighting games characters for said kidnappings.

Street Fighter

 * Ryu
 * 1) Ken Masters
 * 2) Chun-Li
 * 3) Guile

Mortal Kombat

 * 1) Scorpion
 * 2) Sub-Zero
 * 3) Sonya Blade
 * 4) Jax Briggs
 * 5) Liu Kang

The King of Fighters

 * 1) Kyo Kusanagi
 * 2) Iori Yagami
 * 3) Mai Shiranui
 * 4) Terry Bogard

Killer Instinct

 * 1) Jago
 * 2) Fulgore
 * 3) B. Orchid
 * 4) T.J. Combo

Tekken

 * 1) Kazuya Mishima
 * 2) Jin Kazama
 * 3) Nina Williams
 * 4) Paul Phoenix
 * 5) Yoshimitsu

Dead or Alive

 * 1) Kasumi
 * 2) Ayane
 * 3) Ryu Hayabusa
 * 4) Helena Douglas
 * 5) Tina Armstrong

Guilty Gear

 * 1) Sol Badguy
 * 2) Ky Kiske
 * 3) Millia Rage
 * 4) Zato-1
 * 5) Axl Low

Blazblue

 * 1) Ragna the Bloodedge
 * 2) Jin Kisaragi
 * 3) Noel Vermillion

Other(Unlockable)

 * 1) Akira Yuki(Virtua Fighter)
 * 2) Pai Chan(Virtua Fighter)
 * 3) Jacky Bryant(Virtua Fighter)
 * 4) Goh Hinogami(Virtua Fighter)
 * 5) Siegfried Schtauffen(Soulcalibur)
 * 6) Sophitia Alexandra(Soulcalibur)
 * 7) Heishiro Mitsurugi(Soulcalibur)
 * 8) Nightmare(Soulcalibur)
 * 9) Haohmaru(Samurai Showdown)
 * 10) Nakoruru(Samurai Showdown)
 * 11) Galford(Samurai Showdown)
 * 12) Genjuro Kibagami(Samurai Showdown)
 * 13) Eiji Shinjo(Battle Arena Toshinden)
 * 14) Kayin Ahmo(Battle Arena Toshinden)
 * 15) Ellis(Battle Arena Toshinden)
 * 16) Vermillion(Battle Arena Toshinden)
 * 17) Morrigan Anesland(Darkstalkers)
 * 18) Dimitri Maximoff(Darkstalkers)
 * 19) ?(Darkstalkers)
 * 20) ?(Darkstalkers)
 * 21) ?(Rival Schools)
 * 22) ?(Rival Schools)
 * 23) ?(Rival Schools)
 * 24) ?(Rival Schools)
 * 25) ?(Slam Masters)
 * 26) ?(Slam Masters)
 * 27) ?(Slam Masters)
 * 28) ?(Slam Masters)
 * 29) Genghis Bahn(Fighting Vipers)
 * 30) Candy(Fighting Vipers)
 * 31) Grace(Fighting Vipers)
 * 32) Mahler(Fighting Vipers)
 * 33) Kaede(The Last Blade)
 * 34) ?(The Last Blade)
 * 35) ?(The Last Blade)
 * 36) Shinnosuke Kagami(The Last Blade)
 * 37) Yusako Kudo(Last Bronx)
 * 38) Joe Inagaki(Last Bronx)
 * 39) The Executioner(Mace)
 * 40) Lord Deimos(Mace)
 * 41) Keith Wayne(Power Instinct)
 * 42) ?(Power Instinct)
 * 43) ?(Power Instinct)
 * 44) Ume & Tane Gouketsuji(Power Instinct) - Sub-Bosses alongside Dr. Kiln
 * 45) Bad Mr. Frosty(ClayFighter)
 * 46) ?(ClayFighter)
 * 47) ?(ClayFighter)
 * 48) Dr. Kiln(ClayFighter) - Sub-Boss alongside Ume & Tane
 * 49) ?(Eternal Champions)
 * 50) ?(Eternal Champions)
 * 51) ?(Eternal Champions)
 * 52) Eternal Cahmpion(Eternal Champions) - Final Boss
 * 53) Hanzo Hatorri(World Heroes)
 * 54) Fuuma Kotaro(World Heroes)
 * 55) Janne D'Arc(World Heroes)
 * 56) Neo Dio(World Heroes) - True Final Boss
 * 57) Yugo Ogami(Bloody Roar)
 * 58) Alice Tsukagami(Bloody Roar)
 * 59) Long Jin(Bloody Roar)
 * 60) Xion(Bloody Roar) - True Final Boss

Stages
?

Soundtrack

 * Ume & Tane and Dr.Klin theme
 * Eternal Champion theme
 * Neo Dio and Xion theme
 * Ume & Tane and Dr.Klin theme
 * Eternal Champion theme
 * Neo Dio and Xion theme
 * Ume & Tane and Dr.Klin theme
 * Eternal Champion theme
 * Neo Dio and Xion theme
 * Ume & Tane and Dr.Klin theme
 * Eternal Champion theme
 * Neo Dio and Xion theme
 * Ume & Tane and Dr.Klin theme
 * Eternal Champion theme
 * Neo Dio and Xion theme
 * Neo Dio and Xion theme

Cheats

 * Fight hidden characters in Stage 7
 * Fight Virtua Fighter characters - fail to mee tany of the requirements below
 * Fight Soulcalibur characters
 * Fight Samurai Showdown characters
 * Fight Darkstalkers characters
 * Fight Rival Schools characters
 * Fight Slam Masters characters
 * Fight Battle Arena Toshinden characters
 * Fight Fighting Vipers characters
 * Fight The Last Blade characters
 * Fight Last Bronx characters
 * Fight Mace characters
 * Fight True Final Boss in Stage 10
 * Fight Neo Dio
 * Fight Xion
 * Aqquire Characters from The Krypt