Groove Adventure Rave - Fighting Live - Platform: Gamecube

Fight as Reina
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Press Up(2), Down(2), Left, Right, Left, Right, B, A when "Press 
Start Button" appears at the title screen. An announcement will 
confirm correct code entry. Reina will be unlocked in free and 
versus modes.

Fight as Aniki
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Successfully complete story mode as Musica to unlock Aniki in 
free and versus modes. 

Fight as Beast King
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Successfully complete story mode as Haru under the hard 
difficulty setting using no continues. Defeat the Beast King 
to unlock him.

Fight as Gale
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Successfully complete story mode as Shuda to unlock Gale in 
free and versus modes. 

Fight as King
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Successfully complete story mode as Haru to unlock King in 
free and versus modes. 

Fight as Outlaw
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Successfully complete free mode in a 2-on-1 setting as Aniki 
under the hard difficulty setting.

Fight as Poosya
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Successfully complete story mode as Elie to unlock Poosya in 
free and versus modes. 

Fight as Sieghart
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Successfully complete story mode as Go to unlock Sieghart in 
free and versus modes. 

Alternate costumes
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Successfully complete 3-on-1 free mode as Haru, Elie, or Musica 
under the hard difficulty setting. Select story, free, or versus 
mode, then hold L + R while selecting that same fighter. Keep the 
buttons held until the match starts. 

Story edit mode
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Successfully complete story mode as Musica, Shuda, Elie, Haru, 
and Go.

2-on-1 mode
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Successfully complete story mode with all five starting characters. 
You can now set a free mode game to fight against two opponents.

3-on-1 mode
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Unlock Outlaw and Beast King. You can now set a free mode game to 
fight against three opponents.

Character gallery
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Successfully complete story or free modes with various characters 
to unlock their entry in the graphics gallery.

Voice tests
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Successfully complete story mode with various characters to unlock 
another fighter's voice test.

Successfully complete free mode as any character to unlock their 
voice as the announcer. This can be set this under the "Omake 1" 
option at the "EX Options" screen.