Cheats for Bust-A-Move 3000 (GAMECUBE)

Another World
At the "Push Start button" screen, press Y, Left, Right, Y. If you entered the code correctly, a message will appear in the top right corner of the screen. Select puzzle mode and then arcade mode to access additional levels.

Bonus characters
At the "Push Start button" screen, press Y, Right, Left, Y. If you entered the code correctly, a message will appear in the top left corner of the screen.