Secret Multiplayer Codes
At the main menu, select multiplayer and then scroll down to secret to input these codes:
[Square], [Circle/Square], [Any Button] - Unlock Arcade Smash!
[Square], [X/Triangle], [Any Button] - Unlock Arcade Stunt!
[Triangle], [Circle/Square], [Any Button] - Unlock Hotseat Smash!
[Triangle], [X/Triangle], [Any Button] - Unlock Hotseat Stunt!
[X], [Any Button], [X/Circle/Square] - Unlock Mono Screen Fun!
[X], [Any Button], [Triangle] - Unlock Mono Screen Pro!
[Circle], [Circle], [X/Circle/Square] - Unlock Splitscreen Bonus Fun!
[Circle], [Circle], [Triangle] - Unlock Splitscreen Bonus Pro!
[Circle], [X], [X/Circle/Square] - Unlock Splitscreen Classic Fun!
[Circle], [X], [Triangle] - Unlock Splitscreen Classic Pro!
[Circle], [Square], [X/Circle/Square] - Unlock Splitscreen Smash Fun!
[Circle], [Square], [Triangle] - Unlock Splitscreen Smash Pro!
[Circle], [Triangle], [X/Circle/Square] - Unlock Splitscreen Stunt Fun!
[Circle], [Triangle], [Triangle] - Unlock Splitscreen Stunt Pro!