Bonus levels
Pause during a game, then hold Z and press C-Down, L, R, L, R, L, R, L, R, L, R. A tone will acknowledge the code. Highlight “Enter Secret Worlds” option and press A to play a bonus level.

Select level
Pause during a game, then hold Z and press R, B, A, B, A, C-Up, C-Down, C-Left, C-Right, C-Up, C-Down, C-Left, C-Right. A tone will acknowledge the code. Highlight “Unlock Worlds” option and press A to select any level.

Cheats