Debug Mode
Go to the Options screen and press A, A, B, B, C, C, C, C, B, B, A, A, A, A, B, B, C, C.
Fast Levels
When you are in the game press Start then press: A, B, C, B, A, C, A, B, C, B, A, C+Start. You should hear a victory sound. You will get one of your friends and a bonus stage!
Level Skip / Invincibility
While playing, press Start to pause the game. Now press C, A, B, C, B, A, C, A, B, C, B, A, C. If you did this correctly you will hear a tone. Immediately afterwards, you will see the "Level Completed" screen and will advance to the next level, where you will be invincible.
