Buttville Level: Press Start to pause game play, then press L, A, Up, R, A, R, A, Select

Down The Tubes Level: Press Start to pause game play, then press Up, L, Down, A, R, A

For Pete's Sake Level: Press Start to pause game play, then press R, L, R, L, A, R

Level 5 Level: Press Start to pause game play, then press R, L, A, B, B, A, L, R

Snot A Problem Level: Press Start to pause game play, then press R, Up, Select, L, R, Left

What The Heck Level: Press Start to pause game play, then press Select, R, B, Down, L, B

Level Select: Press Start to pause game play, then press Right, R, B, A, L, L, A, R