To view the map, pause the game and press A, X, A, X, A, A, A, A.

Press Start to pause the game. Simultaneously press and release Left + A, then press B, X, A, A, B, X, A, Start. A picture of the Earthworm Jim design team appears, followed by a debug menu with level-select and invincibility options.

Enter these codes while the game is paused.

• What The Heck -- Y, X, Y, X, A, B, A, X
• Down The Tubes -- Up, Down, Left + Down, Left, Down, Down, Up + Left, Down
• Snot A Problem -- A, B, X, B, A, B, B, B + L
• Level 5 -- A + B, B + X, X + Y, Left, Left, Right, Left, Right
• For Pete's Sake -- A, B, X, A, B, X, A, B + R
• Buttville -- A, X, Left, Left, X + Y, Up, Down, Left
• Andy Asteroids -- A + L, A, R + A, A, B, B, X, B
• Who Turned Out The Light? -- A, B, Up + Y, Up + Y, Left, Right, Left, Right
• Jump to Princess -- Left + A, X, X, X + B, X, A, X, Left + A

While playing, pause the game and press Y + X, B, Y, B, X, B, X, X.

To refill your energy while playing, pause the game and press A + X, B, A, B, B, X + Y, B, A.

While playing, pause the game and press B + X, B, B, B, A, A, X, A.

To refill your ammunition while playing, pause the game and press A + X, B, A, B, X, X, X, X.

For a free plasma power-up, pause the game and press A + X, B, B, A, A, X, B, L + R.

To skip to the next level, press A, B, X, A, A+ X, B+ X, B+X, A+X.