Pause the game and enter: A, B, A, A, A, A, B, C

Pause the game and enter: A + B, C, C, A, A, B, B, B + C

Pause the game and press: Down + C, B, A, A, A, A, B, C

Pause and press: A + C, A + C, A + C, A, B, C, B, A

Pause and enter the following: A + Up, B, A, C, A, A, C, B

Pause game play and press A + C, A, B, C, B, C, A, C(2).

Pause game play and press A + C, B(2), C(3), A, B.

Pause game play and press Right + A, A(2), B, A, C, B, A.

Pause the game and enter: B, B, A, C, A + B, A + B, A + B, A + B

Pause game play and press C + Up, A(2), C, A, B, C(2).

At any time, pause the game and press C and Down simultaneously, then press A, B, C, A, B, A, C. You will hear Earthworm Jim say ''Cheater! Plasma!.'' Now when you unpause the game, you will have nine plasma shots. You can do this as much as you want.

Pause the game, and press A+C, A+B, C, C, B, B, A, A. You will hear Earthworm Jim yell ''Cheater'' and you will be brought to the ending scene of the game.

Pause game play and press A + C, A + C, A + C, A, B, C, B, A.