Debug Screen
During gameplay, hit Start to pause. Press and release Left and A simultaneously,
then hit B, X, A, A, B, X, A, and Start. A picture of the EWJ design team
will appear. Then you'll see the debug menu, where you can select level and
invincibility.
Weird Code
During game play, hit Start to pause. Hit Y, A, B, B, A, Y, A, B, B, and A.
Nick Jones (with five different haircuts) will tell you that you've entered a
code that no longer works.
Warp to Heck
During the game, hit Start to pause. Hit Y, X, Y, X, A, B, A, and X, and
you'll immediately warp to the What the Heck level.
Level Skip
During the game, hit Start to pause. Hit A, B, X, A, A+X simultaneously,
B+X simultaneously, B+X simultaneously, and A+X simultaneously. A "groovy"
screen will appear, then a new screen announcing your new level.
Weapons and Continues
Hit Start to pause, and enter these codes to gain advantages:
Extra Plasma Shot: A, A, B+L simultaneously, A, A, X, B+L simultaneously, and X.
Extra Continues: A, B, A, B, X, Y, X, and Y.
Fills weapons to 1000 rounds: A, B, B+L simultaneously, B, X, A, X, and X.
Extra Life: B, B, A, X+Y simultaneously, A, A, A, and A.
Level Select and Invincibility
Press Start to pause the game. Simultaneously press and release Left and A,
then press B, X, A, A, B, X, A, and Start. A picture of the Earthworm Jim
design team appears, followed by a debug menu with level-select and
invincibility options.
Extra Lives and Ammo, Weapons, Continues, and More Extra Life: Press Left, Select, Right, Select, Left, Select, Right, Select.
Three-way gun: Press X, X, X, X, A, A, X, Select.
Plasma gun: Press X, X, X, X, A, A, A, Select.
Bubble gun: Press X, X, X, X, A, B, A, Select.
Money worms: Press A, A, B, A, A, Y, B, Y.
Extra continue: Press A, Select, A, B, X, Y, X, Y.
Extra ammo: Press Select, X, X, X, X, X, X, Select.
100% energy: Press X, Select, X, B, X, Select, X, A.
Warp to Puppy Love: Press Down, Right, A, B, X, Left, Right, A.
Warp to Inflated Head: Press Up, Down, X, A, B, Y, Left, Right.
Warp to Lorenzo's Soil: Press A, X, Left, Right, X, Left, Right, Left.
Warp to ISO 9000: Press A, B, X, Left, Left, Right, Left, Right.
Stage Skip
Pause during a game and press Select, Button B, Button X, Button A, Button A,
Button X, Button B, and Select. You hear a warping sound if you did the trick
correctly. Unpause the game, and you advance to the next level.