Pause the game and press L1, Up, Square. Now unpause the game and
immediately pause the game again. Enter the following codes:

Hand Grenade:
     Triangle, Circle, Square, Square, L1, and Right.

Mortar:
     Right, L1, Triangle, Square, Right, Circle, Left, and Left.

Dummy Decoy:
     X, L1, Right, Circle, X, Up, Square.

Super Chain Gun:
     Left, L1, Down, Square, Triangle, Up, and Down.

Homing Grenade:
     Right, Up, X, Square, L1, L1, and Right.

Bones Airstrike:
     Down, Up, Circle, Down, Up, Down, and L1.

Invincibility:
     Circle, Triangle, Triangle, Circle, Right, Up, Left, L1, Square.

Bones seal:
     Triangle, Right, Circle, Left, Left

Earthworm Jim cow power-up:
     Up, Down, Down, L1, Right.

Sniper grenade:
     Up, Square, L1, Left, Circle, Triangle.

Homing sniper grenade:
     Left, Up, X, Square, L1, R1, Right.

World's smallest nuke:
     Down, Up, Square, Triangle, Down, Circle, Circle, Right.

World's most interesting bomb:
     Down, Right, Circle, Circle, Left, Left, Up, Square, Triangle.

Thumper weapon:
     Down, Up, Left, Left, Triangle, Up, Right, Down.

Twister weapon:
     Down, L1, Square, Triangle, Right, Up, X.

Homing bullets:
     Square, L1, L1, Right.

Nodie:
     Circle, Triangle, Triangle, Circle, Right, Up, Left, L1, Square.

150 hit points and extras:
     Square, Triangle, L1, L1, Left, Square, Triangle, Circle, Right, L1.

Full hit points:
     Right, L1, Square, Triangle, L1, Down.

Faster speed:
     Right,  Circle, Triangle, Circle, X. Press R2 during game play to
activate faster speed.

Display coordinates:
     Down, Down, Triangle, Triangle, L1, X, Triangle.

No opponents:
     Up, Square, L1, Left, L1, Square, Square

Strange mode:
     Left, Circle, X.

Level Select:
     Go  to  the  Title  Screen. Press Left, Circle, Triangle, Up, and
Square. The Level Select option will appear on the screen.

Free flying:
     Do  the  Earthworm  Jim cheat then on the last level jump off the
edge  of the teleporter and do the e.w.j cheat in the air and you will
be able to fly any were you like.

Unlimited Hand Grenades:
     When using the hand grenades, press up 4 times while holding down
the  X  button. You will then see that the amount of grenades left has
change to an X which means unlimited