Pause the game and press L1, Up, Square. Unpause and pause again. Then enter the codes
| Hand Grenade | Triangle, Circle, Square, Square, L1, Right |
| Mortar | Right, L1, Triangle, Square, Right, Circle, Left, Left |
| Dummy Decoy | X, L1, Right, Circle, X, Up, Square |
| Super Chain Gun | Left, L1, Down, Square, Triangle, Up, Down |
| Homing Grenade | Right, Up, X, Square, L1, L1, Right |
| Bones Airstrike | Down, Up, Circle, Down, Up, Down, L1 |
| Invincibility | Circle, Triangle, Triangle, Circle, Right, Up, Left, L1, Square |
| Bones seal | Triangle, Right, Circle, Left, Left |
| 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 | 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 |
| Display coordinates | Down, Down, Triangle, Triangle, L1, X, Triangle |
| No opponents | Up, Square, L1, Left, L1, Square, Square |
| Strange mode | Left, Circle, X |
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