Level select:
REMEMBER: this code only works on a standard controller. From the main menu, press and release LS + RS + Up. Press A to start a new game. From the difficulty menu press and release LS + RS + Down. Press A, B or C to select a difficulty level. Press B during the "Begin transmission" display. Highlight a level and press A to start the game at that level with the appropriate inventory.

Enable farts:
Highlight a game from the load game menu. Press LS + RS + B to start the game. Levels with the Butthead monster will be modified by the code.

Full inventory:
REMEMBER: this code only works on a standard controller. Press C + X to enter 3D map mode. Rotate the map on any axis. Press P, then LS + A + B + C during rotation of the map back to default view. Ox's inventory will contain all the weapons and the jetpack.

Full ammunition:
Hold LS + RS + Right + B + C and allow Ox to complete at least one backflip. The ammunition for all weapons will be returned to full.

Full health:
Press RS + Down +B during a backflip. Ox's health will be returned to full.

No collisions:
Switch to jetpack mode and kill an alien. Stand on the alien and press C, C to display the weapon select screen. Press LS + Right/Down. The words "FREE! FREE!" will be displayed to confirm code entry. Ox will be able to fly through the walls and move anywhere in the level.

Cancel no collisions:
Switch to jetpack mode and press C(2) to display the weapon select screen. Press LS + Right/Down.