Type bubbles at any menu to enable cheat mode. A sound will confirm correct code entry. Then, enter one of the following codes to activate the corresponding cheat function.
God mode - iamzeus
Level select - thefullmonty
Adult textures on special ship titsoot
All weapons, full ammo iammonty
Toggle beam weapons - jimbeamthis or jimbeam
Toggle missile weapons - lumberjack
You will be unable to get the secret bike if any cheats are used, or if cheat mode is enabled. You will see a message that reiterates this if you complete the game.