Using these codes will bring your score down to zero, and in the demo you won't be able to save your game... use them only for practice :)
In the demo only these will work.
GABBAGABBAHEY - You must type this to enable the cheats (for all versions)
SCOURGE - Wowie Zowie Weapons (all the weapons)
MITZI - All keys
FLASH - Illuminate the path to the exit
AHIMSA - Turns off enemy firing
These will work in the Registered Version.
BUGGIN - Speed up everything
BRUIN - Extra life
BIGRED - Super Wowie Zowie (all weapons in the game)
FLASH - Illuminate path to exit
AHIMSA - Turns off enemy firing
These work in Registered Version 1.4 and up.
POBOYS - Blows up the reactor
ASTRAL - Ghost mode. lets you fly through doors and some walls
PORGYS - Mega Wowie Zowie Weapons (You gotta See!)
LUNACY - Robots move fast and hardly ever fire
PLETCH### - Replace ### with a 3 digit number from 000 to 998. When you shoot a robot with a flare, it will "Paint" that texture on the robot. 999 turns off "Painting."