Start a new game and type GIVE IT TO ME BABY (case-sensitive) as a name to enable cheat mode. The message "Cheat Activated" will appear to confirm correct code entry. Enter your desired name and start the game, then go into your onboard computer. A cheat menu will now be accessible. Note: When you "Scavenge Level", you will destroy anything you have not researched yet, such as spawners, buildings, enemy, and seismic stablizers.
After completing the game, any game that you load or start afterwards will have a weapon called "Cranial Implant". This allows you to use anything controlled by a pilot, for example Aliens, Tanks, Quxles, etc. It is used like Guided rockets, and not selectable by the function keys. You can only select it via the "Next/Prev weapon" option.