Cheat mode:
Enter one of the following codes then press [Enter] during game play to activate the corresponding cheat function. Note: If colonists are selected, they may follow the command assigned to various keys being entered in the code.

Effect	Code
Heal all colonists	gsaheal
Removes all roofs	gsaroof
Control aliens	gsaswap
Kills selected characters; use with gsaswap code to kill aliens	gsakill
Stops aliens and colonists	gsastop
BOG weapon created at pointer; collect it for extra defense and ability to lock doors	gsabog
KNIFE weapon created at pointer; collect it for invisibility to aliens	gsaknife
Commander created at pointer	gsacmdr
Medical officer created at pointer	gsamedi
Technician created at pointer	gsaboff
Level skip	gsawin

Level select:
Hold [Shift] + [Ctrl] and click on "Single Player" to play any normal or special level in the game.