Press Ctrl-D while playing the game and enter the code.

Effect	Code
backtostart	Returns you to Fort Avernum. Very useful if you get stuck.
dontshowmeall	Stops making all characters appear on your automap.
editor	Brings up the character editor, enabling you to freely edit your party's skills, traits, and spells.
forgiveme	Makes all of the areas in the game forget your crimes. If you were hated there, you won't be anymore.
fps	See Avernum's current frame rate.
giveasnack	Gives your main character some cake.
iamdrained	Recharges your spell energy.
iampoor	Gives you 500 coins.
ikilledathron	If you killed the dragon Athron before she could give you a key piece of information, this cheat code will teach it to you.
iwanttobestronger	Gives you some experience.
leetbuffz	Gives each of your characters multiple blessings.
ouchouchouch	Heals and cures your group.
owmybrains	Cures any character that is suffering from a mental effect. Also removes a death curse.
resetboats	Returns all boats to their starting positions. Boats you previously purchased will no longer be your property.
showmeall	Makes all characters (even ones you can't see) appear on your automap.