Press ~ to display the console during game play,
then one of the following codes to activate the corresponding
cheat function.

Code
God mode cheatnodmg
More crystals cheatfreecrystal
AI texts cheatsnapshotaitext or cheatcycleaitext
Level select level <0-23>
Set sound volume soundvol <0-100>
Set music volume musicvol <0-100>
Set gamma value gammaval <0-100>
Pitch control pitch <0-1>
Set force feedback forcefeedback <0-100>
Quit game quit
Exit console window exit