Enable the console by using the "Option" menu. Then, press ~ to display the console window. Enter seta thereisacow "1337" as a console command. Then, press ~ to display the console window again and enter one of the following codes to activate the corresponding cheat function. Note: Open the cfg file with a text editor and change the "seta monkeytoy" value from "1" to "0" if needed.

Effect	Code
Add laser sight to all weapons	cg_LaserForceOn 1
All weapons	give all
Better vision	r_fullbright
Change maps	map or spdevmap [name]
Draw light emitted from the laser	cg_laserlight 1
Enemies ignore you	notarget
Flight mode	ufo
Full ammunition	give ammo
God mode	god
God mode but screen still shakes	demigod
No clipping mode	noclip
Remove all your guns and health	take all
Remove gun graphics	cg_drawGun
Remove your ammo	take ammo
Set gravity; default is "39"	jump_height [number]
Set player's sprint speed	player_sprintSpeedScale
Set speed; default is "1.00"	timescale [number]
Shoot without reloading	sf_use_ignoreammo 1
Spawn indicated item	give [item name]
Suicide	kill
Zoom with any gun	cg_fov