Call of Duty 4 Demo & Full Game Cheats

Enable the console from the game's in-game options.
Hit the tilde key (~) to drop the dev-console.
Type seta thereisacow "1337" and then press ENTER.
Type spdevmap bog_a and then press ENTER.
This will start the demo with cheats enabled.
When playing, drop down the dev-console and enter

 

the following codes and hit ENTER to activate or toggle them.

Cheat Codes (COMPLETE VERSION)
Same as above but after you load up the spdevmap bog_a exit out and load the level you are currently at, or a new game.

You can not select "resume" and have the cheats function you can however select the map/act you want to start at with the cheats enabled.

Cheat	Effect
give all	Access All Weapons
god	God Mode
noclip	No Clipping Mode
notarget	Enemies Ignore You
give ammo	Full Ammo
jump_height #	Adjust Gravity Default = 39
timescale #	Adjust Time Default = 1.00
cg_LaserForceOn 1	Add Laser Sights to ALL Weapons
demigod	God mode but screen still shakes
ufo	Same as noclip?
r_fullbright	Easier to see things
cg_drawGun	Removes Your Gun
cg_fov	Zoom with any Gun