Rainbow Six

Unlimited ammo:
Reload only in case, if you have a single bullet in your clip.
After you put the new clip, your ammo will be refilled, - but you will
not lose a clip. Repeat as many times you want.

Cheat mode:
Enter the following codes during gameplay:

Become thin: Press Analog-stick Down + Directional-pad Down + Y
Big head mode: Press Analog-stick Up + Directional-pad Down + X
Everybody die around you: Press Analog-stick Down + Directional-pad Down + B
God mode for your character: Press Analog-stick Up + Directional-pad Down + A
Heavy breathing:Press Analog-stick Down + Directional-pad Down + A
Mega head mode: Press Analog-stick Left + Directional-pad Down + X
Stumpy mode: Press Analog-stick Left + Directional-pad Down + Y
Team invincibility:Press Analog-stick Left + Directional-pad Down + A
Toggle clam pincer hands: Press Analog-stick Left + Directional-pad Down + B
Toggle team AI: Press Analog-stick Up + Directional-pad Down + Y
Victory: Press Analog-stick Up + Directional-pad Down + B
Change the faces of your team: Press Analog-stick Down +
Directional-pad Down + X