America's Army

A FPS made by the U.S. Military to give people a virtual experience of being in the battlefield. Consists of big noobs who always shoot their teammates in the Special Forces missions, and consists of expert gamers who know what their doing and can pwn. Users can modify their M4A1 rifle with scopes, bipods for sniping, grenade launchers for heavy assault, and with silencers for silent kills. Free, good graphics, good physics. Speaking of which, the developers have added rag doll physics to the game making it more realistic, the rag dolls are very light, meaning they can fly sky high when blown up by a RPG or grenade. Somewhat associated with weed.