The best first person shooter ever created (maybe it is only my opinion, but still - i love it). You can do almost everything in Postal, kill everyone you want, or don't kill anyone and avoid bullets, the world is open so you can play in sandbox style. The game is challenging (and there are many difficult options), there are many weapons to choose (from pistols and machine guns, to scissors and rocket launchers). Expansion ("Apocalypse Weekend") is a little dissapointing however, because you can't skip missions (to play around with citizens of Paradise).