You could probably run Halo on it. The minimum requirements for the game is like a P3 700 mhz processor, and 32 mb T&L card. It probably wouldn't run all that great, but you were just asking if it was possible. My friends like those simulation games, like Ragnarok and Red Alert. I personally go for the fps, but only have Halo right now. Try getting CS 1.6, if you like shooters.