So I am cheap. erm...broke and cheap.
Not everyone can afford the newest releases and still feed the cat something other than scraps from the neighbor's garbage. So here is the Open Source Games list from Wiki. I personally have played a few of these games and some
are worth playing, especially if you also cannot afford a newer gaming rig. (AssaultCube will play nicely on a Pentium 4 2.0ghz that has at least a 128mb video card).Open Source Games
So feel free to experiment a little and let us know what you thought of these titles. There are a few others not mentioned on the list, like Warsow and Gunz (Both FPS games. Warsow is like Unreal Tournament meets Metroid Prime).