I remember playing the following games on my old pc ..which was an AMD duron 1.2 with a geforce 4 MX 400 graphics card and with 512 ddr ram. 3rd person games Mafia (Highly Recommended) Max payne 1 & 2 MDK (weird but fun- will run on pentium 1) Hitman 1 & 2 ONI First person shooter games Serious Sam the second encounter(classic Fun) Unreal tournament Half life soldier of fortune 2 Iron Storm Call of Duty Medal of honor Real Time Strategy Battle realms (Didn't recieve much attention but it is HIGHLY Recommended even now!!!) Warcraft 3 Hack N slash/Role playing Dungeon Siege Anyways thats all i can think at the moment