PS2 versions of Half-Life, Deus Ex, Tribes, Return to Castle Wolfenstein (honestly, the Xbox version is WAY better than the PS2 version though), Quake 3, Star Trek Voyager: Elite Force, Soldier of Fortune, Unreal Tournament, Battlefield 2, and No One Lives Forever are good starting points since that they are PC ports. Also try Project Snowblind, Red Faction 1 and 2 (btw you can use a USB Keyboard and Mouse to play RF2!), the Timesplitters trilogy, Area 51, the Rainbow Six games, James Bond 007 Agent Under Fire and Nightfire (Nightfire being the better of the two), Killzone, Black, Call of Duty games, the Medal of Honor games, Darkwatch, the Brother in Arms games, and XIII. Most of those game are $9.99 or less. I hope this helps.