GameTap

Homeworld 2 is the 2nd game in the Series by Relic & Sierra. The Homeworld series is a Scf-Fi space-based RTS. It was (and largely still is) unique in it's integration of easy-to-navigate 3D battles.

Psychonauts is an action game from Double Fine Productions and Majesco, with design by Tim Schafer, famed designer of Full Throttle and Grim Fandango. You play Raz, a kid attending a summer camp, where students are trained to harness their pyschic powers for combat and intelligence purposes. You must develop your own mental abilities through mental training, and use your abilities to solve a kidnapping case in the summer camp.

Serious Sam is an FPS from Croteam and Gathering of Developers. You play as Sam "Serious" Stone, and do battle with thousands of alien nasties throughout various historical set-pieces, using an array of diverse and enormous weapons.

Serious Sam: The Second Encounter is an FPS from Croteam and Gathering of Developers. You play as Sam "Serious" Stone, and do battle with thousands of alien nasties throughout various historical set-pieces, using an array of diverse and enormous weapons.