The bottleneck is the graphics carc, being a mobile device. So current games will not play in optimal settings. However, there are awesome old games that will run in full and are just as fun as todays titles. So Im gonna list some games, you probably played most already, but fi you havent, feel free to get any of the titles below, they are the best I've played:
-Half-Life
-No One Lives Forever
-Star Wars Battlegrounds Saga
-Grand Theft Auto Vice City
-Indigo Prophecy
-Bioshock
-Portal
-Limbo
And dont foreget that you can emulate a Nintendo 64 on your PC with Project64, and play ALL N64 games for free.