The list:
TES IV: Oblivion
TES III: Morrowind
Hellgate: London
Counter-Strike: Source
Half-Life 2
Half-life 1
Day of Defeat: Source
Call of Duty 4
Warcraft 3
Rise of Nations
Age of Empires 2
BF:2
Rainbow six: Vegas
C&C Generals
BF 1942
and i think that is nearly all of them....