8 Digit
Left 4 Dead 2
Star Wars Battlefront II
Left 4 Dead
Aion Collectors Edition
Condition Zero
Counter-Strike
Counter-Strike: Source
CrimeCraft: Premium Edition
Day of Defeat: Source
Garry's Mod
Half-Life 2
Half-Life 2: Deathmatch
Half-Life 2: Episode One
Half-Life 2: Episode Two
Half-Life 2: Lost Coast
Left 4 Dead 2 Demo
Left 4 Dead Authoring Tools
Madballs in...Babo:Invasion
Mass Effect
Overlord
Overlord II
Portal
Street Fighter IV
Team Fortress 2
Unreal Gold
Unreal II: The Awakening
Unreal Tournament
Unreal Tournament 3 Black
Unreal Tournament 2004
Warhammer® 40,000™: Dawn of War® II
BUT 2.1 hrs past 2 weeks Which was from me trying out the game
Up to you mate