Team Fortress 2
2.2 hrs last two weeks / 21.1 hrs on record
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Unreal Tournament 3 Black
1.1 hrs last two weeks / 28.5 hrs on record
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Left 4 Dead 2
0.6 hrs last two weeks / 17.3 hrs on record
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Batman: Arkham Asylum
Batman: Arkham Asylum - License Revoking Tool
Counter-Strike: Source
Half-Life 2
Half-Life 2: Deathmatch
Half-Life 2: Episode One
Half-Life 2: Episode Two
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Half-Life 2: Lost Coast
Half-Life Deathmatch: Source
Killing Floor
27 hrs on record
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Killing Floor Mod: Defence Alliance 2
Killing Floor SDK
Left 4 Dead
28.2 hrs on record
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Left 4 Dead 2 Add-on Support
Left 4 Dead 2 Authoring Tools
Left 4 Dead 2 Demo
0.9 hrs on record
Left 4 Dead Authoring Tools
On the Rain-Slick Precipice of Darkness, Episode One
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Portal
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Source SDK
World of Goo
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