Left 4 Dead 2
20.3 hrs last two weeks / 81.7 hrs on record
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Bioshock
9.9 hrs on record
Condition Zero
Condition Zero Deleted Scenes
Counter-Strike
Counter-Strike: Source
Day of Defeat
Day of Defeat: Source
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Dead Space
494.3 hrs on record
Deathmatch Classic
Eets
1.1 hrs on record
Fallout 3
225.9 hrs on record
Garry's Mod
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Gravitron 2
0.2 hrs on record
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Half-Life
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: Blue Shift
Half-Life: Opposing Force
Half-Life: Source
Half-Life Deathmatch: Source
I-Fluid
1 hrs on record
Left 4 Dead
5.1 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
1.5 hrs on record
Left 4 Dead Authoring Tools
Monkey Island Special Edition
0.2 hrs on record
Multiwinia
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Portal
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Ricochet
SiN 1
SiN 1 Multiplayer
SiN Episodes: Emergence
Source SDK
STALKER: Shadow of Chernobyl
75.8 hrs on record
Team Fortress 2
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Team Fortress Classic
Trials 2 Second Edition
0.5 hrs on record
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X2: The Threat
