Call of Duty: Modern Warfare 2 - Multiplayer
11.5 hrs last two weeks / 33.3 hrs on record
Left 4 Dead 2
1.4 hrs last two weeks / 11.8 hrs on record
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Counter-Strike: Source
1.2 hrs last two weeks / 2.4 hrs on record
Half-Life 2: Deathmatch
0.6 hrs last two weeks / 3.8 hrs on record
Team Fortress 2
0.5 hrs last two weeks / 33.3 hrs on record
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Half-Life 2
0.4 hrs last two weeks / 0.5 hrs on record
Audiosurf
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Call of Duty: Modern Warfare 2
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Counter-Strike
0.6 hrs on record
Day of Defeat
Deathmatch Classic
Half-Life
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 Deathmatch: Source
Killing Floor
9.3 hrs on record
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Killing Floor Mod: Defence Alliance 2
Killing Floor SDK
Left 4 Dead
143.4 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
1.1 hrs on record
Left 4 Dead Authoring Tools
Portal
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Ricochet
Source SDK
