Left 4 Dead 2
57 hrs last two weeks / 57 hrs on record
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Team Fortress 2
21.8 hrs last two weeks / 535.8 hrs on record
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Garry's Mod
1.2 hrs last two weeks / 15 hrs on record
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Source SDK
0.6 hrs last two weeks / 13.8 hrs on record
Counter-Strike: Source
Empire: Total War
12 hrs on record
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Half-Life 2
13 hrs on record
Half-Life 2: Deathmatch
Half-Life 2: Episode One
Half-Life 2: Episode Two
4.7 hrs on record
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Half-Life 2: Lost Coast
Left 4 Dead
5.9 hrs on record
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Left 4 Dead 2 Add-on Support
Left 4 Dead 2 Authoring Tools
Left 4 Dead Authoring Tools
Portal
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