Left 4 Dead 2
11.6 hrs last two weeks / 29 hrs on record
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Half-Life
4.4 hrs last two weeks / 70.5 hrs on record
Garry's Mod
1.7 hrs last two weeks / 12.7 hrs on record
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Source SDK
0.7 hrs last two weeks / 175.9 hrs on record
Team Fortress 2
0.4 hrs last two weeks / 15.4 hrs on record
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DiRT 2
0.2 hrs last two weeks / 0.2 hrs on record
Counter-Strike: Source
0.1 hrs last two weeks / 4.7 hrs on record
Half-Life 2
138 hrs on record
Half-Life 2: Deathmatch
0.8 hrs on record
Half-Life 2: Episode One
Half-Life 2: Episode Two
6.3 hrs on record
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Half-Life 2: Lost Coast
Left 4 Dead
176.2 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
9.2 hrs on record
Left 4 Dead Authoring Tools
36.5 hrs on record
Portal
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