Team Fortress 2
21.3 hrs last two weeks / 329.4 hrs on record
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Audiosurf
10.5 hrs on record
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Counter-Strike
0.3 hrs on record
Counter-Strike: Source
Day of Defeat
Deathmatch Classic
Half-Life
Half-Life 2
Half-Life 2: Deathmatch
Half-Life 2: Lost Coast
Half-Life: Blue Shift
Half-Life: Opposing Force
Left 4 Dead
33.5 hrs on record
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Left 4 Dead 2
7 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
2.8 hrs on record
Left 4 Dead Authoring Tools
Ricochet
Source SDK
