Team Fortress 2
32.5 hrs last two weeks / 348.2 hrs on record
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Audiosurf
2.3 hrs last two weeks / 44.4 hrs on record
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Counter-Strike
Counter-Strike: Source
Day of Defeat
Day of Defeat: Source
44.4 hrs on record
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Deathmatch Classic
Defense Grid: The Awakening
7.6 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
Left 4 Dead
27.7 hrs on record
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Left 4 Dead 2
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Left 4 Dead Authoring Tools
Max Payne
Max Payne 2: The Fall of Max Payne
Portal
2.3 hrs on record
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Ricochet
Source SDK
