Left 4 Dead 2
50.1 hrs last two weeks / 82.2 hrs on record
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Counter-Strike
Counter-Strike: Source
Day of Defeat
Day of Defeat: Source
32.9 hrs on record
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Deathmatch Classic
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 2 Add-on Support
Left 4 Dead 2 Authoring Tools
Left 4 Dead 2 Demo
4.1 hrs on record
Portal
1 hrs on record
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Ricochet
Saint's Row 2
3.8 hrs on record
Source SDK
Team Fortress 2
706.4 hrs on record
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