Team Fortress 2
6 hrs last two weeks / 89.9 hrs on record
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Left 4 Dead
4.1 hrs last two weeks / 30.9 hrs on record
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Counter-Strike
25.2 hrs on record
Day of Defeat
Day of Defeat: Source
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Deathmatch Classic
Half-Life
2.1 hrs on record
Half-Life 2
1.6 hrs on record
Half-Life 2: Deathmatch
Half-Life 2: Episode One
Half-Life 2: Episode Two
4.4 hrs on record
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Half-Life 2: Lost Coast
Half-Life: Blue Shift
Half-Life: Opposing Force
Left 4 Dead Authoring Tools
Portal
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Ricochet
Source SDK
