Left 4 Dead 2
5.9 hrs last two weeks / 21.1 hrs on record
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Team Fortress 2
2 hrs last two weeks / 26.2 hrs on record
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Condition Zero
Condition Zero Deleted Scenes
Counter-Strike
0.8 hrs on record
Counter-Strike: Source
Day of Defeat
Day of Defeat: Source
4.9 hrs on record
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Deathmatch Classic
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
Left 4 Dead
52.4 hrs on record
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Left 4 Dead 2 Add-on Support
Left 4 Dead 2 Authoring Tools
Left 4 Dead Authoring Tools
Portal
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Ricochet
