Left 4 Dead 2
19.9 hrs last two weeks / 57.4 hrs on record
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Zombie Driver
1.2 hrs last two weeks / 1.2 hrs on record
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Audiosurf
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Condition Zero
Condition Zero Deleted Scenes
Counter-Strike
1 hrs on record
Counter-Strike: Source
Day of Defeat
Day of Defeat: Source
1.3 hrs on record
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Deathmatch Classic
FlatOut
Half-Life
Half-Life 2
Half-Life 2: Deathmatch
Half-Life 2: Episode One
Half-Life 2: Episode Two
2.3 hrs on record
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Half-Life 2: Lost Coast
Half-Life: Blue Shift
Half-Life: Opposing Force
Half-Life: Source
Half-Life Deathmatch: Source
Left 4 Dead
268 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
4.9 hrs on record
Left 4 Dead Authoring Tools
Portal
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Prey
Ricochet
Source SDK
Team Fortress 2
37.1 hrs on record
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Team Fortress Classic
