Team Fortress 2
4 hrs last two weeks / 58.1 hrs on record
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Condition Zero
Condition Zero Deleted Scenes
Counter-Strike
Counter-Strike: Source
2.9 hrs on record
Darkest Hour
Dark Messiah Might and Magic Multi-Player
Dark Messiah Might and Magic Single Player
Day of Defeat: Source
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Garry's Mod
0.5 hrs on record
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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 Deathmatch: Source
Killing Floor
8.8 hrs on record
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Killing Floor Mod: Defence Alliance 2
Killing Floor SDK
Left 4 Dead
17.3 hrs on record
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Left 4 Dead Authoring Tools
Mare Nostrum
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Mare Nostrum Dedicated Server
Portal
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Red Orchestra
4.6 hrs on record
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Source SDK
Unreal Tournament 3 Black
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World of Goo
3.9 hrs on record
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Zeno Clash
4.9 hrs on record
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