Team Fortress 2
30.9 hrs last two weeks / 278.6 hrs on record
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Half-Life 2: Episode Two
3.7 hrs last two weeks / 9.4 hrs on record
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Killing Floor
0.9 hrs last two weeks / 16.6 hrs on record
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Plants vs. Zombies
0.5 hrs last two weeks / 65 hrs on record
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Audiosurf
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Blueberry Garden
2.2 hrs on record
Braid
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Counter-Strike: Source
5.3 hrs on record
Darkest Hour
Dark Messiah Might and Magic Multi-Player
Dark Messiah Might and Magic Single Player
Doom 2
Everyday Shooter
0.5 hrs on record
Half-Life
Half-Life 2
Half-Life 2: Deathmatch
Half-Life 2: Episode One
Half-Life 2: Lost Coast
Half-Life: Blue Shift
Half-Life: Opposing Force
Killing Floor Mod: Defence Alliance 2
Killing Floor SDK
Left 4 Dead
43.3 hrs on record
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Left 4 Dead Authoring Tools
Mare Nostrum
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Mare Nostrum Dedicated Server
Master Levels of Doom II
Mirror's Edge
Portal
0.2 hrs on record
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Red Orchestra
2.4 hrs on record
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Source SDK
The Path
Ultimate Doom
Unreal Tournament 3 Black
9.5 hrs on record
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World of Goo
0.2 hrs on record
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Zeno Clash
38.5 hrs on record
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