Left 4 Dead 2
2.3 hrs last two weeks / 2.3 hrs on record
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Team Fortress 2
1.8 hrs last two weeks / 103 hrs on record
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Braid
1.8 hrs on record
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Dawn of War: Soulstorm
6.3 hrs on record
Half-Life 2
Half-Life 2: Episode One
Half-Life 2: Episode Two
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Half-Life 2: Lost Coast
Left 4 Dead
7.3 hrs on record
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Left 4 Dead Authoring Tools
Mass Effect
46.2 hrs on record
Portal
2 hrs on record
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Source SDK
World of Goo
5.5 hrs on record
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