Team Fortress 2
21.6 hrs last two weeks / 163.1 hrs on record
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Assassin's Creed
19.5 hrs on record
Audiosurf
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Counter-Strike
Counter-Strike: Source
2.1 hrs on record
Crysis Warhead
Crysis Wars
4.5 hrs on record
Day of Defeat
Day of Defeat: Source
10.3 hrs on record
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Deathmatch Classic
Half-Life
Half-Life 2
Half-Life 2: Deathmatch
Half-Life 2: Episode One
Half-Life 2: Episode Two
2.6 hrs on record
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Half-Life 2: Lost Coast
Half-Life: Blue Shift
Half-Life: Opposing Force
Left 4 Dead
18.5 hrs on record
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Left 4 Dead Authoring Tools
Portal
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Ricochet
Source SDK
0.3 hrs on record
