Team Fortress 2
45.8 hrs last two weeks / 1123.8 hrs on record
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Source SDK
6.5 hrs last two weeks / 7.2 hrs on record
Call of Duty: Modern Warfare 2 - Multiplayer
5.7 hrs last two weeks / 87 hrs on record
Left 4 Dead 2
1.6 hrs last two weeks / 20.4 hrs on record
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Audiosurf
0.2 hrs last two weeks / 19.2 hrs on record
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Borderlands
17.5 hrs on record
Call of Duty: Modern Warfare 2
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Commander Keen Complete Pack
Counter-Strike: Source
80.8 hrs on record
Day of Defeat: Source
1.9 hrs on record
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Doom 2
Doom 3
Doom 3: Resurrection of Evil
Final Doom
Garry's Mod
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Half-Life 2
0.7 hrs on record
Half-Life 2: Deathmatch
Half-Life 2: Episode One
Half-Life 2: Episode Two
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Half-Life 2: Lost Coast
Heretic: Shadow of the Serpent Riders
Hexen
Hexen 2
Hexen: Deathkings of the Dark Citadel
Left 4 Dead
148.3 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
7 hrs on record
Left 4 Dead Authoring Tools
Master Levels of Doom II
Portal
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Quake
Quake 3 Arena
Quake 3 Team Arena
Quake II
Quake II: Ground Zero
Quake II: The Reckoning
Quake Mission Pack 1: Scourge of Armagon
Quake Mission Pack 2: Dissolution of Eternity
Return to Castle Wolfenstein
Spear of Destiny
Ultimate Doom
Unreal Tournament 3 Black
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