Left 4 Dead 2
40.8 hrs last two weeks / 133.9 hrs on record
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Serious Sam HD: The First Encounter
1.7 hrs last two weeks / 1.7 hrs on record
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Universe at War: Earth Assault
1.5 hrs last two weeks / 1.5 hrs on record
Left 4 Dead
0.2 hrs last two weeks / 400.9 hrs on record
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Counter-Strike: Source
0.2 hrs last two weeks / 0.2 hrs on record
Torchlight
0.2 hrs last two weeks / 0.2 hrs on record
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Zombie Driver
0.1 hrs last two weeks / 0.1 hrs on record
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Audiosurf
1.6 hrs on record
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Commander Keen Complete Pack
Counter-Strike
Day of Defeat
Day of Defeat: Source
2.8 hrs on record
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Deathmatch Classic
Doom 2
Doom 3
Doom 3: Resurrection of Evil
Final Doom
Garry's Mod
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Half-Life
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: Blue Shift
Half-Life: Opposing Force
Half-Life: Source
Half-Life Deathmatch: Source
Heretic: Shadow of the Serpent Riders
Hexen
Hexen 2
Hexen: Deathkings of the Dark Citadel
Left 4 Dead 2 Add-on Support
Left 4 Dead 2 Authoring Tools
Left 4 Dead 2 Demo
9.6 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
Ricochet
Source SDK
Spear of Destiny
Team Fortress 2
0.6 hrs on record
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Team Fortress Classic
Torchlight Editor
Ultimate Doom
