Counter-Strike: Source
29.7 hrs last two weeks / 389.6 hrs on record
Source SDK
9.7 hrs last two weeks / 35.7 hrs on record
Commander Keen Complete Pack
Darkest Hour
Day of Defeat: Source
0.4 hrs on record
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Doom 2
Doom 3
0.9 hrs on record
Doom 3: Resurrection of Evil
Final Doom
Garry's Mod
72.1 hrs on record
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Geometry Wars
1.3 hrs on record
Half-Life
1.1 hrs on record
Half-Life 2
7.2 hrs on record
Half-Life 2: Deathmatch
0.9 hrs on record
Half-Life 2: Episode One
0.4 hrs on record
Half-Life 2: Episode Two
2.8 hrs on record
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Half-Life 2: Lost Coast
Half-Life: Blue Shift
Half-Life: Opposing Force
Heretic: Shadow of the Serpent Riders
Hexen
Hexen 2
Hexen: Deathkings of the Dark Citadel
Killing Floor
2.2 hrs on record
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Killing Floor Mod: Defence Alliance 2
Killing Floor SDK
Left 4 Dead
5.7 hrs on record
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Left 4 Dead Authoring Tools
24.4 hrs on record
Mare Nostrum
0.3 hrs on record
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Mare Nostrum Dedicated Server
Master Levels of Doom II
Portal
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Quake
Quake 3 Arena
0.1 hrs on record
Quake 3 Team Arena
Quake II
0.2 hrs on record
Quake II: Ground Zero
Quake II: The Reckoning
Quake Mission Pack 1: Scourge of Armagon
Quake Mission Pack 2: Dissolution of Eternity
Rainbow Six Vegas
Red Orchestra
8.8 hrs on record
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Return to Castle Wolfenstein
0.5 hrs on record
Spear of Destiny
Team Fortress 2
33.8 hrs on record
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Team Fortress Classic
Ultimate Doom
