Audiosurf
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Bioshock
Commander Keen Complete Pack
Counter-Strike: Source
Defense Grid: The Awakening
10.6 hrs on record
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Doom 2
Doom 3
Doom 3: Resurrection of Evil
Final Doom
Half-Life
Half-Life 2
Half-Life 2: Deathmatch
Half-Life 2: Episode One
Half-Life 2: Episode Two
3 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
Left 4 Dead
79.2 hrs on record
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Left 4 Dead Authoring Tools
Master Levels of Doom II
Portal
10.7 hrs on record
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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
Source SDK
Spear of Destiny
STALKER: Shadow of Chernobyl
Team Fortress 2
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Ultimate Doom
Wolfenstein 3D
World of Goo
9.8 hrs on record
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X3: Reunion
