Team Fortress 2
13 hrs last two weeks / 396.9 hrs on record
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QuantZ
0.1 hrs last two weeks / 0.3 hrs on record
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Audiosurf
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Bejeweled 2 Deluxe
Bookworm Adventures Deluxe
Commander Keen Complete Pack
Counter-Strike: Source
Doom 2
Doom 3
Doom 3: Resurrection of Evil
Evil Genius
Final Doom
Geometry Wars
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
Heretic: Shadow of the Serpent Riders
Hexen
Hexen 2
Hexen: Deathkings of the Dark Citadel
Insaniquarium Deluxe
Left 4 Dead
31.3 hrs on record
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Left 4 Dead Authoring Tools
Master Levels of Doom II
Monkey Island Special Edition
Osmos
3.7 hrs on record
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Peggle Deluxe
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
Source SDK
Spear of Destiny
Speedball 2 - Tournament
0.1 hrs on record
Ultimate Doom
Wolfenstein 3D
X-Com: Apocalypse
X-Com: Enforcer
X-Com: Interceptor
X-COM: Terror from the Deep
X-Com: UFO Defense
