Advent Rising
Arx Fatalis
BloodRayne
BloodRayne 2
Call of Duty
Call of Duty 2
Call of Duty: United Offensive
Commander Keen Complete Pack
Commandos 2: Men of Courage
Commandos 3: Destination Berlin
Commandos: Behind Enemy Lines
Commandos: Beyond the Call of Duty
Commandos: Strike Force
Condition Zero
Condition Zero Deleted Scenes
Counter-Strike
3.5 hrs on record
Counter-Strike: Source
Darkest Hour
Dark Messiah Might and Magic Multi-Player
Dark Messiah Might and Magic Single Player
Darwinia
Day of Defeat
4.3 hrs on record
Day of Defeat: Source
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Deathmatch Classic
Deus Ex: Game of the Year Edition
Deus Ex: Invisible War
Disciples II Galleans Return
Disciples II Rise of the Elves
Doom 2
Doom 3
Doom 3: Resurrection of Evil
Dreamfall: The Longest Journey
Enemy Territory: QUAKE Wars
Final Doom
FlatOut
FlatOut2
Garry's Mod
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Ghost Master
GTI Racing
GUN
Half-Life
3 hrs on record
Half-Life 2
Half-Life 2: Deathmatch
1.6 hrs on record
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
Hitman 2: Silent Assassin
Hitman: Blood Money
Hitman: Codename 47
Jagged Alliance 2 Gold
Jagged Alliance 2 Gold: Unfinished Business
Joint Task Force
Mare Nostrum
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Mare Nostrum Dedicated Server
Master Levels of Doom II
Painkiller: Gold Edition
Portal
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Project: Snowblind
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
Rag Doll Kung Fu
Red Orchestra
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Return to Castle Wolfenstein
Ricochet
Shadowgrounds
SiN 1
SiN 1 Multiplayer
SiN Episodes: Emergence
Source SDK
Spear of Destiny
STALKER: Shadow of Chernobyl
Team Fortress 2
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Team Fortress Classic
The Longest Journey
The Ship
The Ship Tutorial
Thief: Deadly Shadows
Top Spin 2
Ultimate Doom
Uplink
Wolfenstein 3D
