Steam Games:

 Alien Swarm
 Battlefield: Bad Company 2*
 Call of Duty: Black Ops
 Call of Duty: Modern Warfare 2*
 Command and Conquer 4: Tiberian Twilight
 Command and Conquer: Red Alert 3
 Command and Conquer: Red Alert 3 - Uprising
 Counter-Strike
 Counter-Strike: Source
 Day of Defeat
 Day of Defeat: Source*
 Deathmatch Classic
 Flight Control HD
 Garry's Mod
 Half-Life
 Half-Life 2
 Half-Life 2: Deathmatch
 Half-Life 2: Episode One
 Half-Life 2: Episode Two
 Half-Life 2: Lost Coast
 Half-Life: Blue Shift
 Half-Life: Opposing Force
 Half-Life: Source
 Half-Life Deathmatch: Source
 Killing Floor
 Killing Floor Mod: Defence Alliance 2
 Left 4 Dead
 Left 4 Dead 2
 Monday Night Combat
 Monkey Island 2: Special Edition
 Oddworld: Abe's Exoddus
 Oddworld: Abe's Oddysee
 Plants vs. Zombies: Game of the Year
 Poker Night at the Inventory
 Portal
 Ricochet
 S.T.A.L.K.E.R.: Shadow of Chernobyl
 Star Wars - Battlefront II
 Tales of Monkey Island: Chapter 1 - Launch of the Screaming Narwhal
 Tales of Monkey Island: Chapter 2 - The Siege of Spinner Cay
 Tales of Monkey Island: Chapter 3 - Lair of the Leviathan
 Tales of Monkey Island: Chapter 4 - The Trial and Execution of Guybrush Threepwood
 Tales of Monkey Island: Chapter 5 - Rise of the Pirate God
 Team Fortress 2*
 Team Fortress Classic
 The Secret of Monkey Island: Special Edition
 The Witcher: Enhanced Edition
 Torchlight
 World of Goo

 Non Steam Games:

 Battlefield 2 Collection (BF2, BF2 Special Forces, BF2 Euro Force and BF2 Armoured Fury
 Battlefield 2142
 Borderlands
 Call of Duty 4 - Modern Warfare*
 Call of Duty 5 - World At War
 Command and Conquer 1 + The Covert Operations
 Command and Conquer 3 Tiberian Wars + Kane Wars
 Command and Conquer Generals + Zero Hour
 Command and Conquer Red Alert + Aftermath + Countertsirke
 Command and Conquer Red Alert 2 + Yuri's Revenge
 Command and Conquer Renegade
 Command and Conquer Tiberian Sun + Firestorm
 Crysis
 Dead Rising 2
 Dead Space
 Dead Space 2
 Fall Out 3
 Flight Simulator 2004
 Grand Theft Auto 3
 Grid
 Halo*
 Lego Stars Wars 2 - The Original Trilogy
 Lord of the Rings - War Of The Ring
 Minecraft
 Quake 4
 Quake Wars Enemy Territory
 Serious Sam 2
 Serious Sam Gold Edition
 Tom Clancy's Rainbow Six Vegas 2
 Uinreal Tournament 2004
 Unreal Tournament
 Unreal Tournament 3
 Viva Pinata
 World Of Warcraft + Burning Crusade + Wrath of the Lich King + Cataclysm (Unsubscribed at the moment)
 Worms 2
 Worms Reloaded