Age of Chivalry

Alien Swarm

America's Army 3

ARMA 2
ARMA 2: Operation Arrowhead
ARMA 2: Private Military Company

Battlefield 2

Battlefield: Bad Company 2

BioShock

Blazing Angels: Squadrons of WWII

Borderlands
Borderlands DLC: Claptrap’s New Robot Revolution

Call of Duty: Black Ops

Call of Duty: Black Ops - Multiplayer

Call of Duty: Modern Warfare 2
Call of Duty: Modern Warfare 2 - Multiplayer

Cities XL - Limited Edition

City of Heroes

Command and Conquer 3: Kane's Wrath
Command and Conquer 3: Tiberium Wars

Counter-Strike
Counter-Strike: Source
Counter-Strike: Source Beta

Crysis
Crysis Warhead
Crysis Wars

Darwinia

Day of Defeat
Day of Defeat: Source

Deathmatch Classic

Demolition Company

Deus Ex: Game of the Year Edition

Deus Ex: Invisible War

DOOM 3
DOOM 3: Resurrection of Evil

Dragon Age: Origins

Eternal Silence

Evil Genius

Fallout 3 - Game of the Year Edition

Frontlines: Fuel of War

Garry's Mod

Ghost Master

Grand Theft Auto
Grand Theft Auto 2
Grand Theft Auto: San Andreas
Grand Theft Auto: Vice City
Grand Theft Auto III
Grand Theft Auto IV

Hacker Evolution

Hacker Evolution - Untold

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 Deathmatch: Source

Hitman 2: Silent Assassin
Hitman: Blood Money
Hitman: Codename 47

Indiana Jones and the Fate of Atlantis

James Cameron’s Avatar™: The Game

Just Cause 2

Killing Floor
Killing Floor Mod: Defence Alliance 2

League of Legends

Left 4 Dead
Left 4 Dead 2

Metro 2033

Moonbase Alpha

Operation Flashpoint: Dragon Rising

Portal

Prototype

R.U.S.E

Ricochet

Section 8

Sid Meier's Civilization IV
Sid Meier's Civilization IV
Sid Meier's Civilization IV: Beyond the Sword
Sid Meier's Civilization IV: Beyond the Sword
Sid Meier's Civilization IV: Colonization
Sid Meier's Civilization IV: Colonization
Sid Meier's Civilization IV: Warlords
Sid Meier's Civilization IV: Warlords
Sid Meier's Civilization V

SimCity 4 Deluxe

SiN
SiN Episodes: Emergence
SiN Multiplayer

Spellforce 2: Gold Edition

Star Trek Online

Star Wars: Empire at War Gold
Star Wars: Knights of the Old Republic
Star Wars: The Force Unleashed

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 Classic

The Dig

Tom Clancy's H.A.W.X.

Torchlight

TrackMania United

Tropico 3 - Steam Special Edition
Tropico 3: Absolute Power

Unreal Tournament 3: Black Edition

Uplink

Vampire: The Masquerade - Bloodlines

X-COM: Apocalypse
X-COM: Enforcer
X-COM: Interceptor
X-COM: Terror from the Deep
X-COM: UFO Defense

X3: Reunion
X3: Terran Conflict
X3: Terran Conflict

Zombie Panic Source