Team Fortress 2
There are hundreds of weapons, hats and more to collect, craft, buy and trade.
Half-Life 2
Next follow-up in the series of Half-Life.
Day of Defeat
Enlist in an intense brand of Axis vs. Allied teamplay set in the WWII.
Half-Life Dedicated Server
Set up your own dedicated server.
Counter Strike - Source
This is a first person shooter game and is a complete remake of Counter-Strike.
Team Fortress Classic
What the name says, a Classic.
Source Dedicated Server
Srcds allows you to to serve an online game in a virtual environment.
Counter-Strike: Global Offensive
It is an objective-based multiplayer first-person shooter.
Source SDK Base
A tool, shared between all owners of Valve Source games and locked to a particular engine.
Source SDK
A game which combines leading-edge character animation and real-world physics.
Half-Life Complete
Collection of all the Half Life game titles including Half-Life 2: Episode Two.
Portal: The First Slice
Portal is one of the most innovative video games released in the past few years.
Half-Life 2: Lost Coast
Sort of an add-on for Half Life 2.
Half-Life 2: Episode One
Half-Life 2: Episode 1 is the sequel to the first Half-Life 2 game.
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Left 4 Dead + 6 DLC
A new kind of action game that features single player, co-op and multiplayer.
Alien Swarm
Free to play action game with a cooperative mode.