Valve

Valve is an entertainment software and technology company founded in 1996. In addition to creating several of the world's most award-winning games, Valve is also a developer of leading-edge technologies including the Source game engine and Steam, the premier online gaming platform.

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Half-Life 2
Paid
Pick up the crowbar of research scientist Gordon Freeman and rescue the world from the wrong he unleashed back at Black Mesa.
Windows
Team Fortress 2
Free
Team Fortress 2: Timeless Free-to-Play Combat
Windows
Half-Life 2: Episode One
Paid
Half-Life 2: Episode One Battle for City 17
Windows
Half-Life Complete
Paid
Valve's Half-Life Franchise: A Definitive Collection
Windows
Portal
Paid
Solve physical puzzles and challenges by opening portals to maneuvering objects through space.
Windows
Counter Strike: Global Offensive
Paid
Fight as a terrorist or counter-terrorist on various classic and modern maps.
Windows
Counter Strike: Source
Paid
Play a classic game of Counter-Strike in a source engine.
Windows
Steam
Free
Steam: The Ultimate PC Gaming Platform
Windows
Dota 2
Free
Dota: Deep Strategy Meets Stunning Visuals
Windows
Source Filmmaker
Free
Source Filmmaker: Create Movies in the Source Engine
Windows
Steam Chat
Free
Take your Steam friends, groups, and conversations with you wherever you go.
Android
Steam Mobile
Free
Comprehensive App for Gamers on iPhone
iOS
SteamOS Custom
Free
Combine the rock-solid architecture of Linux with a gaming experience built for the big screen.
Linux
Alien Swarm
Free
Team up with your friends and hunt down the bugs with squad-level tactics.
Windows
Half-Life 2
Paid
Half-Life 2: A Gripping Sci-Fi Shooter Adventure
Windows
Steam
Free
Play, connect, and create various content.
Mac
Left 4 Dead 2
Paid
Play co-operative action horror FPS.
Windows
SteamOS Default
Free
Combine the rock-solid architecture of Linux with a gaming experience built for the big screen.
Linux
Half-Life 2: Episode Two Research and Development Mod
Free
Half-Life 2 Mod Focuses on Puzzles, Gravity Gun
Windows
Valve Complete Pack
Paid
Valve's Ultimate Game Bundle Delivers Immense Value
Windows
Gunman Chronicles Datacore map
Free
Datacore Map Added to Gunman Chronicles
Windows
RoboBlitz demo
Free
RoboBlitz: Humorous Physics Action Adventure
Windows
Counter-Strike Condition Zero
Paid
Counter-Strike: Condition Zero Offers Extensive Single and Multiplayer Content
Windows