About Valve SoftwareValve is an entertainment software and technology company founded in 1996 by former Microsoft employees Gabe Newell and Mike Harrington. Based in Bellevue, Washington, the company first became famous with the 1998 release of its debut title, Half-Life, which has received worldwide critical acclaim.
Valve soon expanded the Half-Life franchise with a sequel and Half-Life 2 Episodes 1 and 2. New games were also released such as zombie shooters Left 4 Dead and Left 4 Dead 2, the multiplayer combat franchise Team Fortress 2, the #1 online action game Counter-Strike and the award-winning puzzlers Portal and Portal 2.
In addition to producing best selling entertainment titles, Valve is a developer of leading-edge technologies including Steam. Steam has quickly become the world's largest online gaming platform. Steam guarantees instant access to more than 1,800 game titles and connects its 35 million active users to each other with community features. Through Steam, fans can easily buy, play, share, modify, and build communities around Valve products as well as titles from other independent game studios.
In addition to Steam, there is Source, their custom built game engine which all their games since Half-Life 2 have taken advantage of. Its sophisticated character animation, advanced AI, real-world physics, shader-based rendering, and super extensibility have made it one of the most flexible, comprehensive, and powerful game development environments available.