Valve is an entertainment software and technology company founded in 1996 and based in Bellevue, Washington. The company’s debut title, Half-Life®, has won over 50 Game of the Year Awards and was named "Best PC Game Ever" in the November 1999, October 2001, and April 2005 issues of PC Gamer, the world's best-selling PC games magazine.

Valve's portfolio of entertainment titles also includes Half-Life® 2, Counter-Strike®, Day of Defeat®, Team Fortress®, and Portal™. This portfolio of titles accounts for over 20 million retail units sold worldwide, and Valve games account for over 80% of the PC online action market.

In addition to producing best selling entertainment titles, Valve is a developer of leading-edge technologies including the Source® game engine and Steam®, a leading platform for digital content with over 10 million registered users.

Today, Valve is composed of just over 160 of the industry's best artists, programmers, and writers. In the company's 12-year history, it has risen from "unlikely new entry" to industry leader, producing a string of best selling and critically acclaimed PC products and technologies.