C' est quoi ? Valve DLL?

Company Valve, founded in 1996 by Gabe Newell and Mike Harrington, is an American video game development and publishing company known for its contributions to the gaming industry. The company is headquartered in Bellevue, Washington. Valued for its innovative approaches and emphasis on player community engagement, Valve has developed or published numerous titles such as Half-Life, Portal, Counter-Strike, Dota 2, and Steam, which have significantly influenced the gaming landscape.