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Valve logo

The Valve Logo.

Valve Corporation (shortened to and stylized as VALVE) is a video game developer and distrubutor company founded in 1996 by Gabe Newell and Mike Harrington. It is known for the Half-Life series of games, as well as for Team Fortress 2, the Left 4 Dead series, and others. They also developed Steam, the digital distribution platform with which they distribute their games and games from third-party developers, including Garry's Mod (built from their Source Engine).