Valve the company behind the games such as Half Life and Half Life 2 is located in Bellevue, Washington. They are a exciting and dynamic company well known for picking up mods as retail games and welcoming budding game designers to there head office for tours.
The Source engine is a 3D game engine developed by Valve Corporation. Its unique features include a large degree of modularity and flexibility, an artist-driven,...
The Quake Based engine developed by valve to power there world famous game Half Life, it's expansions, and many more.