Valve is an American video game development and digital distribution company based in Bellevue, Washington, U.S.
They are well known for their first-person shooters and long development cycles, as well as extreme community support. They also created the Source engine, a mod-friendly engine, as well as having previous modders on staff.
- Half-Life (1998 (PC), 2001(PS2))
- Counter-Strike (2000 (Retail) 2004(XBOX))
- Day of Defeat (2003 (Retail))
- Portal (2007 (PC))
- Left 4 Dead (2008 (PC, Xbox 360))
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