About |
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Official Name Valve Corporation |
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Founded August 24, 1996 |
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HQ Address Bellevue, Washington, United States |
| 2006-11-17 | Trackmania United |
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| 1998-11-19 | Half-Life |
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| 2004-11-16 | Half-Life® 2 |
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| 2007-10-10 | Portal™ |
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| 2007-10-10 | Team Fortress 2 |
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| 2008-11-17 | Left 4 Dead |
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| 2009-11-17 | Left 4 Dead 2 |
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| 2011-04-18 | Portal 2 |
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| 2012-08-02 | Counter-Strike: Global Offensive |
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United States