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nov 17, 2009 - "Left 4 Dead 2" released

Description:

A sequel to "Left 4 Dead", L4D2 made improvements and added more content. It was eventually updated to include all of the original "Left 4 Dead"

Added to timeline:

Valve Corporation Timeline

ByConnor Callahan
22 Oct 2019
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Date:

nov 17, 2009
Now
~ 15 years ago
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