 "Left 4 Dead" went gold on November 13, 2008, and was released on November 18, 2008, in North America; and on November 21, 2008, in Europe to coincide with the tenth anniversary of the release of "Half-Life".Valve released a server patch in December 2008 to stop players on Xbox Live from using PC-style cheats.A spokesman from Valve said, "The fix is designed to halt the cheating behavior on the dedicated servers, which accounts for the majority of the co-op and versus modes of play."