Yesterday when Value Software shipped Steam on the Mac, previous owners of the PC Steam version of Sid Meier’s Civilization IV, Civilization IV: Beyond the Sword, Civilization IV: Warlords, Sid Meier’s Civilization IV: Colonization, or Sid Meier’s Civilization IV: The Complete Edition did not have access to their games when logging in on a Mac.

But as of now, upon logging into Steam, those owners will have access to the Mac version of their games, right in their Steam library.