Left 4 Dead 2 - Mac Update By Austin Phoenix, 29 Jun 2016 CommentsAn update has been released for Left 4 Dead 2.- Fixed an issue on some MacBook Pro models that prevented the game from rendering correctly, resulting in a blank or white screen with game running in the background. This fix required a change to the minimum spec from MacOS 10.6.4 to MacOS 10.7 (Lion) or higher, which matches Steam's minimum spec.More Left 4 Dead 2 stories: Left 4 Dead 2 - Update Left 4 Dead 2 - Update February 18th Left 4 Dead 2 - Update February 2nd Left 4 Dead 2 - Update December 10th WindowsLinuxMac OS XGame Patch Written by Austin PhoenixSite Moderator, Walkthrough Manager and Newshound here on TSA. Moderator, Walkthrough Supervisor and Site Help Editor over on TA.Space Cowboy in my free time.