minimal: reqprocessor: 2.4 GHz reqgraphics: 512MB* reqmemory: 4GB Memory reqdiskspace: 20GB HD space reqsystem: 10.12.2 (as of version 1.4) reqother: The following graphics cards are not supported: ATI X1xxx series, Intel GMA series and NVIDIA 7xxx series., pre10116Users: Players using a version of OS X before 10.11 can access a compatible version of the game via the Beta tab in the game’s properties window. Select the ‘Mac 1.3 - Use for legacy OS X’ branch for a version that is compatible with 10.9.3 up to 10.11.2.