Recommended:

OS:OS X 10.12.2 (as of version 1.1.1)
Processor:2.4 GHz
Memory:8GB Memory
Graphics:1GB*
Hard Drive:24 GB HD space
Other Requirements:The following graphics cards are not supported: ATI X1xxx series, ATI HD2xxx series, Intel GMA series, Intel HD3000, Intel HD4000, NVIDIA 7xxx series, NVIDIA 8xxx series, NVIDIA 9xxx series, NVIDIA 1xx series and NVIDIA 3xx series.
Pre 10.11.6 Users:Players using a version of OS X before 10.11.6 can access a compatible version of the game via the Beta tab in the game’s properties window. Select the ‘mac_retail_101 - Mac 10.11.5 or older only' branch for a version that is compatible with 10.9.3 up to 10.11.2.

CMP