Changelog for update GOG-9 (Mac) (added 16 November 2015):

- We've updated the Mac installer for Sid Meier's Alpha Centauri to be compatible with Mac OS X 10.11 (El Capitan)
- This update means that disabling the System Integrity Protection feature is no longer required.

Changelog for update GOG-14 (Mac) (added 12 February 2016):

- We've updated the Mac version of Sid Meier's Alpha Centauri.
- Fixed an issue with saving. The game should now save & load properly
- Fixed an issue where the game's configuration settings (graphics, audio, etc.) would not be saved. They should work as intended now.

Changelog for Update (added 23 October 2017):

- We have updated the Mac version of Sid Meier's Alpha Centauri to be compatible with OSX 10.13 High Sierra.
- For older versions of OSX (10.12 and older), we have included the Legacy version of the game available in the Patches section.