Hello Mac users, Pre-order the Mac version now on Steam which will be coming on October 26th, mark your calendar!
https://store.steampowered.com/app/1931730/Fort_Solis/
The Terra Edition is also available for pre-order, including the base game, digital artbook & original soundtrack!
https://store.steampowered.com/bundle/34109/Fort_Solis__Terra_Edition/