About ArmA III

The Mac and Linux ports were experimental and have been left alone. There's no promise of any updates to either unlike the original Windows version.

There's also several features missing, such as no full helicopter flight simulation, the anti-cheat system is missing which possibly makes multiplayer not work on anything but unprotected servers, and there's no launcher but that probably doesn't affect anything significantly. The Linux and Mac versions are not Native either as they work via a wrapper developed by Virtual Programming.