In the forums on Steam someone is complaining it too. It seems as if there is no fullscreen for Mac now.

Still no full screen on the mac. Has anyone seen a note from the developers about a fix / work-around?

Darn man, I just really hope that the issue is that they're so small that they don't have anyone to do PR or anything of the sort because I have money burning in my wallet to play this darn game, but with a bevy of other issues and now this - I just can't pull the trigger on it. If it was just a few of them I'd be good.

Yeah. I wouldn't pull the trigger. If I'd known about this issue, I wouldn't have purchased.

I've got a PC, so I know it does work in fullscreen. Unfortunatly I'm now on the road and had planned to play this game but it is not tollerable on a mac. :(

This feature would be great. It's kind of a small game window on a 5k imac.

Still the same issue after 1.033 patch which mentions in the changelog that they've fixed the fullscreen issue.

Unfortunately it is still not fixed. However I just noticed that whilst the changelog says it 1.033, the in-game version number is still showing as 1.032.

I guess the actual patching was not delivered correctly. Can any one on a mac confirm they can now play fullscreen ?

Yay! 1.034 finally arrived - it fixes the fullscreen / resolution issue on the mac