I can set my resolution to 1280x720, but cannot press the confirm button in the options to save it. It seems like I can press every button in the menu except confirm.
Same here, makes the options useless. The bug reporter bugged out as well. I've only played a couple minutes before I gave up, but considering the issues and lack of polish I hope that this is somehow an early version, pre-alpha as it says somewhere, and not the one that's going to release in less than two weeks.
I finally figured this out and for me the answer was simple. Go to ~/.config/unity3d/ and rename voxGames to VoxGames. I don't know what happened but I know that directories are case sensitive in Ubuntu.
File and directory names are case sensitive on Linux in general, so if this helped it's a simple typo that the dev didn't notice on Windows (because that's not case sensitive for the most part).
sharp find! I'll see what happened there and fix that up.
I've fixed this and reverted it back to a lower case v, this will take effect in the next patch 0.5.06