Hey there! Your game looks beautiful and amazing-- I cannot wait to play it!!
Unfortunately, though it loads okay on my mac and I can press 'new game' it seems to no be able to be able to handle it after that. No error message, just an inability to finish load up the visuals and only a couple of jerky frames of suggested movement. It's the kind of thing you would expect to see with something that was too processor-intensive, but I'm surprised because my mac is pretty new? Anyway, no pressure-- it sounds like you've done a great job anyway, but if you are curious here are my specs:
MacBook Pro (13-inch, 2016)
Processor: 2.9 GHz Intel Core i5
Memory: 8 GB 2133 MHz LPDDR3
Graphics: Intel Iris Graphics 550 1536 MB
OS: 'high sierra' version 10.13.6 (17G65)
PS I'm at the correct resolution, and turning the graphics quality all the way down to low seems to make no difference. Thanks!