Hey there, I am testing the macOS build of this game.
When I launch it, it automatically renders the start menu in full-screen, but it only renders the top left corner of the screen, stretched out to fill the whole screen. This is what my entire full screen looks like when attempting play the game:
I wonder if I could fix the resolution myself in the settings, but I can't see the menu because of how it's being rendered, and there does not appear to be any visible way of forcing this game to launch in windowed mode, or to specify my own custom resolution choice in a settings text file.
Of course I suppose I could just play the Windows version since I tested and it works, but since you explicitly included a macOS build, I felt like I should report it.