Gravitar: Recharged

Gravitar: Recharged

View Stats:
Game not starting. Just a black screen with visible mouse cursor.
Running in Windows 10, on a 2018 Mac Mini. GPU is an Intel UHD 630. Far from the best, I'm aware, but should be able to work with this simple game. Right? Installed latest gfx drivers from Intel. Other games launch and work fine. But this one just presents me with a black screen, and a visible mouse cursor. That's it. I have a wired Xbox 360 controller attached. Tried disabling that, but still no go.. Anyone have any idea, as to what I can try?