Bought the game. 

Downloaded. 

Wouldn't play initially, had the bouncing installer crash. Fixed that by manulaly running the MonoFramework-MDK-4.8.0.macos10.xamarin.universal.pkg file manually. Played it once for around 45 minutes. Then it crashed. Just turned my laptop off (plugged in, not too hot). Since then game not worked. Crashing requiring restart of laptop, in a variety of different places prior to game initiation whether that be before the SEGA logo, after it, main menu or the loading post this. 

I have a 2018 Macbook Pro.

2.7 GHz intel Core i7

16GB 2133 Mhz RAM

Intel Iris Plus Gaphics 655 1536 MB

macOS Mojave 10.14.2

Thus far I'm greatly disappointed by such a poorly functional product. 

good luck

Clearly luck isn't getting me anywhere.

How can this be considered an acceptable standrad of a product, when it just doesn't work?