I am having the same issue too which really sucks because I was super interested in playing :,(
Apologies for the inconvenience, you may see my previous reply for suggestions, but to reiterate:
The game may have runtime issues depending on the MacOS version. This can vary with older versions.
Here’s some relevant points from the Installation Tips on the store page, hope this helps:
- Older mac OS versions have issues with the engine not saving + runtime issues, but this largely varies on the MacOS
- Other alternatives include using a virtual machine to play, ie VMware, Wine, VirtualBox, etc