That is weird! I grabbed the demo zip from here, on itch, and I’m running my device on Sonoma atm. It might be something to do with the intel vs silicone chips, maybe? 
Actually, it’s not related to the OS but to the chip. The game only works on Mac M1 and above, but not on Intel Macs (because I only have a m2 to build and test).
As armatures said, I think it would be a big challenge to make it compatible with Intels chips :/