I'm not sure that's the case. I have a few other renPY and Unity based games that are working okay. Some haven't been updated in years, while others are newly updated.
Viewing post in The Tomb of King Pervy (in development) comments
I mean 10.16, if that’s Monterey. I can’t keep track. I can make releases for 10.15 (Catalina) myself as a registered developer. They appear to run on 10.15 only. The updates I’m releasing now are for 10.9, and I can’t code sign them because apple prevents it for these old os’s.
If you can run games under 10.16 and they are open-source then please let me know. That may be a lead for me.
Oh weird, so I'm actually on Ventura (13.4.1). I am running a couple other Unity games on this version.
Some renPY games I play regularly include: Lustful Desires, Lust Hunter, Outland Wanderer.
The main other Unity based game I'm playing/keeping up with now is: Monster Souls.
Not sure if this is helpful?
It looks like Ventura will run non-codesigned apps again, such has not been allowed since Mojave (if I have my versions right). Possibly the result of some legal action?
It still won’t run until I find out what they did to the OS to effectively block it. I don’t have a ventura-capable computer. At least that explains how some people are able to run it under wine.