https://www.retroarch.com/index.php?page=platforms

RetroArch has versions for both ARM and Intel based Mac’s. You shouldn’t have a problem playing up to Dreamcast, possibly later. There is a bit of a learning curve, but RetroArch is on pretty much everything now, and it’s worth learning.

The Sega CD had a purpose. The CD quality sound and FMVs were clearly something that couldn’t be done on a stock SNES or Genesis. But the 32x… I played one in a Funcoland once and I honestly couldn’t tell the difference between it and a normal Genesis game. Some extra superfluous scaling effects that the SNES could do natively and the Genesis could do if you were a clever programmer?