I grew up using Mac computers, and for a long time, I've wanted something that would allow me to use all those old applications and games in a more convenient setup. I now have the perfect 'retro' Mac, at least for me: an upgraded Mid-2010 Mac Mini.
This compact low-power
TIL Snow Leopard is retro.
It is 15 years old, but the “retro” is more about running apps and games from as old as 2001 natively.