Most fun retro console/home computer to develop for

Not old, but retro in a way, Playdate is a pretty fun machine to play with and if you want you can end up selling in their catalog (online shop both for browser and console). I have wanted to start doing something for it for the last year (im a game desginer) but i havent coded in like 5 years at this point and work leaves me exhausted to learn new stuff.