Hundreds, if not thousands, across all kinds of retro consoles! Atari all the way through Gameboys, NES up to PS1. The default OS seems ok, but I only tried it briefly before switching over to GarlicOS which everyone seemed to be keen on. This guide was super helpful in getting me started.

Side by side pic here. I was quite surprised at just how small this thing is, and if the Miyoo is even smaller, I’m glad I opted for this!

The screen is indeed very nice.

I’ve got a lot of mileage out of Pocket City 2.