Behold…
The C64 Mini!
https://thec64.com/ & https://thec64.com/games/ (there are 64 built-in games - though you can add more)
A review by ‘TheRealCatGoneCrazy’ - https://www.youtube.com/watch?v=XWfuO6LYRfY
IGN’s review - http://uk.ign.com/articles/2018/03/30/the-c64-mini-review
Guardian review - https://www.theguardian.com/games/2018/mar/28/c64-commodore-64-mini-review-everyones-a-wally-boulder-dash-speedball
£64 seems a bit steep - may wait a little until it comes down in price. One for the core nostalgia buffs maybe?