And before the Apple II, the Apple I and Kim-I.
As a sokoban lover I'd love one for the Apple I or the Kim-I over serial, but the 1K RAM limit looks tiny.
But you can always create several tapes/ROMs with different level sets...
And don't forget the Nascom 1 and 2 (everyone has unfortunately)
https://www.reddit.com/r/vintagecomputing/comments/fhfmzn/th...
Nice bits of kit, but as I am old now.... my eyes don't work as well as needed for these small screens.