https://www.youtube.com/watch?v=DvV4s4Ck_Rs
Looks impressive, but I feel it'd be tough to expand into a full game that's both fun and not just a novelty.
the draw distance is terrible but it is really impressive considering the saturn was largely ignored for a long time by the hacking community. i'd love to see some other games more appropriate for the time period put on it that never made it to the system. maybe a de-make of sonic adventure since that was originally the console it was intended for.
There's also the "world" size. At that size, there' no caves, no exploration, just a tiny island, and IMO that feels less like Minecraft and more like something that could be shaped into a standalone experience. Perhaps you could sail to other randomly generated islands. Think Sea of Thieves meets No Man's Sky.