What does HackerNews think of minalac?
Generate sandbox games compatible maps with geo data from @IGNF
It's C# though, so I have no idea how to build this under Linux. I also wish there was a Minetest backend.
Similar: OSM to Minecraft[0][1] (there should be another code drop soon-ish, I heard [2] they plan to move the dev effort to GitHub by the end of the year).
[0]: https://minecraft.ign.fr/
[1]: https://github.com/ignfab-minalac/minalac
[2]: video, in French: https://peertube.openstreetmap.fr/w/cLpfr5jWd9SipjJTDKDPmj?s...
I like the fact that the tool is open source (https://github.com/ignfab-minalac/minalac as pointed by others) and uses OSM.
Screens from the world I generated for Minetest in January 2021 around Lyon, France: https://imgur.com/a/N2gVIeU
It takes a really long time to cross the generated city, even when boosting the in-game speed. That goes to show how much more smaller videogame worlds really are in general, especially when those are walkable.
Edit: looks like the source is here and you can use it to output a Minetest map