I much prefer just writing stuff for Luanti (formerly minetest).
You can, pretty much, get the Minecraft experience by downloading mods. Or just use the VoxeLibre game mod.
https://content.luanti.org/packages/Wuzzy/mineclone2/
The mods are written in lua and you can find the source code for most of them.
One I like is Zoonami which turns the experience into a Pokemon like game.
https://github.com/luanti-org/luanti
Zoonami will achieve what Tuxemon didn't.
does something like AllTheMods 10 exist for Luanti? Or Meatballcraft?
The Luanti client lets you search and install mods from content.luanti.org
It differentiates between mods and games. A game changes the core game to be much more different, but sometimes a game is just a collection of some other mods.
https://content.luanti.org/packages/?type=game
Personally, I find it more fun to just go and click on about 6 to 8 mods that are interesting and see how the game goes.
https://content.luanti.org/packages/?type=mod
Some of my picks are...
https://content.luanti.org/packages/ElCeejo/animalia/
https://content.luanti.org/packages/random-wizard/gear_up/
https://content.luanti.org/packages/TenPlus1/farming/
https://content.luanti.org/packages/FreeLikeGNU/goblins/