Minetest: https://www.minetest.net/ https://www.minetest.net/. It’s a bit similar to “just use Minecraft” because it comes packaged with a barebones “game” — a

Minetest: https://www.minetest.net/ https://www.minetest.net/. It’s a bit similar to “just use Minecraft” because it comes packaged with a barebones “game” — a mapgen algorithm and enough Lua to allow you to run around, mine, and craft, but stops short of adding non-player mobs (but you can find plenty of mods to add them, and adding mods — really just Lua scripts + packaging and optionally meshes, textures, etc. — is what it’s designed for). “Available for Windows, macOS, GNU/Linux, FreeBSD, OpenBSD, DragonFly BSD, and Android”.