If you are looking for a block-builder to play together.
Luanti is a good option.
No spyware, free cost, no AI, heaps of mods/gamemodes, helpful community, and fun.
I've seen 80 kids easily learn and play cooperatively with Luanti(previously called minetest).
* One keybind not mentioned at the bottom is V for minimap views.
** The Mineclonia game mode tries to be similar to the MineCraft way of gameplay.