Minetest allows cross-play between 5 platforms

Supported crossplay platforms
Release Date: Nov 2, 2010
Official Website: Link
Summary:
Minetest is a near-infinite-world block sandbox game and a game engine, inspired by InfiniMiner, Minecraft, and the like.
Genres and Themes: Adventure Open world
Supported crossplay platforms:
Minetest is supporting cross-play across multiple platforms. Currently it is possible to play together with your friends on Windows PC, Android, iOS, Linux and Mac.
Supported game modes:
  • Single player
  • Multiplayer
  • Co-operative
Supported player perspectives:
  • Third person