Minetest is a minecraft-inspired game written from scratch and licensed under the LGPL (version 2.1 or later). It supports both survival and creative modes along with multiplayer support, dynamic lighting, and an "infinite" map generator.
This snap will be updated to Minetest 5.0 when it is released, if you want to play on 0.4 servers after the release I recommend installing minetest-luk3yx-4.
Credits: Snappy playpen: Initial snap (modified since then) Minetest: Creating... well... Minetest. Now-defunct Minetest servers: Screenshots.
Note: If you are on an armhf device, the builds are currently created with build.snapcraft.io, and I cannot test them. If there are any errors with the builds, please file a GitHub issue.