Below is a list of licenses for various files/directories. Unless otherwise stated, all code is licensed under the MIT license.

textures/default:
  Based on those in https://github.com/minetest/minetest_game/tree/master/mods/default.
  The original textures were made by BlockMen, licensed under CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0/)