luanti (Open-source infinite-world voxel game)

Luanti (formerly Minetest) is a free open source voxel game-creation
platform with easy modding and game creation.

By default, this SlackBuild builds luanti without a server. If you
wish to build luanti with a server, you should set the BUILD_SERVER
environment variable when running this script.
  BUILD_SERVER=yes sh luanti.SlackBuild