http://www.minetest.net/ http://www.minetest.net/ (LGPL) http://manicdigger.github.io/ http://manicdigger.github.io/ (Unlicense) I am pretty sure there are mo

http://www.minetest.net/ http://www.minetest.net/ (LGPL) http://manicdigger.github.io/ http://manicdigger.github.io/ (Unlicense) I am pretty sure there are more out there and as far as I know minetest is closest to minecraft with this mod for for redstone circuitry thing (https://forum.minetest.net/viewtopic.php?f=11&t=628 https://forum.minetest.net/viewtopic.php?f=11&t=628).