Minetest Δ (“Minetest Delta”) is a fork of Minetest-c55 <http://celeron.55.lt/~celeron55/minetest/>, which incorporated experimental features that were not included in Minetest-c55. Development of Minetest Δ has ceased on August 04, 2011. As every feature of Minetest Δ was merged upstream, it is now considered obsolete. Minetest Δ still contains graphics different from Minetest-c55: * Player * Omsk birds (instead of Oerkki ghosts) * Rat * Glass * Heart Building on GNU/Linux or OS X: cmake . -DRUN_IN_PLACE=1 make -j2 The “upstream” branch contains vanilla minetest-c55, created using: hg-fast-export -r ~/share/src/games/minetest -o upstream git push origin upstream/master:upstream -f All new/replaced graphics done by erlehmann are dual-licensed under GPL (version 2 or, at your option, any later version) and CC-BY-SA (version 3.0 or, at your option, any later version).