Minetest Δ (“Minetest Delta”) is a fork of Minetest-c55 <http://celeron.55.lt/~celeron55/minetest/>, incorporating experimental features that are not (yet) included in Minetest-c55.

New features:
* Submenu for key assignment (changes apply after restart)

New bricks:
* Sandstone (crafted from 4 sand, yields sand)
* Cactus (plant that grows on sand)
* Clay (found in sand at sea level, yields 4 lumps of clay)
* Brick (made from 4 clay bricks, yields 4 clay bricks)
* Papyrus (plant that grows in shallow water, yields paper)
* Book shelf (made from 6 wood and 3 books, sandwhiched)
* Rail (made from 6 iron ingots and 3 sticks, vertically sandwhiched)

New materials:
* Lump of clay
* Clay brick (made from lumps of clay in the furnace)
* Paper
* Book (made from 3 paper)

Alternate graphics:
* Player
* Omsk birds (instead of Oerkki ghosts)
* Rat
* Glass

Building on GNU/Linux or OS X:
    cmake . -DRUN_IN_PLACE=1
    make -j2