1.) Download and extract Minetest from GitHUb.

2.) ENter this into the Terminal:

sudo apt-get install build-essential libirrlicht-dev cmake libbz2-dev libpng12-dev libjpeg8-dev libxxf86vm-dev libgl1-mesa-dev libsqlite3-dev libogg-dev libvorbis-dev libopenal-dev

When it asks for your password, enter it: it won't appear.

3.) Type cd <then drag you minetest source folder into the terminal, the Minetest path will appear here.>

4.) Enter this into the terminal:

cmake . -DRUN_IN_PLACE=1

then

make -j2

Wait a while for this.

5.) Enter this command:

cd bin

then ./minetest