Check if your sourcelist is fully enable (universe, multiverse + source).
Next, to install the libs, -devs and tools to make Nazghul working.
Code:
sudo aptitude update && sudo aptitude safe-upgrade sudo aptitude install build-essential checkinstall sudo aptitude install libsdl1.2-dev libsdl-image1.2-dev
Done.
Download Nazgul source to your Desktop.
Download
Code:
cd ~/Desktop tar zxfv nazghul_0_6_0.tar.gz cd nazghul_0_6_0 ./configure make sudo checkinstall
Done.
Save nazghul.png to your Desktop.

cd ~/Desktop sudo mv nazghul.png /usr/local/share/nazghul sudo nano /usr/share/applications/nazghul.desktop
add the following;
[Desktop Entry]
Name=Nazghul
Comment=Nazghul is a computer role-playing game (CRPG) engine.
Exec=haxima.sh
Icon=/usr/local/share/nazghul/nazghul.png
Terminal=false
Type=Application
Categories=Application;Game;
Save [ctrl] + [o] and exit [ctrl] + [x].
You can now launch Nazghul by Applications tab —> Games —> Nazghul
Or by typing haxima.sh in the terminal.
Enjoy!