LZDoom is based on GZDoom and UZDoom. It does not provide all current UZDoom features but in turn is capable of running the hardware renderer on older hardware which does not support modern OpenGL features.
LZDoom comes with 2 optional UIs, a feature-rich one enabled by installing GTK3, and a more lightweight one using KDialog.
Running LZDoom without installed UIs from command-line will provide a simple .wad selection menu.
These interfaces require compatible game data (.wad, .pk3 or other) to be present to work properly.
The binaries will look for .wad files in:
* ~/config/non-packaged/data/games/lzdoom
* ~/config/non-packaged/data/games/doom
* ~/config/non-packaged/data/doomdata
* ~/config/non-packaged/data/doom
* Any compatible game data package
The binaries can be also used via command-line with the -iwad command.
Example: 'LZDoom -iwad /path/to/doom.wad'