LibreQuake
LibreQuake is a free and open source Quake remake with art under the BSD license.
The LibreQuake project aims to create a complete, free content first-person shooter game, but LibreQuake by itself is just the raw material for a game. It must be paired with a compatible engine to be played.
To play LibreQuake, we will need both: game data and modern Quake engine.
LibreQuake - game data
Create ~/.librequake directory
mkdir ~/.librequake
Get the latest full.zip file from Download/Releases page, unzip it and put id1 directory into ~/.librequake/
Modern Quake engine
There are several modern engines available - two of them are available from Mabox repo - Ironwail and Quakespasm.
Ironwail
Ironwail engine installation (recommended):
yay ironwail
Quakespasm
Alternatively, we can install Quakespasm engine:
yay quakespasm
Fix/create menu item (launcher)
Ironwail
We will modify ironwail.desktop file provided by ironwail package.
Copy it to ~/.local/share/applications/
cp /usr/share/applications/ironwail.desktop ~/.local/share/applications/
And edit it like:
[Desktop Entry]
Type=Application
Name=LibreQuake (Ironwail)
Keywords=quake;ironwail
Icon=ironwail
Exec=ironwail -basedir ~/.librequake
Categories=Game;Shooter;
Comment=LibreQuake (Ironwail engine)
Terminal=false
StartupNotify=true
Exec= line is most important!
Quakespasm
For Quakespasm click here
We will modify quakespasm.desktop file provided by quakespasm package.
Copy it to ~/.local/share/applications/
cp /usr/share/applications/quakespasm.desktop ~/.local/share/applications/
And edit like that:
[Desktop Entry]
Type=Application
Name=LibreQuake (Quakespasm)
Icon=quakespasm
Exec=quakespasm -basedir ~/.librequake
Categories=Game;Shooter;
Comment=LibreQuake (quakespasm engine)
Terminal=false
StartupNotify=true
Thats it!
Now you can run LibreQuake from menu.
Enjoy! 
