In addition to the main three games the Doomsday Engine supports and other modifications of the classic games of the series Doom.
Doomsday Engine is a modular application, using plugins in game you can add different graphical effects, support for high-resolution and detailed textures, stereoscopic view, 3D models of objects and 3D sound effects, reverb, additional sound effects, MIDI music and more.
When you start the multiplayer mode Doomsday Engine automatically checks the availability of required resources (compares local and on the server), it supports multiplayer mode up to 16 players via local area network (servers are determined automatically) or via the Internet.
https://manual.dengine.net/guide - and find in internet IWAD files.
sudo add-apt-repository ppa:sjke/doomsday sudo apt update sudo apt install doomsday-stable
Add-ons collection is here.
May the Force be with you,