doom
Classic open-source boomer shooter featuring modding and multiplayer. tldr-pages
On several platforms
Several platforms
Classic open-source boomer shooter featuring modding and multiplayer. zandronum-server can be replaced with almost any sourceport.
Host co-op multiplayer
zandronum-server -iwad wad +map map -host playersHost deathmatch multiplayer
zandronum-server -iwad wad +map map -host players -deathmatch