Install crossfire-server by entering the following commands in the terminal:
sudo apt update sudo apt install crossfire-server
Description:
Server for Crossfire Games
This is the server program for the crossfire client . Crossfire is a multiplayer graphical arcade and adventure game made for the X environment. It has certain flavours from other games, especially Gauntlet (TM) and Nethack/Moria. Any number of players can move around in their own window, finding and using items and battle monsters. They can choose to cooperate or compete in the same "world".
Homepage: http://crossfire.real-time.com/
Version: 1.71.0+dfsg1-1build1
Section: universe/games