crossfire-client binary package in Ubuntu Focal amd64

 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'.
 .
 To play the game you'll need to have access to a local or remote
 server.

Source package