Binary package “crossfire-client-gtk2” in ubuntu lucid

GTK+ 2 Client of the game Crossfire

 Crossfire is "a multiplayer graphical arcade and adventure game made for
 the X environment with gtk installed.
 .
 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.