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)
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