The goal is for Mister X to stay hidden until the end of the game. The task
for the remaining players or detectives is to find him and to enter the zone where he is
presently hiding. The map of the city shows all the transport service lines.
Not all lines go all places and that is your only clue to where Mr. X is, since you know
his mode of travel at each turn but not where he went. It's like the game of Clue,
but with a twist.
