Morphology of Where in the World is Carmen Sandiego?

Travel

Once the player has visited the locations he or she cares to visit within a single city, it is time to try to get closer to the thief's hideout. By going to the city airport, the player is given the option to fly to one of several other cities to attempt to track down the criminal.

However, taking flights that don't get the player any closer to the thief can be quite a problem. Air travel is costly in terms of time within the game. If a player travels to the wrong city, he or she must not only pay the penalty for the flight there, but also for the return flight as well. Not every city can be reached from every other.