What's the matter? A player - as Mr. X - try of the game, to be in London (the other player / s) taken or not circled by detectives. The charm is that while Mr. can always see where reside the detectives, but he himself remains invisible and is shown only at different times of the game - the rest of the time to know about the detectives only, which Mr. X has travels.
The detectives try to understand So where Mr. X could be because the opportunities to take a taxi (for short distance) other are on the field as by bus or subway.
Surprisingly this is often how difficult it is for both sides to win. Often one thinks at first that as detectives have no chance because the possibilities of Mr. X seems to be limitless. The playing field is so well made that there are areas in every area of London, where escape is very difficult; Mr. X has driven forth there once, it will be an uphill battle ...
The appeal of the game is therefore the ignorance of the detectives (which could have made Mr. X?) As well as Mr. X (as the detectives will proceed?). Communication among the detectives here is an absolute requirement to drive a joint strategy. Mr. X is, however, rather sit quietly while pursuing discussions passively and possibly incorporate in its approach.
Last but not least, the game is also so beautiful, because you play in 'Original London': It's always nice to see where in London are what attractions.