Underground Monopoly cleverly matches the classic coloured property squares to the stations and line colours of the world famous Tube map, offering you a great opportunity to navigate your way around London building your property empire as you collect Underground stations. London Underground is the most famous subway system in the world and it is also the oldest first opening in 1863, when a service ran from Paddington to Farringdon. The first trains ran on steam, and it would be another tewnty-seven years before the world's first electric train ran on the City and South London Railway, which now forms paret of the Northern line. Today there are more than 3 million people who use the London Underground every week day.