World of Subways 3: London Underground Simulator is a simulation of the historic London Underground Circle Line, originally opening in 1863 from Paddington to Farringdon. The line shown in the game represents how it looked in late 2010, early 2011, with the extension to Hammersmith and the closure of Blackfriars station for refurbishment.
Players get to drive the C stock underground train along the entire Circle Line, with the choice of choosing any shift from 5 am to just after midnight, or a selection from the Missions menu of more unusual shifts; for instance driving at reduced speed during track maintenance, taking over a late train from a colleague etc.).
You also have the ability to pick weather conditions and can explore any of the 35 stations represented in the game.