Sociolotron provides a realistic underground system under the city of London. This system allows you to either reach different parts of the city fast by means of trains or even walk the underground tunnels and walk to the desired station, however there are hostile NPCs in the tunnels so it's safer to take the trains.
The underground system is quite simple,when you use a map of the real London Underground you will find a lot of similarities. In order to move from one station to the other you need to click on the appropriate arrow to reach the next station. Some stations need to be reached by travelling through other stations.
In order to use the underground, you enter the system through one of the entries you find on the London Map
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