An excellent add-on for MS Train Simulator. The graphics are impressive realistic. The tunnel landscapes I to October every two weeks performed once live on one, by the BVG of April in the night from Friday to Saturday night in an open subway car, was able to experience a voyage of discovery through Berlin's underground tunnels, are faithfully reproduced. Even the - in reality actually existing in the tunnel areas before and after the stations as well as the emergency exits - graffiti graffiti exist. The outside world on the track of the U2 is also realistic (partly seen moving cars, buses and trams). Even the building container construction site of the new DB-route to the train station Potsdamer Platz, which crosses the unearthly underground route U2 between the stations Gleisdreieck and Bülowstraße are represented. The real mode deserves just the title of "Exemplary" A perfect PC simulation! Recommended!