For those of you that don't know what Densha De Go! is it's a Japanese train simulation game. The point being you drive a train. It was hugely popular here in Japan. That's probably because trains are such a huge part of Japanese life. Well, Microsoft Japan is now taking on the king with Microsoft Train Simulator.
I've never played any of them. I assume that the hard part is keeping to the schedule and attempting to stop the train correctly at the platform without missing the platform and without making all the passengers fall over. Certainly you don't have to steer the train.
There's even a train controller you can buy for it. There's a picture at the bottom of this page which is for Densha De Go! version 3 for the Playstation 2.
By the way, Densha = train, De = by, Go = Go. 😉