Not perfect but a big help

You have to know the Tokyo public transport is really complicated, with subway, mono rail, trains... Keep that in mind when you use it. For example the map will not tell you in certain time period some trains are express and wont stop at every stop. Sometime when it tells you that you have to walk to another train/subway station, it can be a kilometre away. But without a map like this, you might as well stay in your hotel.

barnaby416 about Tokyo Rail Map+ Yokohama, Saitama, Chiba, v5.2.1