Worldwide Rail Network Map
The Tokyo area is missing so many lines!!! .... or maybe there's just hard to see because for some reason they're in super non-contrasty colors.My guess is, whoever made this, based it on the idea that trains and subways are different things. They aren't in Japan. For example the Mirai-Line (subway), The Tokyu Tokoyo-Line (train), Eiden-Fukutoshin-line (subway), Tobu Tojo Line (train) can all share the same cars and some "cars" run all 4 lines where other cars run just their own line.I'm not sure what the definition of "subway" vs "train" is. In Japan it's certainly not "runs underground vs runs above ground". Even in NYC all the trains run for a long ways underground to get to Central or Penn station.It's also certainly not "need a harder to get ticket than just use a transit pass" as pretty all the trains lines in Japan except for a few super express trains can be ridden just by starting with the cheapest ticket you got out of a generic ticket machine and paying the difference when you get off". So for example you can ride the San-Yo line 333 miles (537km) and it's just a normal hop on, hop off train. you don't have to go to some ticket booth/kiosk and reserve a seat like you would for say an ICE train in Europe or the bullet train in Japan