Originally Posted by
ksandness
Right, the subway card works on ONE of the two subway lines
I agree that the passes are rarely worthwhile, but there are subway passes that cover all the Toei Subway and Tokyo Metro lines.
http://us.jnto.go.jp/partners/featur...resid=744&news
The advice about the passes on Japan Guide is pretty good
http://www.japan-guide.com/e/e2017.html#ticket