tokyocheapo.com/travel/tokyo-metro-tourist-pass/
“Tokyo Metro has partnered with Linktivity, an e-ticketing platform provider, to launch the Tokyo City Pass, a new tourist pass that combines unlimited subway rides with discounted entry to Tokyo sightseeing spots. It joins an extensive line-up of existing Tokyo transport passes, but stands out in value for money, with potential savings of 60%-80%, as reported by the provider.’