Tokyo Metro's Underground Mysteries - UPDATE : Now Until January 31st!
Here's a new and fun way to explore Tokyo ! From November 9th, 2015 until January 31st, 2016, you will have the opportunity to play a puzzle-solving game while walking in the streets of Tokyo !
Using the Underground Mysteries game kit, you will need to solve puzzles in order to find your next destination, while looking around Tokyo for hints. Once you solve all the puzzles, you will get the final answer and clear the game !
The game kit is on sale for 2160 yens, and it includes a Tokyo Metro one-day open ticket. You can get it at the Tokyo Metro pass office in Ueno station. English and Traditional Chinese versions are also available !
For all details and more information, please check this link.