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Metro Memory is a brand that challenges your knowledge of your city's metro system. Test your memory and see how well you know the stations of your city's transit system. The goal is simple: type as many stations as you can remember and watch them pop up on the map.

There's no time limit, allowing you to take your time and really put your memory to the test. Currently, Metro Memory features the metro systems of Paris, London, and Berlin (S- & U-Bahn coming soon). If you want the game to be available in your city, you can send a message on Twitter to @_benjamintd.

Inspired by a game created for San Francisco by Chris Arvin, Metro Memory has received rave reviews from players. Some have described the challenge as addictive and mind-boggling, while others have found it helpful and educational. Give your memory a workout with Metro Memory and see how well you know your city's metro system