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Hide and Seek on Google Map ...
localiz.me is a game based on google maps. Like a "treasure hunt" users must search around the world for objects hidden by other users. A system of difficulty working with the zoom level let users play on different ladders (country, city, street ...) and adapt it according to the difficulty of the given clue. The game offers opportunity to share his research or findings (twitter, facebook).
Read more: http://localiz.me/