Watch Dogs – developed by game publisher Ubisoft, is the 3D map which shows publicly available and real-time data about Paris, London and Berlin. You can discover huge amount of data in the game like map. Watch dogs map shows transportation, networks, infrastructure and social data and also shows relation between objects, for example: traffic lights connection.
I think that such a map must have each metropolitan administration. Looking at the map you can feel the pulse of the city, analyzing the environment to make quick and effective solution, for example: where to concentrate police, where to expand mobile network. Watch dogs map is a very good example of the benefits that can give open data and of course maps.