Mobile story game, which maps an imaginary world. Riverains creates a story trail along London's Old Street and Shoreditch High Street, accessible through user's mobile phones. It maps both the imaginary underground world of the Riverains and London's history onto the urban landscape. Through text messaging, Augmented Reality, GPS location sensing and QR barcode code reading, participants can use their mobile phone to discover this hidden underground world, which will correspond to real locations in Shoreditch. Participants can hear the Riverains voices at 16 sites and fully experience these video narratives.