The mapping scene has seen plenty of activity lately -- what with Apple ditching Google to launch its own service while the latter continues to layer on improvements such as better walking directions and more Street View coverage for its maps. Now a new app called "Recce" is trying to elbow its way into the conversation by using a free, searchable 3D mapping system that not only serves up location-based services but also location-based games. Named after military slang for "reconnaissance," Recce is the brainchild of former Psygnosis co-founder Ian Hetherington and Google engineering director Rian Liebenberg, who formed London-based developer eeGeo. The app works by pulling together a slew of data feeds from sources such as map providers and social networking services to provide an interactive 3D view of an area. It can also be used to update services like Twitter so your followers can know exactly where you were when you saw Justin Johnson, er, Bieber speeding away from the paparazzi in his chrome Fisker Karma. Do note that data is limited to central London at the moment, though San Francisco and New York are slated to get their 3D closeup next.