New mobile game "Pokemon Go" has become an overnight sensation with U.S. fans but also played a role in armed robberies in Missouri, the discovery of a body in Wyoming and minor injuries to fans distracted by the app, officials and news media reported on Monday.

The "augmented reality" game based on the 1990s Japanese franchise surged to the top of Apple Inc.'s app charts over the weekend. Gamers use their mobile devices to find and capture virtual Pokemon characters such as cuddly yellow Pikachu at various real-life locations.

Five days after its release, the game now is on more Android phones than dating app Tinder, and its rate of daily active users was neck and neck with social network Twitter, according to analytics firm SimilarWeb.