Alternate Reality Game

Interactive Narrative that uses the Real World as a Platform, often involving multiple media and game elements, to tell a story that may be affected by participants' ideas or actions. http://en.wikipedia.org/wiki/Alternate_Reality_Game

aka ARG

related: Location Based Game, MMORPG

To the extent that there's no logical conflict with the Real World, is this just a subjective spin? Is this really a Real World Game?