Location-based Game
http://apps.mobilemmogames.com/t/mobile-mmo-games/location-based
http://www.wired.com/gadgets/wireless/news/2002/02/50205
http://en.wikipedia.org/wiki/Location-based_game
http://www.guardian.co.uk/technology/2002/aug/15/electronicgoods.games
http://asia.gamespot.com/news/mobile-games-are-alive-2688599
http://en.wikipedia.org/wiki/BotFighters