'So began a test run for a game of Pac-Manhattan, a real-world version of the 1980's video game played on the streets of New York and the latest example of a so-called "big game": a contest that uses wireless devices like cellphones and global positioning beacons to track players as they move through the urban grid, turning cities into vast game boards.'

http://www.nytimes.com/2004/05/09/fashion/09GAME.html