The sidewalks of New York once were famous for games like stickball and Ringolevio. Now they've moved into the digital age. This weekend, as part of the Conflux Festival, a six-square-block area of Brooklyn, New York has been turned into a virtual game board for a game of Urban Reversi.

Teams of players are competing in games of Othello, capturing intersections by improvising performance-art pieces based on randomly assigned words and then uploading camera phone images of the pieces over a wireless net to a centralized server. Members of the public can watch the game on the city streets and track its progress online.