DDC Camp! (Double Disc Court)
DDC is played by two teams of two players each. The courts are 13 meters square and 17 meters apart. You get one point for a throw that lands and stays in the opponents' court. Your opponents get one point if your throw touches outside their court. If you can arrange it so that the other team is touching both discs at the same time, you get two points. That is called "doubling" your opponents.
For more detailed information:
http://www.pellucid.com/conrad/ddc/
