ConQwest
ConQwest is a Big Urban Game of the same ilk as PacManhattan. Basically a treasure hunt, high schoolers find Semacodes (an evolved form of the bar code), photograph them with their camera phones, and send them in to HQ for points. The winning school gets a $5000 check from Qwest.
If you're in Salt Lake City tomorrow or Phoenix on 7 November, check it out!