What happens when you play Monopoly in the real world? You get Foursquareopoly:
Originally student work, Foursquareopoly mashes up the classic board game with the location-based mobile service. After this "app" is downloaded, the user connects through Foursquare and is given $100K in "Monopoly money." When they check in to an establishment that hasn't been "purchased" yet, a player can "buy" the property. Provided they have enough Foursquareopoly currency. From then on, when other Foursquareopoly players check into that building, they pay the owner "rent." The "owner" of the building must pay the bills -- otherwise they lose their property.