Virtual Tennis is a 3D augmented reality game in which two phones connect via bluetooth before playing a game of tennis using a "court" printed from http://fanta.eu. To play, you and a friend each set your phone's browser to http:/m.fanta.eu, and download the free app. Run it. One player chooses "Start as server" and the other chooses "Connect to server." You can also choose "Practice mode." Use the phone's camera to look at the court you printed out-- and it turns into a tennis court and tennis ball! Play anywhere!