VIRTUAL TENNIS DEVICE

PROBLEM TO BE SOLVED: To achieve a dynamic game as if two players might play a tennis while hitting a virtual ball with their motion. SOLUTION: A device 1 includes a first information output means 16 for outputting information on the process of a game with sounds and a second information output means 17 for transmission with data, an information input means 18 for receiving information transmitted by another device, a detecting means 31 for detecting that the device is in swinging operation, a storage means for storing data required for the process of the game, and a control means 15 for judging the result of the swinging operation of the device in accordance with information received by the information input means 18 and a detection signal from the detecting means 31. The control means 15 transmits renewed data to another device each time data in the storage means is renewed and puts data in the storage means for two devices in common.