Patent ID: 7618322

Claim:
A game system for displaying a game image including a player object operable by a player on a display apparatus, comprising: a controller device having an operation surface that produces an audible percussive sound when subjected to a physical impact, said controller also generating an operation data input signal in response to an elastic deformation of said surface by a physical impact; operation data detector programmed logic circuitry configured to detect one or more operation data input signals generated by said controller device in response to a beating of said operation surface of said controller device by said player; an audible sound detector that detects one or more audible percussive sounds produced by said beating upon the operation surface of the controller or by other audible percutient player actions; volume value determining programmed logic circuitry configured to determine a volume level value for an audible percussive sound detected by said sound detector; and game processing programmed logic circuitry configured to change a game process in response to an operation data input signal when both an operation data input signal and an audible percussive sound are detected as occurring together within a predetermined time period.