[Problems to be Solved] In a game where a user's operation is input to an object such as a player or a ball in a golf game or the like by using a controller with a built-in acceleration sensor to proceed the game, it is possible to input such a value at timing as the user intends without losing a realistic operation.[Means for Solving the Problems] A game device, where an operation signal to operate a character displayed on a screen is input to proceed a game, is provided with a controller 1c that has an acceleration sensor to detect acceleration in a predetermined direction, a GUI control unit 24 that controls a graphic user interface 344 for the display and operation of the game, and an object control unit 252 that makes the coordinate position of a ball change in accordance with input data calculated on the basis of the operation signal input from the controller 1c.