To improve the realism of operation on a display means of a simulation sports game by continuously operating an operation button during the display of offense and defense to change the display of offense and defense.

During the game such as a baseball game or the like, it is read from an image data recording part 52 by a display change scene recognizing part 51 whether the current displayed scene is a display change scene or not, and if yes, a continuous hit receipt guidance 43 is displayed on a part of a display 5, and a timer part 53 is operated. When a button press receiving part 54 receives a continuous press of button 8 of a controller 3, a continuous operation determining part 55 determines the presence of continuous operation when the frequency of pressing the button reaches a fixed frequency within a fixed time counted by the timer part 53. When the count time in a second timer part 57 is a fixed value or more, a random number of a random number generating part 59 is read to determine whether the display is changed or not, and if yes, a change scene image is displayed.