Patent ID: 8353748

Claim:
A game device, comprising: first display control means for causing a game screen showing a state of a first region within a virtual three-dimensional game space to be displayed; screen coordinate value acquisition means for acquiring a screen coordinate value according to a user's operation; first judgment means for judging whether or not the screen coordinate value acquired by the screen coordinate value acquisition means is a screen coordinate value within the game screen; position-in-first-region acquisition means for acquiring, if it is judged that the screen coordinate value acquired by the screen coordinate value acquisition means is a screen coordinate value within the game screen, a position within the first region corresponding to the screen coordinate value acquired by the screen coordinate value acquisition means; second display control means for causing, if it is judged that the screen coordinate value acquired by the screen coordinate value acquisition means is not a screen coordinate value within the game screen, an image showing a state of a second region within the virtual three-dimensional game space to be displayed on a part of the game screen based on a positional relationship between the screen coordinate value acquired by the screen coordinate value acquisition means and the game screen for at least a predetermined time; second judgment means for judging, if the image showing the state of the second region is displayed, whether or not the screen coordinate value acquired by the screen coordinate value acquisition means is a screen coordinate value within a region in which the image showing the state of the second region is displayed; position-in-second-region acquisition means for acquiring, if it is judged that the screen coordinate value acquired by the screen coordinate value acquisition means is a screen coordinate value within the region in which the image showing the state of the second region is displayed, a position within the second region corresponding to the screen coordinate value acquired by the screen coordinate value acquisition means in place of the position-in-first-region acquisition means; and game advancing means for advancing a game based on the position acquired by the position-in-first-region acquisition means or the position-in-second-region acquisition means.