To provide a game device capable of allowing a user, when selecting any selected image candidate, to experience a real feeling of the relationship with another selected image candidate. A determination unit (70a) determines whether or not the designated area designated by a user is included in the determination area for a selected image candidate. When the designated area is included in the determination area, the designation unit (72a) designates the selected image candidate corresponding to the determination area as a selected image. A determination area control unit (68) changes the size of a determination area for another selection candidate image, based on a parameter stored so as to be correlated to a combination of the selected image candidate designated as a selected image and the other selected image candidate. A designated area control unit (82) changes the size of the designated area, based on a parameter stored so as to be correlated to a combination of the selected image candidate designated as the selected image and a selected image candidate located closest to the designated area.