To provide a game device which can perform a three-dimensional display even by a small-sized device.

This game device is equipped with a display device, an optical member, a touch panel, and a game processing means. In the game device, the display device displays a game image. The optical member has a structure which consists of a bundle of fiber-like transparent members, the shape of one surface of the input/output surfaces which are formed on both ends of the transparent member is a flat surface, and at the same time, the shape of the other surface is an approximately spherical curved surface, and the optical member is arranged in such a manner that the flat surface may come into contact with the display surface of the display device. The touch panel covers the curved surface section of the optical member. The game processing means performs a game processing for changing the game image in response to inputs to the touch panel.