Game operating device

A game operating device (controller) (10) includes a longitudinal housing (12), and a holding portion (18) formed in the housing which is to be held in the palm of the hand. A direction switch (26) is provided on an upper surface at a position where it can be operated by thumb of the hand holding the holding portion (18), and a start switch (30) and a select switch (32) are provided backward thereof. An X button (44) and a Y button (46) are further arranged in line on the upper surface of the housing. An imaging information arithmetic unit (54) is provided at a front end of the housing in a longitudinal direction in such a manner that an imaging device (56) thereof is exposed from a front-end surface. A concave portion (34) is formed on a lower surface at a position corresponding to the direction switch (26). The concave portion (34) includes a valley (36) and two inclined surfaces (38, 40). An A button (42) capable of being operated by index finger of the hand holding the holding portion (18) is provided on the backward inclined surface. By processing an image signal obtained by imaging an infrared ray from LED modules by the imaging device (56), it is possible to obtain an operation signal varying according to a position and/or attitude of the controller.