Abstract: A one-dimensional memory storage device, such as a video disc, is utilized to store graphic image symbols for video game displays. The storage device is organized so that the graphic symbols may be retrieved rapidly enough to give the visual impression that the entire display, including background or scene depiction, is changing in response to the player-manipulated controls. The memory organization scheme utilized establishes a plurality of jump sequences. The particular sequence being utilized to withdraw graphic symbol information from memory is determined by the physical movement of a player-operated control device, i.e., a joystick. Certain frequently used scenes, such as explosions, or bullet or rocket trajectories, for example, are generated separately by a fixed image producer.

Abstract: The ball kicking device in a pinball game machine, having a frame detachably mounted on the lower face of a play surface, an electromagnetic coil secured to the frame, an armature disc held on the coil, a bumper head, a pair of upwardly extending poles integrally connecting the disc with the bumper head, and a switch to detect the tilting of the bumper head when a ball abuts thereagainst, thus to energize the coil.

Abstract: An apparatus for simulating recoils in an imitation gun which apparatus has, as its characteristic feature, a frame, an imitation gun that is mounted on the frame in a freely movable manner, a motor that is started in response to a shot by said imitation gun, and an eccentric interposed between the imitation gun and the motor so that the imitation gun will be reciprocated by rotation of the motor.

Abstract: A racing game device simulating horse racing, auto racing, etc. has guide members, a travelling base frame which can travel along a predetermined locus established by the guide members, a plurality of movable models disposed on the travelling base frame in such manner that they may be reciprocated freely and individually along the locus, and drive mechanisms for individually driving the respective movable models.