Abstract: A water submergence toy is not performed using a screw. It is done by only changing the buoyancy by means of changing the volume. Because of this, the control and surfacing responsiveness becomes very poor. The water submergence toy according to the present invention compresses the air inside a piston when the piston is pushed towards the inside of a cylinder to reduce the volume. This makes the buoyancy smaller. Conversely, when the piston is moved in a direction away from the cylinder, the volume of the air inside the piston becomes larger and the buoyancy increases. In addition, because this type of buoyancy adjustment can be performed manually as well, those who play with a water submergence toy can adjust the buoyancy whenever it is necessary. Because of this, the buoyancy of the water submergence toy can always be maintained in a state adjusted for optimum buoyancy.

Abstract: A water submergence toy using screws requires two electric motors to move straight ahead and turn. Because of this, it is difficult to reduce the size of the water submergence toy. Further, when moving straight ahead, the two electric motors must operate at the same time thereby increasing the amount of battery power consumed resulting in shorter operating times the toy can be continuously used. The water submergence toy related to the present invention drives a pump using one electric motor and uses a directional control valve to change the direction liquid expelled from this pump is directed. As an example, if the liquid is discharged towards the rear, the water submergence toy can move forward and if the liquid is discharged from the lateral part of the rear, the water submergence toy can turn.

Abstract: A controller for use with an operated object such as a model vehicle contains therein a memory. The movement of the model vehicle is stored in advance into the memory with each of push buttons in a keyboard unit of the controller. Once a “GO” button is pushed even during a manual operation, a signal to cause to perform the procedure stored in the memory is transmitted from an antenna which is provided in the controller. In this arrangement, the model vehicle can be subject to complicated operations even by an unskilled operator.

Abstract: Each of a set of cards for a game has a resistance member printed thereon by applying resist ink thereto so that the character of each card can be specified by reading the resistance value of the resistance member. Further, when the parameter of the character is corrected based on the difference of the resistance value, the game can be provided with a contingent factor. With this arrangement, the character of the card can be read at less expensive cost as compared with a case in which it is read through a barcode displayed on a card because an expensive card reader having a complex structure is necessary to read the barcode.

Abstract: A controller for use with an operated object such as a model vehicle contains therein a memory. The movement of the model vehicle is stored in advance into the memory with each of push buttons in a keyboard unit of the controller. Once a “GO” button is pushed even during a manual operation, a signal to cause to perform the procedure stored in the memory is transmitted from an antenna which is provided in the controller. In this arrangement, the model vehicle can be subject to complicated operations even by an unskilled operator.