Abstract: A system and method for playing a golf game. A user is allotted with an ability value for the golf game, and a plurality of available golf clubs are provided according to the user's ability value. A request ability value referred to when requesting to use a corresponding golf club and an application ability value applied when the golf club is used are allotted to each of the golf clubs. Only when the user's ability value satisfies the request ability value allotted to a golf club can the user use the golf club. Ability points that can adjust the user's ability value are allotted to the user according to a result of the golf game, so that the user can select from a wide range of golf clubs having various characteristics. Accordingly, the user can adjust the ability value which influences the percentage of winning the golf game using the ability points allotted according to the result of the golf game, thereby enhancing the fun of the golf game.

Abstract: Aspects of the present invention provide a system, method and computer program product for simulating movement of a projectile in a virtual environment. Primary data comprising a plurality of sets of position values and a plurality of time values for a projectile is received, with each time value in the primary data being associated with one of the sets of position values. The primary data is processed to generate secondary data that represents at least two consecutive sets of positions. Each set of positions includes a start position and an end position for the projectile, and the secondary data further represents a velocity of the projectile associated with each start position. The secondary data is used to simulate movement of the projectile in the virtual environment.

Abstract: Provided is a system for customizing a weapon in the online first person shooter game provided by a provider in which a plurality of users participate through computer terminals of the users connected through Internet and the plurality of the users form teams to compete, the system including: a game content providing server for providing the online first person shooter game contents to the computer terminals through the Internet network; and a weapon customization server for generating a gun from among a plurality of guns in a computer terminal in order to perform a mission of the game, determining whether or not the gun is customizable according to a gun customization request from the computer terminal, and performing the gun customization by mounting custom parts selected by the computer terminal on the gun when the gun is customizable according to a result of the determination.

Abstract: The present invention is directed to an object tracking interface device for use with computers and game consoles. The object tracking interface device tracks the movement of a moving object within the field of view of the object tracking interface device and provides input to the computer or game console on the movement of the moving object. The object tracking interface device comprises one or more detection means which view a viewed space through which the moving object moves, a means for receiving the output of the detection means for determining the presence of a moving object, a means calculating one or more parameters of the movement of the moving object, and a means for converting the parameters of the movement of the moving object into a signal which can be input into the computer or gaming console.

Abstract: A sports simulator calculates spin of a sports object using image analysis. A velocity vector is also calculated. These are combined to produce a predicted future trajectory of the sports object. In one embodiment, the sports object is a golf ball and the sports simulator simulates golf.

Abstract: A control program for an action game according to the present invention in which one of a plurality of characters moving in a game space is selected to be an attack target, in response to an operation of a game player, comprises: a selectable candidate object judging step of judging each of said plurality of characters as to whether or not it is a selectable candidate object which is qualified to be an attack target and which is in position relationship which could be selected as an attack target, a selection order deciding step of deciding an order of selecting those of said plurality of selectable candidate objects, which have been judged by the selectable candidate object judging step; and an attack target changing step of selecting, based on the selection order decided by the selection order deciding step, one of said plurality of characters as an attack target and sequentially changing the attack target in response to an attack target changing operation by the game player.

Abstract: An input of an aiming point coordinate indicating a position of an aiming point is accepted from an input device, and it is determined whether or not the aiming point overlaps with an object based on the aiming point coordinate. When it is determined that the aiming point overlaps with the object, a target time for which the object overlapped by the aiming point becomes a target of shooting is set such that the target time is correlated with the object. Further, a shooting operation is accepted, and when the shooting operation is accepted within the target time after the target time is set for the object, shooting at the object for which the target time has been set is performed irrespective of the position of the aiming point, and the target time is reset for the object.

Abstract: An image processing device for realizing more realistic pictures of explosions in video game devices as well as other devices. Objects displaying such pictures of explosions are formed of spherical polygons (R1, R2, R3, . . . ) and planar polygons (S1, S2, S3, . . . ). Pictures of explosions are realized by alternately arranging these spherical polygons and planar polygons with the lapse in time. Preferably, pictures of polygons are realized by arranging the spherical polygons in layers on the boundary of the planar polygons.

Abstract: Provided is an input device for a billiard game comprising: a simulative ball provided as an object to be shot by a player; a link portion having a ball axis on which the simulative ball is mounted; a support portion for movably supporting the link portion; and a sensor for outputting a signal that corresponds to an operation of the link portion, wherein at least either one of rotational motion of the simulative ball around an axle of a ball axis and linear motion of the simulative ball in a predetermined range along an axial direction of the ball axis is permitted.

Abstract: A method of playing a game, including: adjusting a desired direction and desired force used to project a player; projecting the player through the air in the desired direction using the desired force, wherein the player interacts with objects within a game environment as the player passes by the objects.

Abstract: A gaming machine, system, and method including a game event in which a player aims at a target. In one embodiment, the game event includes a plurality of targets. The gaming device displays the plurality of targets to the player and enables the player to select one of the targets. The gaming device designates the player-selected target as the primary target for the game event. Based on the designated primary target, the gaming device identifies one or more of the other targets as secondary targets for the game event. The gaming device determines for each of the primary and secondary targets a probability that that target will be hit in the game event. The gaming device determines which of the targets is actually hit in the game event based on the probabilities associated with the targets.

Abstract: By providing a playing surface which is dimensioned for enabling a desired game to be played with all competitors positioned thereon, with the playing surface being rotated, a competitive game and/or playing system/environment is created which enables all individuals to compete equally and fairly regardless of their physical capabilities. In the preferred embodiment, the rotation of the playing surface is maintained at a constant rate of speed, although added dimensions and difficulties can be added to the game by altering the rotational speed of the playing surface during the competition. By providing a playing surface upon which any desired game can be played, particularly an action oriented game, with the playing surface being continuously rotated throughout the play of the game, forces previously unknown to each competitor are continuously imposed on each competitor, effectively rendering each competitor to possess equal capabilities, regardless of their strength, agility, proficiency, or size.

Abstract: A game system includes a game apparatus and a controller. The controller is furnished with an acceleration sensor for detecting accelerations in at least two axis directions. Game processing corresponding to the kind of an acceleration input by means of the controller is executed. For determining the kind, reference timing when acceleration in a first-axis direction is below a threshold value to take on a minimum value is detected. Then, it is determined whether or not an angle between acceleration change vectors before and after the reference timing is equal to or more than a predetermined angle. When the angle is not equal to or more than the predetermined angle, it is determined that the acceleration input is an acceleration input in any one of the two-axis directions, and when the angle is equal to or more than the predetermined angle, it is determined that the acceleration input is an acceleration input in a direction including the two-axis directions as components.

Abstract: A multilevel online tournament is provided. The first tournament round has a single bracket and each subsequent tournament round has a winners bracket and a losers bracket corresponding to a bracket in the previous tournament round. The tournament format allows players to match-up against any other player located within the same bracket. The online tournament format also allows participants to start playing match in a round of the tournament prior to the official start of that round. Thus, players are able to more quickly advance through the tournament and spend less time waiting for a suitable opponent. The tournament format also allows for players to request available tournament byes and to automatically progress when they are unable to connect with other players due to quality of service issues.

Abstract: Taught herein is a virtual toy fighting device integrating a positioning receiver comprising a host toy device 2, a host remote-control operation device 6 and a opponent toy device 22, wherein the host toy device 2 and the opponent toy device 22 comprise a positioning receiver 3 and a positioning receiver 33 for receiving positioning information, respectively. The invention is applicable for fighting a combat game between air-to-air, air-to-land, air-to-water, land-to-land, water-to-surface, and land-to-water models, in a single user, or multiple user environment (one-to-one, one-to-many and many-to-many), and thereby widens the entertainment range of the game. This invention has wide applications in the areas of toy tools, simulators, training models, and so on.

Abstract: In a video graphics game apparatus, a game operation controller device is used to select at least one of a plurality of items which are accessible by a player object to use as throwable items. A target object specifier is used to specify an object existing in a direction in which a throwable item is to be thrown. The effectiveness of the throwable item on the target object is determined based on stored item/object correspondence information defining which throwable item is effective on which object on an item-by-item basis. A game display controller provides an aiming point on the display indicating a direction in which the throwable item is to be thrown, the aiming point being displayed in a manner or mode that is varied depending upon a result of the correspondence determination.

Abstract: A game performing method for making a computer device execute a predetermined game by generating a first object and a second object as seen from a virtual camera, has: judging whether there is a hit between the first object and the second object; judging whether a predetermined event occurrence condition is satisfied if it is judged that there is the hit between the first object and the second object; generating a first image which is an internal structure object of the second object if it is judged that the predetermined event occurrence condition is satisfied; and generating a second image which is the internal structure object with a predetermined part thereof changed after the first image is generated.

Abstract: A large “hit range in offense” is applied to a player character 41 on an offense side, and a small “hit range in defense” is applied to player characters 42 and 43 on a defense side. When a ball is free, a “normal hit range” is applied to each player character. As mentioned above, the three hit ranges having different sizes are provided and the applied hit ranges are switched depending on situations. Thus, as compared with a case in which the size of the hit range is constant, pass of the ball is easily successful. Therefore, a beginner, who is strange to a video game machine, can easily pass the ball when the player character in an opponent team steals the ball, and organized offense can be easily performed.

Abstract: The present invention provides a picture processing device capable of realizing the detailed shape and pattern of a display object which is far away from a viewpoint and which attracts a game player's attention. For example, a display object (or player) in a soccer game is composed of a small number of polygons to be displayed on a CRT-type display, etc. when the display object is far away from the viewpoint (or camera position). However, even if the player is at a far position, the player will attract the game player's attention when a ball is passed to the player. If the number of polygons composing the player is small in such a situation, the game player will gain an unnatural impression. For example, assuming that a ball rolls to a certain player and this player obtains priority, a priority mark will be displayed above the player's head. Then, it is determined whether or not the player with the priority mark is close to a certain viewpoint.

Abstract: The present inventions provide a system and a method for facilitating various visual analyses of individual players and team data that is most appropriate for the purpose, while also allowing analyzed data and results to be saved. A time-series data processing device according to the present inventions includes an image-pick up unit for image-picking up a specific object, a data processing unit for generating a data list indicating, in time series, a temporal transition of a position and a state of the object image-picked up by the image-picking unit, with respect to a time, an animating unit for animating the transition of the position and the state of the object in accordance with the data list, and a display unit for displaying at least one of the data list generated by the data processing unit and the image animated by the animating unit.

Abstract: It is an object of the present invention to increase the game operability, and to increase the feeling of pressure and feeling of actual presence on the scene, by making it possible to display partial enlarged images of the scope displays or each of a plurality of players in a manner that allows mutual influence on the screen on which the game images are displayed.

Abstract: The present invention provides an amusement device having a body, wherein the body has features, at least one motor for powering the device and at least some of the features, and an information receiving structure for receiving information from an information carrying item that is separate or discrete from the amusement device.

Abstract: In providing a gun shooting game allowing selective use of one or more types of controller among multiple types of controller, the effect of difference between controllers on the game can be diminished. A gun shooting game device 10 allowing selective use of one or more types of controller among multiple types of controller includes a target display unit 100 for displaying a target, a controller type determination unit 102 for determining the type of a currently used controller, a hit determination unit 103 for determining whether or not a bullet has hit the target based on data supplied by the controller, and a range extent control unit 104 for controlling the extent of a range in which the bullet is determined as hitting the target among supplied data based on the controller type.

Abstract: The invention relates to simulation of effects in a combat environment, wherein personnel, vehicles and buildings are exposed to simulated fire from military weapons. Direct fire and indirect fire are simulated by means of at least one of light rays and radio waves. Effects of attacking fire are registered by means of a target object device, which includes sensors adapted to detect the light rays respective the radio waves and are co-located with the target object (140). According to the invention the target object is associated to at least one protecting object located between the simulated fire and the target object if such object exists in the current combat situation. This enables a consideration to various protecting object— influence on the simulated fire and the effects on corresponding actual fire.

Abstract: The present invention provides an amusement device having a body, wherein the body has features, at least one motor for powering the device and at least some of the features, and an information receiving structure for receiving information from an information carrying item that is separate or discrete from the amusement device.

Abstract: A game apparatus for causing a player's character controlled by a player to fight against an enemy character within a predetermined game space. The game apparatus includes a storage section for storing data of items held by the respective characters, an item computing section and a character reviving section for reviving a defeated character within the game space under a predetermined condition. The item computing section selects prize items from items held by the defeated character in accordance with a predetermined rule and displays the prize items on a display means. The item computing section adds the prize items to items held by a character who acquires said prize item, subtracts the prize items from items held by the defeated character in accordance with a predetermined rule, and updating the data of items in the storage section according to the results of addition and subtraction.

Abstract: On displaying, in a video game device, an image of a player character and images of non-player characters, together with one type of background image from at least two or more switchable types of background images, the background images are changed from one to another only while the player character disappears after completion of a particular operation mode.

Abstract: An image in which an enemy moving in the game space of a gun game is acquired from a movable camera viewpoint in the space is generated. A control means (steps S24 and S27–S31) which controls the movement of the camera viewpoint by using the positional relation between a viewed point determined in relation to the enemy and the line of sight of the present camera viewpoint for every image frame is provided. The means judges the specific moving state of the camera viewpoint, moves the camera viewpoint while the line of sight is fixed, calculates the angle between the direction from the camera viewpoint toward the viewed point and the direction of the line of sight of the camera viewpoint before it is moved, and turns the camera viewpoint to the viewed point in accordance with the calculated angle.

Abstract: A moving image for a game which is conducted at a specific location are distributed in real time, so as to implement a network participation type game which has an enhanced feeling of reality. By this game being distributed as a moving image in real time via a transmission line such as the Internet or a telephone line network, and by an unspecified number of people entering into conversation via terminal devices which receive this game, the game conducted at the specific location is executed, and thereby the feeling of reality is increased. Furthermore by including, in this game which is distributed as a moving image, reference time information which absorbs the time difference between the game which is conducted at the specific location and the game which is conducted upon the terminal device, players can participate in this game simultaneously in real time.

Abstract: There is provided a game system which can change the configuration of an image based on the detected illuminating position of a light illuminating device to improve the effect of a game. The game system includes a light detection section which detects a position of a spotlight on a screen formed by an infrared light emitting section, an area setting section which sets a given specified area based on the position of the spotlight detected by the position detection section, and an image effect section which displays an image so that the specified area is displayed in a manner different from that of an area other than the specified area.

Abstract: An amusement device has a body, wherein the body has features, at least one motor for powering the device and at least some of the features, and an information receiving structure for receiving information from an information carrying item that is separate or discrete from the amusement device.

Abstract: A shooting game is provided based on videos reproduced on a computer by using an augmented reality technology. A 3D graphic object is matched with an existing video by rendering the 3D graphic object and a segmentation object mask of the existing video is overlaid on the 3D graphic object. As a result, three-dimensional effect of the game environment is greatly increased. Further, interactions between the computer and a gamer can be processed by using a gun simulator such as a mouse, a key board, a joystick, and the like. Since the game is played based on the video containing actual elements, the reality of the game environment is greatly enhanced compared to conventional cases where only virtual elements created by using computer graphics are utilized. Therefore, it becomes possible to produce a game having more various interesting scenario with a more real-world-like game environment.

Abstract: Voice communication between players using one or more multiplayer game console is selectively controlled. A player may selectively block voice communications with another player during a current and any future games. In addition, an authorized party (e.g., a parent) can selectively preclude voice communication by a minor child by setting an option that is uploaded to an online game service service; the minor child is then precluded from voice communication on any voice console via the online game service. Also, a player may be temporarily or permanently banned from voice communication during games played through an online game service in response to complaints made by other players concerning the player's behavior in voice communication while playing games, e.g., excessive use of profanity. When a player signs on to the online game service, data are downloaded to the game console that indicate any applicable restraints on voice communication.

Abstract: The present invention provides a network game progress control system which is capable of causing a network game between users to progress smoothly without being subject to effects caused by a data transfer rate disparity and/or a difference in hardware capacity. The pitcher-side client computer 2a transmits ball-type information and course information to the batter-side client computer 2b, causes a pitching action of the pitcher character to be temporarily suspended, and, after receiving batting information transmitted from the batter-side client computer 2b, restarts the pitching action of the pitcher character, and causes a baseball game to progress in accordance with a batting action determined by the batting information.

Abstract: A 3D game machine includes a monitor for displaying images, a game control unit for controlling progress of a game, and an image control unit for generating and displaying a 3D image viewed from a viewing point of a simulated camera on a screen of the monitor. A transverse position and a height position of the head of a game player located in a play area before the screen of the monitor are detected using one ultrasonic transmitter and two ultrasonic receivers, and the viewing point of the simulated camera is so moved as to follow a displacing direction and a displacing amount of the detected position of the game player's head, thereby allowing the viewing point of the simulated camera to follow free movements of the game player so that images viewed from the viewing point intended by the game player are actively displayed.

Abstract: Equipment for detecting that a target has received a direct hit from a simulated weapon including a weapon (10, 30) and a target (11, 12, 38, 45), and characterized in that said weapon (10, 30) provides an emitter of signals or laser shots (14, 33) operated by a switch (16, 35) and a trigger (18, 36), and in that said target includes sensors (19, 20, 38a, 41-44) affixed to a supporting element (12, 11, 38, 45). Said sensors are operatively connected to an electronic detection circuit for a signal or laser shot received by the same sensors.

Abstract: Provides a game processing apparatus capable of getting players more excited about playing games. For that reason, the game processing apparatus of the present invention processes games on the basis of players' operating signals, and is equipped with processing circuits (10), which process the above-mentioned games on the basis of operating signals supplied from input devices (2b) operated by the players, and which generate the image data for these games. When an operating signal equivalent to a player's victory declaration is input from an input device (2b), the processing circuits (10) process subsequent operating signals input by the player as invalid signals until a prescribed condition is achieved.

Abstract: A turning point marker 241 on a power gauge 24 and an impact point object 25 are displayed in a game image. The impact point object 25 is displayed according to the current lie. The turning point marker 241 is positioned away from the left end of the power gauge 24 depending on the difficulty of the shot. The moving direction of a cursor 244 moving along the power gauge 24 is reversed at the turning point marker 241. With the turning point marker 241, it is possible to clearly indicate to the player how limited the power available is under the current situation as compared with the situation where the maximum power is available, and thus how difficult to play the current situation is.

Abstract: Systems and methods are provided to conduct a game associated with a physics simulation, the physics simulation being adapted to generate a game result based on a set of input parameters. According to one embodiment, a game condition associated with a game to be played by a player is established. For example, a three-dimensional terrain associated with a golf putting green may be established. It is then determined that at least one set of possible input parameters to the physics simulation will produce a successful game result given the established game condition. For example, it may be determined that a player can use his or her mouse to provide a set of inputs parameters to the physics simulation such that a simulated golf ball will reach a simulated golf hole based on the three-dimensional golf putting green terrain.

Abstract: The invention relates to an arrangement and to a method for providing a linear transmitter amplifier (11; 50) that remains linear even when the load varies significantly over the passage of time. A detector circuit (14; 48) on the output of the amplifier (11; 50) identifies which of the current or the voltage lies closest to its maximum value. This signal is then used as a real or actual value in a regulating system (17; 40) for linearising the amplifier.

Abstract: The following types of processing are provided in the present invention. 1) Projection processing in which a shadow projected onto the ground of a flying object flying through a virtual space is prevented from becoming too small. 2) Viewpoint moving processing in which a viewpoint is moved automatically so that a character to be displayed is accommodated within the field of vision of the viewpoint at all times. 3) Semi-transparentizing processing in which, when display objects overlap, the display object with the smaller surface area according to [a comparison of] the displayed surface area is made semi-transparent. 4) Relative strength judgment processing in which the relative strength of teams in a team competition is determined on the basis of the sum of the fighting abilities. 5) Leader setting processing in which a leader character is determined and the outcome of the game is judged according to whether or not the leader character is active.

Abstract: An induced explosion of a firework ball is represented using a small processing volume. A range for an induced explosion is set around a firework ball to be exploded drawn on a display image, for example, as indicated by the broken line in FIG. 10A in accordance with attributes of the firework ball. A drawing range of each firework ball under management, the range being indicated by its attributes, is referred to, and any other firework ball drawn in the range is set as a firework ball to be exploded. As a result, the firework ball located around the exploded firework ball is also exploded as shown in FIG. 10B.

Abstract: The invention provides a golf feedback system. A mat is used to determine player foot position, and a 3D golf tracking system tracks golf balls hit from the mat to determine (a) a ground ball track and (b) a player orientation axis, based on the foot position and relative to the mat. The system further determines information indicative of how well the ground ball track correlated to the orientation axis. Preferably, a golfer using the system is led through a plurality of pin target locations in a simulated golf game. The system evaluates and stores information such as slice and hook, accuracy, player orientation axis and ball carry distance such that the player can evaluate his/her game individually or against one or more other players.

Abstract: A method for playing an interactive computer processed golf tournament in real time via the Internet. The method includes the steps of registering users via the Internet and storing the user name, address, age, telephone, credit card data and club number on a library file. The method includes scheduling named tournaments, registering users via the Internet as contestants in one of the named tournaments including, assigning the user a position within a flight of a first round of the named tournament, and storing the assigned position on the library file. Participating contestant logins are accepted via the Internet prior to each named tournament. Participating contestants are provided with a scorecard display for the assigned flight including a tournament name, a countdown clock, one or more contestant scores, a cursor, and a message area.

Abstract: A simulated real-time environment employs a plurality of computer controlled video projectors and screens at least fore and aft of a participant-trainee to present life-size displays mutually coordinated to represent views of a same environment from a participant's perspective, each screen representing the participant's view looking in a different direction. In response to a participant's actions, the computer seamlessly changes a projected video to match the participant' actions and maintain a scenario consistent between the two screens. The participant uses a light-emitting simulated firearm or his own firearm loaded with a light-emitting cartridge and/or other equipment with which he is familiar, such as a modified or simulated flashlight, taser, chemical spray container or the like, tethered or untethered by a communication wire, to respond to a simulated situation, which response detected and interpreted by the computer to direct a branch in the projected videos and even shoot back a simulated bullet.

Abstract: By using a unique display control technique, game images are provided, in which characters can be displayed in different poses with a limited-capacity memory area. Both image data corresponding to each of a plurality of blocks obtained by dividing a character to be displayed in a game image and further image data for representing different pictures in connection with at least part of the blocks are prepared. And the display pose of the character displayed in the game image is changed by switching a combination of the prepared image data. By way of example, color of at least part of the character displayed in the game image is changed on the basis of the combination of the same image data, thereby representing a plurality of types of characters. The color within the block mapped uppermost in the game image among the blocks constituting the character is kept unchanged regardless of changing of the color with respect to the remaining blocks.

Abstract: A shooting game is provided based on videos reproduced on a computer by using an augmented reality technology. A 3D graphic object is matched with an existing video by rendering the 3D graphic object and a segmentation object mask of the existing video is overlaid on the 3D graphic object. As a result, three-dimensional effect of the game environment is greatly increased. Further, interactions between the computer and a gamer can be processed by using a gun simulator such as a mouse, a key board, a joystick, and the like. Since the game is played based on the video containing actual elements, the reality of the game environment is greatly enhanced compared to conventional cases where only virtual elements created by using computer graphics are utilized. Therefore, it becomes possible to produce a game having more various interesting scenario with a more real-world-like game environment.

Abstract: Erroneous input is prevented on the event of input of instructions by a game player, which instructions are likely to change according to the state of a game character's abilities, while providing the player with a firm grasp of the state of abilities of the character. In a competitive action game which mimics baseball, among the players operating two connected portable game devices, the player engaged in defense is prompted to select a pitch type for pitching from a pitcher character 450 to a batter character 460. Here pitching ability data is set such that the pitcher character 450 can pitch, as breaking pitches, a sinker, curveball, or slider, with a curve width of 3, 1 and 5, respectively; based on this pitching ability data, the icons 403, 404, 405 are displayed in the vicinity of the strike zone display 410.

Abstract: A video game device in which a game screen displayed on a monitor is controlled by operating an operation unit, the video game device comprises a character display control unit for displaying a player character in such a manner as to be rotatable together with a throwing object character and making such a display that the throwing object character is thrown in a specified direction by the player character when the operation unit is operated at a specified timing, and a guide display control unit for setting a guide display area in a partial area of the game screens, displaying a throwing mark in the guide display area which mark moves in response to a rotation of the throwing object character, and displaying an area mark specifying a throwing area of the throwing object character in association with the guide display area.

Abstract: In a game system such as a television game system, a television game machine main unit includes a protocol controller and each game operation device connected to the television game machine unit via a serial port also has a protocol controller. The television game machine main unit when connected to a game operation device which has a unique identifier, combines a communication protocol that transmits and receives data for each character with a communication protocol which transmits or receives data for two or more characters in a row and switches the communication protocol which corresponds to that game operation device based on the identifier thereof to minimize the amount of information required between the television game machine main unit and the game operation device.