Abstract: A gaming machine which allows, according to a preset probability of occurrence, a player to play a special game (e.g., big bonus game) more advantageous than a normal game comprises a setting switch 46 for setting the probability of occurrence of big bonus games at a plurality of stages, and an indicator for informing the player of thus set value. The indicator comprises reel lamps 44 adapted to emit light in a plurality of light-emitting patterns while illuminating from inside reels in a transmitting manner the symbols seen through display windows. As the light-emitting patterns in the reel lamps 44 are changed (so as to represent L or H) according to the set value set by the setting switch 46, the player is informed of the setting value set by the setting switch 46. Consequently, the player can fully enjoy games, while the profits of players and game parlors are balanced.

Abstract: A game machine comprises a housing, a lever pivotally supported on the housing and a control unit. The lever comprises a rod portion having a handle portion integrally formed at the front section and a sensor actuating portion integrally formed at the rear section. The game machine comprises a resiliently urging member for resiliently urging the rod portion toward a neutral position from first and second positions. The game machine further comprises first and second optical sensors positioned to have the lights intercepted by the sensor actuating portion of the lever when the rod portion of the lever is moved to the first and second positions, respectively. The control unit is operable to selectively perform predetermined first and second operations in accordance with signals outputted from the first and second optical sensors, respectively.

Abstract: A conventional game machine informs a player that a big hit prize is caused by inner lottery, however, it does not inform the player that a small hit prize is caused. Prize determination (probability lottery processing) is carried out by determining to which prize group in a prize determining table a random number value generated by a random number generator 36 and specified by a sampling circuit 37 pertain (step 103). When a hit flag of a small hit prize is erected as a result of the inner lottery (step 104), a process of emitting small hit informing sound is carried out (step 105). According to the informing sound emitting processing, a speaker drive circuit 43 is controlled by CPU 31 and the speaker 39 emits informing sound A, B, C and D in accordance with the kind of the hit flag of the small hit prize.

Abstract: A game machine comprises a plurality of cylindrical reels each provided with various kinds of symbols on its outer surface. The reels are axially aligned and independently rotatable about an axis in first and second directions. Part of symbols of the respective reels are displayed on a window having a predetermined winning line crossing over the symbol of the respective reels to define the symbols on the winning line as a symbol combination. The reels start rotating in the first direction in response to an operation of a start lever. The reels independently stop rotating in response to respective operations of stop buttons to bring the symbol of the corresponding reel to a standstill on the winning line to obtain the symbol combination after all reels are stopped rotating. The symbols are shifted in the first and second directions within a predetermined waiting time to change the symbol combination.

Abstract: Light-emitting means for emitting a light beam for sterilizing a gaming medium is disposed in a gaming machine itself at a position where the light beam irradiates a stored gaming medium or a passing gaming medium, the light-emitting means being shielded from eyes of a player. In particular, the gaming machine is a ball-shooting gaming machine or a coin or medal gaming machine. Specifically, the light-emitting means is disposed at a position where the light beam irradiates a gaming medium flowing into storage means within the gaming machine or a gaming medium stored in the storage means. Specifically, the light-emitting means is disposed at a position where the light beam irradiates a gaming medium stored in a tray located outside the gaming machine. Preferably, the light beam is an ultraviolet ray. As a consequence, the antibacterial specification of the gaming machine becomes more effective, and an antibacterial specification is newly realized in the case of the coin or medal gaming machine.

Abstract: In a gaming machine displaying a plurality of rows of symbols in moving and stopped states, when the mode of symbols displayed in a stopped state is determined to be a big winning pattern, then the LEDs of credit meter 126, bet meter 120, and last bet meter 122 are turned off (S2 to S6). The timings at which these meters 120 to 126 are turned off are set such that they appear to turn off at substantially the same time to the player's eyes. Further, all of the reel section illuminating lamps 130A to 130I, disposed within the space on the inner peripheral side of reels 12A, 12B, and 12C are temporarily turned off (S7). As all of the LEDs of meters 120 to 126 and the reel section illuminating lamps 130A to 130I are turned off, the player is startled for an instant, so that the expectation for the game increases thereafter, whereby amusement can be enhanced.

Abstract: A game machine informs the player about the prize mode using combinations of the individual stagings by the sound emitting means, the connective staging means and the stop staging means. When rotations of individual reels 3 to 5 are started by operating a start lever 15, a game starting sound 1 or 2 according to a hit flag is generated by sound emitting means. In connection with the stopping of the individual reels 3 to 5 according to the individual operations of individual stop buttons 16 to 18, individual back lamps 57a to 57c are then sequentially staged by connective staging means in the connective display mode according to the hit flag. When all the individual reels 3 to 5 are stopped, the individual back lamps 57a to 57c are then staged by stop staging means in accordance with the hit flag.

Abstract: A game machine capable of providing proper expected values. The game machine is provided with a prize decision table to be applied to a game in an ordinary probability game state and a prize decision table to be applied to a game in a high probability game state. The former and latter prize decision tables are stored with at least data of numbers of lottery random numbers for providing basis of the individual lottery probabilities for individual prize modes. By increasing the number of lottery random numbers for a predetermined mode in the high probability game state but by decreasing the number of lottery random numbers for another mode, the prize probability of the predetermined mode is enhanced, and an expected value to be obtained in the high probability game state is set to a proper expected value or less.

Abstract: In a game machine, when a result of hit determination is a hit of double odds, a motor drive circuit 36 is controlled, any one of stepping motor 37 through 39 of reels 3 through 5 including a symbol “wild” is driven to rotate and any one of the reels 3 through 5 including the symbol “wild” is rotated by one rotation (step 109). Next, a hopper 49 is driven by a hopper drive circuit 48 and coins having a number of sheets of a normal hit in accordance with an allotment display table are paid to a coin tray 20 (step 110). Next, any one of the reels 3 through 5 including the symbol “wild” is again rotated by one rotation (step 111). Thereafter, coins of the normal hit in accordance with the allotment display table are again paid (step 112).

Abstract: A gaming machine is provided with a principal variable display for displaying principal graphical information corresponding to at least one of a plurality of principal graphical elements, each such principal graphical element having a predetermined significance in a principal game of the gaming machine. A secondary display displays secondary graphical information that constitutes any combination of secondary information predictive of the results that will be obtained in the play of the principal game, a secondary game, and/or timing information. A principal controller produces first control signals that control the principal variable display to display the principal graphical information as a sequential principal progression of the principal graphical elements, and second control signals that control the secondary display to display the secondary graphical information. The secondary graphical information has a predetermined relationship to the sequential progression of the principal graphical elements.

Abstract: To set a bet number according to an intention of a player, there is provided one bet switch 12 for a player to designate a desired bet number N. A game machine is provided in its body with a control unit 23 for setting the bet number N designated by the player by detecting whether or not the bet switch 12 has been operated. This control unit 23 sets the bet number N to a maximum allowable bet number “Kmax” when the bet switch 12 is operated one time prior to the start of each game. After this, each time the bet switch 12 is operated, the maximum allowable bet number “Kmax” is subtracted by 1, and this difference is set as the bet number N. Each time the operation number of the bet switch 12 reaches a predetermined value, the maximum allowable bet number is again set to “Kmax”. By repeating the subtraction of the bet number N by 1 each time the bet switch 12 is operated, moreover, the bet number N is set within a range of the maximum allowable bet number “Kmax”.

Abstract: A game machine is disclosed in which interest in the game is created by the operation of stop buttons 16 through 18, and back lamps 57a, 57b and 57c for illuminating rotating reels 3 through 5. Patterns which differ in accordance with the kind of prize modes are announced to the player, for example, by simultaneously extinguishing the respective back lamps 57a, 57b and 57c of the rotating reels 3 through 5 when the stop buttons 16 through 18 are actuated, and the possibility of erecting a “BB” hit flag, signifying a big hit prize, is announced to the player.

Abstract: In order to provide a more interesting game machine without hindering the concentration of a player in a game, the invention relates to a game machine in which the prize patterns are decided by combinations of symbols. A regular status associated with the likelihood that an appointed prize pattern may occur is indicated by a first set of one or more combinations of symbols. A status change is being indicated by one or more combinations of symbols that are different from those one or more combinations of symbols included in the first set associated with the regular status.

Abstract: A display for game is provided with a judgment foraging whether or not a specified game state is obtained in response to a predetermined input signal, a special pattern determination for determining a special pattern that represents the specified game state, a demonstration determination for determining a demonstration by selecting from a plurality of demonstrations that indicate display modes different from usual stop motion of the special pattern, a predictive image determination for determining a predictive image by selecting from a Plurality of predictive images representing expectation degrees for appearance of the specified game state, a display for displaying the special pattern, the demonstration and the predictive image determined by the special pattern determination, the demonstration determination and the predictive image determination, respectively; and a display controller for controlling the display to indicate the predictive image determined by the predictive image determination, then to indica

Abstract: In conventional types of slot machines, the prize status is determined by random selection using random numbers for each game. In this type of conventional slot machine, for example, the current game prize status is determined by the random selection of the prize status when a token is put into the slot machine to operate the start lever. When the current game prize status is determined, the reels are rotated to begin the game. In the type of slot machine in which the prize status is determined by random selection using random numbers in the present invention, a demonstration is made by unusual lights or sounds or by unusual operations when the randomly selected prize status is a “big jackpot” or when a “big jackpot” is missed by one reel symbol among all the reels (this condition of two matching symbols is referred to as “one-shy”).

Abstract: Provided is a slot machine which determines a prize situation depending on a combination of symbols to be displayed on effective lines. The position of the effective lines is variable and is determined by sampling a random number.

Abstract: A gaming machine has a symbol display arrangement that displays a variation action of a variable plurality of symbols that are necessary for playing a game. A predictive display arrangement performs a predictive display that informs the player of the likelihood of the appearance of a specific symbol display state when the variation action is stopped. A determination whether or not the symbol variation action is to be stopped with the appearance thereon of the specific symbol display state is made by a controller that also determines which predictive display mode from among a plurality of predetermined predictive display modes is to be displayed. In one embodiment, the controller controls the predictive display arrangement so that the probability of the appearance of a specific symbol display state is changeable in conjunction with the change in the game with the passage of time.

Abstract: A gaming machine has a symbol display arrangement that displays a variation action of a variable plurality of symbols that are necessary for playing a game. A predictive display arrangement performs a predictive display that informs the player of the likelihood of the appearance of a specific symbol display state when the variation action is stopped. A determination whether or not the symbol variation action is to be stopped with the appearance thereon of the specific symbol display state is made by a controller that also determines which predictive display mode from among a plurality of predetermined predictive display modes is to be displayed. In one embodiment, the controller controls the predictive display arrangement so that the probability of the appearance of a specific symbol display state is changeable in conjunction with the change in the game with the passage of time.

Abstract: A hit expectation sound is emitted from a speaker in accordance with the kind of prize line on which a predetermined, prizewinning combination of symbols is expected to be arranged. The emitted hit expectation sound is transmitted to a player via sound transmitting holes provided in a lower portion of the machine. Based on the hit expectation sound being heard, the player can recognize on which of a plurality of prize lines the predetermined combination of symbols is expected to be arranged. The player can enjoy his favorite hit expectation sound by causing part of the predetermined combination of symbols to be stopped on the prize line that is associated with his favorite hit expectation sound.

Abstract: A switch structure that is particularly suited for gaming equipment is tolerant of the spillage of food or of contamination resulting from beverage, or continued operation thereof by individuals with soiled hands. The switch structure has an actuatable member having an manipulable portion and a tube extending from the manipulable portion in the direction to be pushed. A protuberance is installed in a core of the tube and arranged to guide the motion of the actuatable member in response to the application of a pushing force to the manipulable portion thereof. A switch is provided for producing a variation in an electrical condition in response to the actuatable member being pushed. A support element has a recess for accommodating therein the actuatable member, there remaining a space surrounding the periphery of the actuatable member sufficient to accommodate contaminants.