JP2002233618A - Pachinko game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a Pachinko game machine which enables a player to have satisfaction without getting tired of probability variation. SOLUTION: In this Pachinko game machine, jackpot probability M and a probability variation continuation number N in a probability variation mode are made variable by operating a switch 15 and the variation of the jackpot probability M by the switching is made appear on the probability variation continuation number N as variation in the reverse direction to make a mode in which the jackpot probability M is high but its profit is obtained not so often and, in a directly opposite position, a mode in which the jackpot probability M is not largely different from ordinary probability but the probability variation continuation number N is made larger to continue provability variation longer to provide a player with a wide range of pleasure of probability variation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ball game machine,
In particular, it relates to control in transition from a special game to a probability fluctuation state.

[0002]

2. Description of the Related Art A ball-and-ball game machine is a game machine that pays out game balls as prize balls when a game ball fired by a player's operation enters a winning opening provided on a game board. Machines are widespread. Pachinko gaming machines are provided with a firing handle below the game board, and when the player turns the handle by a predetermined angle, game balls are continuously fired on the game board surface.

[0003] In recent years, the content of games has changed from a simple game in which a predetermined number of game balls are paid out when the game balls enter a winning opening, to a game in which the game progresses more complicatedly. For example, an image display unit for displaying a plurality of (usually three) symbols is provided, and when a game ball enters a predetermined operating port, the symbol on the image display unit is changed so as to be stopped after a predetermined time. When the display symbols are complete, there are some that win this. And on this condition, it is possible to shift to a special game that is different from the previous game.In the special game, for example, a large winning opening with a wide opening and a large amount of prize balls can be opened, This is advantageous to the player in terms of ease.

[0004] By the way, a plurality of types of jackpots are usually prepared.
After the end of the special game, when the game returns to the normal game state, the probability of a big hit increases (probability change (also referred to as probability change as appropriate)), which is more advantageous for the player. Also,
The time required for the special symbol to start changing and to stand still is reduced (time reduction (also referred to as time reduction if appropriate)), and if there is a ball in the working port, the game will be able to hit and miss relatively early as a result. Become. Probability fluctuation and time reduction usually appear simultaneously.

[0005]

However, the length of the period during which the probability fluctuation continues is defined by the number of times that the determination as to whether or not a big hit has been made by entering the first-type starting port. For example, it is set to be extremely high, such as 10,000 times, or is set so that the probability fluctuation state continues until the next big hit occurs.

[0006] This instills a sense of security in the player as if he or she has secured a large number of prize balls one time later, and reduces the tension. In addition, if the expected jackpot is not easily generated, the player is frustrated and cannot enjoy the game sufficiently. Even if the probability fluctuates, it is not always a fulfilling time for the player. As described above, the game mode in which the state is shifted to the probability fluctuation state after the jackpot is advantageous for the player, but does not function sufficiently to enrich the interest of the game. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a ball-and-ball game machine capable of enriching the interest of a game by changing the probability.

[0008]

According to the first aspect of the present invention, a prize hole is provided on a game board surface for a game ball fired to enter, and when a game ball enters the prize hole, a prize ball is paid out.
A ball game machine that can shift to another type of special game depending on the progress of the game, and if a game ball enters a predetermined entrance that is set in advance, a jackpot that becomes a condition for transition to the special game A bullet that performs a jackpot determination process of randomly determining whether or not a hit has occurred with a predetermined jackpot probability, and randomly determines whether or not to shift to a probability variation state in which the jackpot probability is increased after the end of the special game, with a predetermined probability variation probability. In the ball game machine, it is provided with a probability variation mode switching means for switching the jackpot probability and the length of the probability variation duration in the probability variation period, and the jackpot probability and the length of the probability variation duration in the probability variation state, the predetermined Set based on correlation.

The larger the value of each of the jackpot probability and the length of the probability variation continuation period in the probability variation state, the larger the jackpot is likely to occur during the period in which the probability variation state continues, but the characteristics are different. In other words, while the jackpot probability in the probability fluctuation state affects the intensity of the instantaneous expectation of the player in the jackpot determination,
The length of the stochastic duration influences the degree of euphoria that a particular profit state lasts. In the present invention, the jackpot probability and the length of the probability variation duration in the probability variation state are set based on a predetermined correlation, so that when one of the jackpot probability and the length of the probability variation duration changes, the other changes. Also changes, so the nature of the gaming machine changes. As a result, the player finds two different aspects of the sense of fulfillment caused by the probability fluctuation, and the game becomes more interesting.

[0010] In the invention according to the second aspect, in the configuration according to the first aspect, the correlation is such that a value of a function having variables of a jackpot probability and a duration of a probability fluctuation in a probability fluctuation state is within a predetermined range. It is assumed that the function becomes larger as the jackpot probability in the probability fluctuation state is larger, and becomes larger as the length of the probability fluctuation continuation period is longer. More specifically, the function is obtained by multiplying the jackpot probability in the probability variation state by the length of the probability variation duration (claim 3).

[0011] If the jackpot probability in the probability fluctuation state is high, the length of the probability fluctuation period becomes short, and conversely, if the jackpot probability in the probability fluctuation state is low, the length of the probability fluctuation period becomes long. However, the nature of the gaming machine changes to the opposite. This allows
Furthermore, the game becomes interesting.

Further, if one of the jackpot probability and the length of the probability fluctuation continuation period in the probability fluctuation state takes a large value, the other becomes smaller. Therefore, the probability of the jackpot occurring in the probability fluctuation continuation period is not changed so much. Only the character of the gaming machine in the determination process can be changed.

According to a fourth aspect of the present invention, in the configuration of the second or third aspect, a changeover switch is provided,
The probability change mode switching means stores a plurality of sets of the jackpot probability and the length of the probability change duration in the probability change state, and is set so as to select from the set according to the state of the changeover switch.

Since the switching can be performed by the changeover switch, a single game machine having different characteristics can be realized.

According to a fifth aspect of the present invention, in the configuration of the fourth aspect, the changeover switch is provided on a front face of the gaming machine.

Since the changeover switch can be operated by the player, the player can switch the mood depending on his mood before starting the game or during the game.

According to a sixth aspect of the present invention, in the configuration of the second aspect of the present invention, the switching means randomly sets a set of the jackpot probability in the probability variation state and the length of the probability variation duration based on the correlation. Set to select.

Since the characteristics of the gaming machine are switched at random, the transition to the probability variation period is full of stimulation for the player.

According to a seventh aspect of the present invention, in the configuration of the sixth aspect of the present invention, a range switching means for switching the predetermined range from a plurality of numerical ranges is provided.

The larger the predetermined range is, the larger the jackpot probability and the length of the probability fluctuation period in the probability fluctuation state become, and the higher the probability of the jackpot occurring during the probability fluctuation period is. Become. Therefore, by selecting the predetermined range from among a plurality of numerical ranges, it is possible to take into account not only the difference in character but also the difference in ease of hitting a jackpot in the gaming machine.

According to an eighth aspect of the present invention, in the configuration of the seventh aspect, parameter switching means for switching a parameter defining a game content according to the numerical range selected as the predetermined range is provided.

By switching the parameters that define the game content, parameters that can further emphasize the difference in personality and that can be a gaming machine without a sense of unfairness even if the jackpot probability is different are, for example, paid out. It is the number of prize balls and the probability that the right to change the probability is given.

According to a ninth aspect of the present invention, in the configuration of the seventh or eighth aspect, the plurality of numerical ranges are set so that adjacent ones have an overlapping portion that overlaps each other, and The jackpot probability or the length of the probability fluctuation duration in the selectable probability fluctuation state includes those belonging to any of the numerical ranges adjacent to each other corresponding to the overlapping portion.

Even if the predetermined range is shifted to a numerical range adjacent to the predetermined range, it is not necessary to change the jackpot probability or the duration of the probability fluctuation, so that the control is not complicated. In addition, since the movement in the predetermined range does not change the jackpot probability or the length of the probability fluctuation continuation period, it becomes difficult for the player to read the settings such as the jackpot probability.

According to a tenth aspect of the present invention, in the configuration of the first to ninth aspects, the jackpot probability and the length of the probability variation duration in the probability variation state switched by the probability variation mode switching control means are determined by the player. To be notified.

Thus, the player can check the setting state of the jackpot probability and the length of the probability fluctuation continuation period in the probability fluctuation state, which is user-friendly.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) A preferred embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows the entirety of a pachinko gaming machine to which the present invention is applied, and FIG. 2 is an enlarged view of a part of the pachinko gaming machine.
11 and a front frame 112, and the front frame 112 is attached to the outer frame 111 so as to be freely rotatable in a horizontal direction with respect to the outer frame 111 by upper left and lower hinges 116. And so on. Pachinko gaming machines are mounted on gaming machine installation islands that are usually laid out in a plurality of rows with outer frames 111, and are alternately arranged with prepaid card units.

Inside the front frame 112, a metal frame 11 covering approximately 2/3 of the size of the upper side of the front frame 112 in the height direction.
3 is attached, and a glass frame 114 which borders the inner periphery of the metal frame 113 with the left side of the metal frame 113 as a support shaft is hinged so as to be openable and closable. A glass plate 115 is doubly loaded in the glass frame 114. The game board 21 is housed inside the front frame 112 at the back side of the glass plate 115 and faces the player with the glass plate 115 interposed therebetween.

The distance between the glass plates 115 is set so that the influence of the magnet from the outside does not affect the game balls on the game board 21 described later, and when the surface of the glass plate 115 is pressed, And the glass plate 1
It is set so that the game nail protruding in the 15 directions does not come into contact with the game nail.

A metal frame 113 is provided inside the front frame 112.
A bathtub-shaped upper plate 121 and a lower plate 124 protrude forward. The main body of the upper plate 121 is made of an ebonide or the like that is hardly contaminated. An outlet 122 for paying out prize balls is provided on the side of the upper plate 121.
Is open.

The upper plate 121 has a bulging portion which bulges toward the right and left, and a balance display portion 133 for displaying the balance of the prepaid card inserted in the prepaid card unit is provided at the top of the bulging portion on the left side. There are provided a ball lending button 131 to be depressed when a game ball is lent, and a settlement button 132 for settlement.

A game mode changeover switch 15 is provided at a position close to the ball lending button 131 and the like, and switches a game mode at the time of a probability change described later.
The game mode switching switch 15 is a small rotary switch, and can be set at six positions at a predetermined switching angle (for example, 30 °) when the knob 151 is rotated. The rotation angle positions of the knob portions correspond to different game modes on a one-to-one basis, and the player can select a game mode. In the game mode, as will be described later, the jackpot probability at the time of probability change is defined, and the larger the knob portion 151 is turned to the right, the higher the jackpot probability at the time of probability change.

The lower plate 124 has an overflow ball discharge port 125 on the side surface thereof, and serves as an outlet for a return ball that has failed to fire while overflowing when the upper plate 121 is full. Also,
The player operates the upper plate ball pulling lever 123 to communicate with the upper plate 121 through the overflow ball discharge port 125, and can move the game balls of the upper plate 121 to the lower plate 124. It is. When the lower plate 124 is full of game balls, the lower plate 124 can be discharged by opening the bottom surface of the lower plate 124 by operating the lower plate pulling lever 126, and the game balls can be placed in a separate box. Can be transferred.

On the right side of the lower plate 124, a firing handle 141 is provided.
Is provided. The firing handle 141 is provided with a ring-shaped rotating ring 143 coaxially on the outer periphery of a grip portion 142 that is mounted to protrude toward the near side. If the player rotates the rotating ring 143 clockwise, A game ball supplied from the plate 121 can be fired on the board of the game board 21.

Next, the game board 21 will be described with reference to FIG. On the board of the game board 21, strip-shaped rails 22, 23 are provided perpendicular to the board so as to border the board in a substantially circular shape. The rails 22 and 23 are partially doubled on the left side in the figure, and a game ball is fired along the outer rail 23 by operating the firing handle 141, and a substantially circular area of the board surface surrounded by the rails 22 and 23. Get in. A display portion 641 of a special image display device, which will be described later, is provided in the center of the substantially circular area, and various winning ports 31 and 35 and a large winning port 3 are provided therearound.
2. A large number of game nails 25, windmills 26 and 27, etc. are provided.

The special image display section 641 is an LCD panel, and is provided in an image display frame 24 fitted in an opening formed in the game board 21 with the display surface facing forward. The image display frame 24 is provided with a normal image display section 41 having 7-segment LEDs, a special symbol hold display section 42 having four LEDs each, and a normal symbol hold display section 43.

Below the image display frame 24, there is provided an ordinary motorized accessory 31 as a first-type starting port, which is a winning port.
The ordinary electric accessory 31 is an electric tulip operated by a solenoid.

A large winning opening 32 is provided below the ordinary electric accessory 31.
Is provided. In the big winning opening 32, the attacker door 321 is electrically operated to open and close a wide entrance, and when "open", many winnings can be expected.

On the left and right sides of the image display frame 24, normal image operation gates 34 are provided. When a game ball passes through the gate 34, the display image of the normal image display section 41 changes. The game ball that has entered the normal image operation gate 34 is again the game board 21.
Appear on top.

An out port 37 is opened at the bottom of the board of the game board 21. Of the game balls fired on the board of the game board 21, the above-mentioned winning ports 31 and 35 and the large winning port are provided. A game ball that has not entered the ball 32 is taken in as an out ball.

Some of the windmills 27 are made of colored transparent plastic, are provided with lamps (not shown) behind the windmills 27, and are configured to shine. Together with the side lamps 28 that flicker intricately, the decorative effect of the game board 21 during play is provided. Demonstrate. Further, a sound is generated from a speaker (not shown) in accordance with the progress of the game to enhance the sense of reality during the game.

FIG. 4 shows the back side of the pachinko gaming machine. The above-mentioned gaming board 21 has a mechanical board 5 along its back face.
1 is detachably provided. The mechanism board 51 is provided with a ball tank 52 at an upper portion and a game ball passage 53 below the ball tank 52.
The game balls can be supplied to the prize ball payout device 56 and the ball rental payout device 57 through the fifth ball 5.

When a game ball enters the above-mentioned winning opening 31 or the like of the game board 21, the winning ball payout device 56 operates according to the control of the later-described winning ball control device 62, and a predetermined number of game balls are discharged from the outlet 122. From the upper plate 121.

Further, a launching device 58 for a game ball having a built-in launching motor and the like is provided.

On the game board 21 and the mechanism board 51, a main control device 61 for controlling the whole progress of the game is provided, and various sub devices 62, 63, 64,
65 and 66 are attached. The sub-devices 62 to 66 include a device for controlling the payout of a prize ball and a loaned ball (hereinafter, appropriately referred to as a prize ball control device) 62 and a device for controlling the launch of a game ball (hereinafter, appropriately referred to as a launch control device). 63, a device for displaying a special symbol or the like (hereinafter, appropriately referred to as a special image display device) 64, a device for controlling light emission of various display and effect lamps (hereinafter, appropriately referred to as a lamp control device) 6
5. There is a device 66 for controlling the output sound of the speaker (hereinafter referred to as a sound control device as appropriate).

FIG. 5 shows the electrical configuration of the pachinko gaming machine 1 constituted by the above-described devices 61 to 66 and the like.
The main control device 61 is an RO storing a game control program.
It is configured as a logical operation circuit centered on an 8-bit one-chip microcomputer having a built-in RAM serving as a work area for M and arithmetic operations.
11 to 718 and various actuators 719 to 72
An external input / output circuit for inputting / outputting data from / to the device 1 is also provided.

The various switches 711 to 718 to which the main control device 61 receives signals will be described.

The full tank switch 711 is a pressure sensor provided in the lower tray 124, and detects that the lower tray 124 is full with game balls. The replenishment switch 712 is a pressure sensor provided in the ball tank 52, and detects that there is insufficient game balls in the ball tank 52.

The first-type starting port switch 713 is provided in the normal electric accessory 31 and the normal image operation switch 714 is provided in the normal image operation gate 34, and each detects a game ball. When the ordinary electric accessory 31 is won, the main control device 61 transmits a command to the special image display device 64 to change the special image as described above, and stores the above-mentioned reserved storage number up to four.

An accessory continuous operation switch (V switch) 715 is provided in the special winning opening 32 and detects that a winning game ball has passed through a special area. The count switch 716 detects all the game balls that win in the special winning opening 32.

The touch switch 719 is connected to the firing handle 14.
To detect whether or not the player is touching the firing handle 14, and it is known whether or not the gaming table is operating.

The main controller 61 receives an output signal of the game mode changeover switch 15 and can monitor the setting state of the game mode changeover switch 15 in a main routine that starts up at a predetermined cycle.

The actuators 719 to 721 driven by the main controller 61 will be described. The special winning opening solenoid 719 is used for opening and closing the attacker door 321, the V solenoid 720 is used for opening and closing the above-mentioned special area in the special winning opening 32, and the ordinary accessory solenoid 721 is used for opening and closing the ordinary electric accessory 31. For the attacker door 321, a basic opening time (normally 10 seconds) is set, and before the opening time is counted up, the count switch 7 is opened.
16 is a predetermined number (usually, 10
) Is closed.

The prize ball control device 62 is configured as a logical operation circuit using a microcomputer, and the main control device 61
When there is a prize according to a command command from the player, the ball cutting motor 722 is operated to control the payout of the prize ball, and the bi-directional communication is performed with the prepaid card unit 723 and the CR settlement display device 724 to carry out the rental ball. Controls supply. The CR settlement display unit 724 includes the push buttons 131 and 132 of the upper plate 121 and the balance display unit 13.
The ball lending switch, which is built in at the position where the ball lending button 131 is pressed, is turned on when the ball lending button 131 is pressed, a payment switch that is turned on when the payment button 132 is pressed, and an LED for displaying a numerical value in the balance display unit 133.

The firing control device 63 controls the driving of the firing motor 727 in accordance with the amount of rotation of the firing handle operated by the player from the rotation amount sensor 725, and includes a one-chip CP.
Consists of U. The firing control device 63 has a firing stop switch 7
26 is connected, and when operated by the player, the firing is temporarily stopped. In addition, a touch lamp 728 that indicates that the touch switch 718 is on is connected.

The special image display device 64 includes the image display device 6
In addition to 41 and four special image holding LEDs 642, an image control device 643 that controls these based on a command from the main control device 61.

The lamp control device 65 has a one-chip CPU, is provided with a chip for preventing short-circuit at a lamp output portion, receives an instruction from the main control device 141, and stores an LED 729 for displaying a normal image and a normal image holding memory. LED for
730 and various lamps 731 and L for decoration
The EDs 732 are driven for lighting.

The sound control device 66 includes a one-chip CPU with a built-in mask ROM storing a large number of voice data,
A sound source IC, an amplifier, and the like are controlled by the main controller 61. Upon receiving a command from the main controller 61, the recorded sound source is assembled into a phrase and the speaker 733 is driven and controlled.

The transmission / reception circuit between the main control device 61 and each of the above devices 62 to 66 is configured as a one-way communication circuit that transmits only from the main control device 61. This one-way communication configuration can be configured using an inverter circuit or a latch circuit.

The operation of the present ball game machine will be described. A game ball is fired according to the amount of rotation of the firing handle 14, and if the ball enters the winning opening 31, 32, or 35, a prize is won and a predetermined prize ball is paid out. If the aim is to obtain a high number of winning prize balls, usually, the first kind starting port 31 is aimed. Then, if there is a ball entering the first type starting port 31 before the special symbol comes to rest, the main control device 61 counts the number of reserves up to a predetermined value (4) in accordance with the number of balls entered. This data is reflected in the number of lighting of the special image hold storage LED 643.

Then, when the image displayed on the special image display section 641 becomes a big hit, the game shifts to a special game, and the attacker door 321 is opened, and a state in which many prizes can be expected appears.
Then, if there is a game ball passing through the special area of the special winning opening 32, after the attacker door 321 is once closed as described above, the game of the next round with the attacker door 321 being opened after a predetermined interval is performed. The right to do is updated up to a predetermined number.

FIG. 6 shows a main part of a main routine executed by the main control device 61, and a description will be given mainly of a jackpot determination process. The main routine is started at a predetermined cycle by a hardware interrupt, and transmits and receives a command to and from the award ball control device 62 and the like.
In the illustrated example, it is determined whether or not a ball has entered the first-type starting port 31 (step S100), and if there is a ball, a random number is extracted (step S110). The random numbers are: (1) a jackpot determination random number for determining whether or not a jackpot is reached, (2) a reach determination random number for determining whether or not the symbol is to be stopped after reaching in the case of a miss, (3) a special image display unit 641 , A variation pattern selection random number that selects the time from the start of the change of the displayed symbol to the stationary state, (4) a static symbol selection random number that selects the big hit symbol (static symbol) when stationary, and (5) a large jackpot probability when the probability is changed. A random number selected from the jackpot probability selection random number or the like to be determined, and any number between 0 and each maximum value is extracted. The jackpot determined random number is described below.
Six types are prepared as those in the probability fluctuation state in addition to those in the normal game.

The random number is obtained, for example, by providing a counter corresponding to the type of the random number and incrementing the count value by one each time the main routine starts up toward the maximum value. The rising cycle of the main routine is 2ms
And the random numbers are extracted at a rate of occurrence that is substantially the same for all numbers. For example, the jackpot determination random number at the time of the normal game is extracted at the appearance rate (1/256) in which the numbers “0” to “255” are equal as in the conventional game machine (in the following description, the normal game state Jackpot probability 1/256
It is described as). Further, in order to avoid synchronization between random numbers of different types, a counter for generating an initial random number is provided. For example, when the jackpot determination random number reaches “255”, it does not necessarily become “0” next time. , Becomes the number designated by the initial random number, and then increments toward the maximum value.

Next, it is determined whether or not the extracted jackpot determination random number is a predetermined number (for example, “1”) corresponding to the jackpot (step S 120). Is extracted (step S130), and the variation pattern is selected (step S140).

Next, it is determined whether or not the extracted still symbol is a specific symbol to which a right of probability variation is given (step S150). This is substantially determined by the number of the extracted static symbol selection random number. If an affirmative determination is made, the jackpot probability in the probability fluctuation state and the probability fluctuation continuation number, which is the length of the probability fluctuation continuation period, are selected based on the output signal of the game mode changeover switch 15 (step S16).
0). This step S160 is a procedure as a probability variation mode switching means. The selection of the jackpot probability in the probability variation state is specifically performed by designating the jackpot determination random number extracted in the determination of the jackpot from the above six types of jackpot determination random numbers. Further, the probability fluctuation continuation number is set as the number of times of determining whether or not a big hit at the time of entering the first-type starting port 31 (steps S110 and S120) with the selected big hit probability. It is decremented every time a ball enters the seed starting port 31. Then, when it becomes 0, the jackpot determination random number is extracted again in the normal gaming state. A period in which the number of times becomes equal to 0 from the selected number of times of continuous probability fluctuation is appropriately referred to as a time reduction.

Thus, in the game after the end of the special game, in determining whether or not a big hit is made by entering the first-type starting port 31, it is determined whether or not the big hit is at the selected big hit probability. The gaming state continues up to the selected probability fluctuation continuation number. Main controller 61 at this time
Is the same as the conventional one, except that the maximum value of the jackpot determination random number that defines the jackpot probability and the probability fluctuation continuation number are selected.

Table 1 shows a combination of the jackpot probability M and the probability variation continuation number N in the probability variation state. One of the combinations is selected according to the turning position of the game mode changeover switch 15. The jackpot probabilities M that can be selected are all values in the normal gaming state (1/25
Of course, the value is higher than 6). Among the above six types of jackpot determination random numbers, those corresponding to M = 1/4 take numbers between "0" to "3", and those corresponding to M = 1/8 are "0" to "7". And take M = 1
The one corresponding to / 16 takes a number between “0” to “15”, and the one corresponding to M = 1/32 is “0” to “31”
The numbers corresponding to M = 1/64 take numbers between "0" and "63", and those corresponding to M = 1/128 take numbers between "0" and "127". Take the number.
In each case, the numbers from "0" to the maximum value are extracted with the same occurrence rate. One of the numbers generated by the counter corresponding to each jackpot probability M is set as the jackpot number. The jackpot numbers are all jackpot probabilities M
Of course, may be common, for example, "1" is a jackpot.

In this example, since the jackpot probability is 1/2 ^k (k = 2 to 8) including that of the normal game, the counter for generating the jackpot determination random number is “0”.
~ 255 may be generated, and the number of jackpot numbers may be set to be different according to the value of the jackpot probability M. For example, M = 1 / among “0” to “255”
In the case of 4, 64 are set as jackpot numbers, and in the case of M = 1/8, 32 are set as jackpot numbers. In this case, the number of jackpots is “0” to “2 ^8-k −1” (jackpot probability =
By setting the serial numbers as in [1/2 ^k ), it is possible to easily determine whether or not a big hit has occurred, and it is possible to reduce the control load.

Here, considering a function represented by M × N using the jackpot probability M and the probability variation continuation number N in the probability variation state as variables, the game mode changeover switch 15
When the function values are calculated for the six sets of M and N selected by (hereinafter, this function value is referred to as a P value), the values are as shown in the third column of the table, and all satisfy P <1/2. . Then, the jackpot probability M changes in the range of 1/4 to 1/128, but the larger the jackpot probability M, the smaller the probability variation continuation number N, and the smaller the jackpot probability M, the larger the probability variation continuation number N. Jackpot probability M,
Each of the probability change continuation counts N is a factor that increases the probability of a jackpot being generated within a time saving time. Therefore, if one of the jackpot probability M and the probability change continuation count N takes a large value, on the contrary, the jackpot probability M By setting the other one of the probability fluctuation continuation number N to a small value, the game mode changeover switch 15 is switched, whereby the character of the gaming machine can be positioned at the opposite end.

That is, if the jackpot probability M is high, the probability fluctuation continuation number N decreases, and the jackpot probability becomes a probability sufficient to give the player a sense of expectation. You will not be able to enjoy the benefits. It is possible to provide a gaming machine having a very thrilling game. Further, when the jackpot probability M is low, the probability fluctuation continuation number N increases. Although the jackpot probability M is higher than the jackpot probability in the normal game state, it does not mean that the player is fully filled with expectation. You can enjoy the feeling. It is possible to provide a gaming machine having a characteristic of enjoying the benefits of the probability fluctuation and the superiority over other players.

Therefore, the player can enjoy a thrill of one or eight by increasing the jackpot probability M if he or she wants to produce a result quickly. , You can slowly enjoy the sense of fulfillment that has acquired the right to change the probability. The character of the gaming machine can be changed by the selection of the player.

Therefore, it can be effectively used as follows. The player can increase his / her willingness to challenge by switching the game mode depending on the mood of the day, and can avoid refreshing and feeling monotonous by switching the game mode during the game. For example, if the mood is very exciting, switch to the game mode with a relatively high probability and start the game, but if there is no luck,
At the opposite end of the game mode, i.e., if the game mode has a relatively high probability, it is switched to the game mode with a relatively low probability, or if the game mode has a relatively low probability, the probability is relatively high. Switching to a higher game mode is conceivable.

The fourth column in the table also shows the jackpot occurrence probability Φ within the working hours. The jackpot occurrence probability Φ is calculated based on the jackpot probability M and the number N of times of the probability fluctuation by the formula (1).
It calculated according to. Φ = 1− (1-M) ^N (1)

Also, in any of the combinations in the table, the jackpot occurrence probability Φ within the time saving time is substantially uniform, and it is almost avoided that the number of acquired prize balls depends on which game mode is selected. can do.

The changeover switch is provided on the front of the gaming machine so that the player can switch the game mode.
The position of the changeover switch may be changed so that the changeover can be made at the store. In this case, it is conceivable that the changeover switch is provided on the back side of the game machine, or the game machine body and the changeover switch are connected by a cable. In this case, the game machine can be given an appropriate character by following the tendency of the player's taste and the customer base who visits the game space without replacing the game machine. It is convenient for the venue.

Note that the jackpot probability M and the probability fluctuation continuation number N are not limited to those described in the present embodiment.
Any combination may be used as long as the value range of the P value is determined and the value falls within the range. Table 2 summarizes the possible values of the probability fluctuation continuation number N when the jackpot probability M is selectable as in the present embodiment.

In setting the combination of the jackpot probability M and the probability variation continuation number N, if the switchable probability variation continuation number N is determined first, as shown in Table 3, the jackpot probability M may be taken. it can.

Note that the extracted data for specifying the static symbol and the data of the variation pattern are transmitted to the special image control device 643, and the display symbol changes on the image display portion 641 based on the data, and a predetermined symbol is displayed when the stationary symbol is at rest. The big hit symbol will be displayed.

If a negative determination is made in step S150, the state does not shift to the probability variation state, and the determination as to whether or not a jackpot is made is made with a low probability (1/256).

If a negative determination is made in step S120, it is determined whether or not the reach determination random number is a predetermined number (step S170). If an affirmative determination is made, an image is extracted so as to be in a reach state (step S170). (S180), a variation pattern is selected (step S190). The image control device 643 displays the reach state, and finally stops at the detached symbol.

If a negative determination is made in step S170, an image is extracted so as not to reach the reach state (step S200), and a variation pattern is selected (step S210). In the image control device 643, the image is finally released and stopped at a design so as not to be in the reach state.

Incidentally, seven types of jackpot determination random numbers, including those in the normal game state, are extracted in total. However, the maximum value of the count value of the random number generation counter is made variable, and this maximum value is determined. The value may be set according to the extracted jackpot probability selection random number. That is, the maximum value is “255” in the normal gaming state as described above, and “3”, “7”, “15”, “31”, “6” in the probability fluctuation state.
3 ”or“ 127 ”is set according to the jackpot probability selection random number.

Further, a notifying means may be provided for notifying the player of the jackpot probability M and the number N of times of probability fluctuation selected by setting the changeover switch 15. The notifying means may display each parameter on the screen using a special image display device, or a light emitting member such as a lamp may be arranged at a predetermined place where the player can easily see, and the light may be notified by the light emission. Good. In the case of a lamp, by switching the number of lights and the blinking cycle of a plurality of lamps according to the setting of the changeover switch 15, the difference in the game mode can be intuitively notified.

(Second Embodiment) FIG. 7 shows an electrical configuration of a ball game machine according to a second embodiment of the present invention, and FIG. 8 shows a part of a control program executed by the main controller. First
In the ball and ball game machine of the embodiment, a part of the control program executed by the main control device is replaced with another setting, and a description will be given focusing on differences from the first embodiment. In this embodiment, the game mode changeover switch shown in the first embodiment is not provided.

In the control program of main controller 61A,
If there is a ball in the first-type starting port 31, a random number related to the jackpot determination is extracted (step S111). Here, the jackpot probability selection random number for selecting the jackpot probability M is extracted together with the one described in the first embodiment. For the jackpot probability selection random numbers, numbers from “0” to “5” are generated.

When it is determined that a big hit has occurred (step S1)
20), the right to shift to the probability variation is granted (step S150), and the jackpot probability M in the probability variation state is obtained.
And the probability variation continuation number N is selected (step S16).
1). This is performed by associating the numbers of the jackpot probability selection random numbers with one set of the six types of jackpot probabilities M and the probability variation continuation number N of the first embodiment on a one-to-one basis. Step S161 is a procedure as probability variation mode switching means.

Also in this embodiment, the jackpot probability M and the probability fluctuation continuation number N are set under a correlation defined by P <１ ／.

In the present embodiment, since the jackpot probability M and the probability variation continuation number N are set by random numbers, the player does not know the game mode at the time of the probability variation, and the sense of thrill increases. Further, since there is no need to provide a changeover switch, the present invention can be implemented without increasing the number of parts, and the cost can be reduced in terms of manufacturing. In addition, since only the control program needs to be changed substantially, it is possible to provide an amusement machine that is both entertaining and entertaining with the same simplicity as a simple upgrade of the control program without hardware design or redesign.

(Third Embodiment) FIG. 9 shows an electrical configuration of a ball game machine according to a third embodiment of the present invention, and FIG. 10 shows a part of a control program executed by the main control device. In the ball game machine of the second embodiment, a part of the control program executed by the main control device is replaced with another setting.
The description will focus on the differences from the above embodiments.

In this embodiment, the numerical value range of the P value is 4
It can be selected from among stages, and corresponding to each numerical range, the jackpot probability M and the probability fluctuation continuation number N, respectively.
A plurality of combinations can be selected as in the second embodiment. For this reason, in the main control device 61B, a P-value selection random number is generated on the control program in addition to the random number shown in the second embodiment. The P-value selection random numbers are generated such that numbers from “0” to “3” are substantially randomly generated like other random numbers.

Table 4 shows that the numerical value range of the P value is 1/2 ≦ P <1,
Table 5 shows the selectable jackpot probability M and the probability that can be taken corresponding to the jackpot probability M when the numerical value range of the P value is 1 ≦ P <2 and Table 6 is 2 ≦ P. This table summarizes the range of the number N of times of continuous fluctuation, and shows a combination of the jackpot probability M and the number N of times of continuous probability fluctuation corresponding to each of the four numerical ranges of P values together with Table 2 in the case of P <１ ／. Will be done. Of these, for example, P
Each of the numerical ranges of the values is defined as a jackpot probability M of (1/1 /
(4 to 1/128), the jackpot probability selection random number may be one type in common for all the P value numerical ranges. In this case, the jackpot probability M is determined by the jackpot probability selection random number, and the probability variation continuation number N is determined by the P value selection random number and the jackpot probability selection random number. Therefore, the probability fluctuation continuation number N is R
It is sufficient that the OM is provided with a table for inputting the numbers of the jackpot probability selection random numbers and the P value selection random numbers. Of course, if the number of combinations of the jackpot probability M and the probability variation continuation number N differs depending on the numerical value range of the P value, a jackpot probability selection random number is required accordingly.

The P value switching random number is, for example, “0”
<1/2, “1” is 1/2 ≦ P <1, “2” is 1 ≦ P <
2, “3” corresponds to 2 ≦ P.

The main controller 61B executes the procedure shown in the figure. That is, if there is a ball in the first-type starting port 31,
Random numbers are extracted in the same manner as in the above embodiments (step S
112). In the present embodiment, it is extracted including the P value selection random number.

Then, when the right to shift to the probability change is granted at the jackpot (step S120) (step S1).
50), the numerical range of the P value is selected (step S16)
2) The jackpot probability M and the probability fluctuation number N are selected (step S163). Step S162 is a procedure as range switching means, and step S163 is a procedure as probability variation mode switching means.

According to the present embodiment, even if the P value changes in four numerical ranges and the jackpot probability M of the probability variation state is the same, it is possible to select one having a different probability variation continuation number N.

That is, when P <1/2, the probability variation continuation number N is small and the jackpot occurrence probability Φ within the time saving is also kept low, so that the result as to whether the time saving is short and the jackpot continues or not appears quickly. It has a tendency, and the normal game state is the main game.

When 1/2 ≦ P <1, the probability fluctuation continuation number N
However, the jackpot occurrence probability Φ within the time savings is also suppressed somewhat low, so the result of whether the time saving is somewhat short and the jackpot continues tends to appear before getting tired of the probability fluctuation state, the jackpot probability is It is a game that is a game centered on normal probabilities but adds a sense of fulfillment of probability fluctuations to some extent.

When 1 ≦ P <2, the probability variation continuation number N is slightly longer, and the jackpot occurrence probability Φ within the time saving becomes slightly higher, so that the result of whether the time saving is slightly longer and the jackpot continues is slower to appear. It is a game that has a tendency to be enjoyed, and that a normal game and a game based on probability fluctuation can be enjoyed on average.

When 2 ≦ P, the number N of times of continuous probability fluctuation is long,
Since the jackpot occurrence probability Φ within the time saving is also high, the result of whether the time saving is long and the jackpot continues tends to appear late, and the game based on the probability variation becomes the main game.

[0100] Therefore, the player can dynamically enjoy the change in personality.

Also, two types of static symbol selection random numbers are prepared with different numbers of appearance ratios of the numbers corresponding to the symbols to which the right to change the probability is given, and the range of the P value corresponds to 2 ≦ P (see the above example). In other words, if the P-value selection random number is “3” and the jackpot occurrence probability within the time saving period is high, the probability of probability fluctuation at the time of the next big jackpot is low, that is, the above two types of static symbol selection random numbers Of these, the one with the lower probability may be extracted. This can be realized by implementing, on the control program, a parameter setting means for selecting, from the two types of static symbol selection random numbers, the main control device in accordance with the extracted P-value selection random numbers. .

Note that the number of award balls to be paid out may be changed in accordance with the change of the numerical value range of the P value in four stages. This can be realized by implementing, on the control program, a parameter setting unit that sets the number of winning balls to be paid out for winning in the main control device according to the extracted P-value selection random numbers.

The jackpot probability M is calculated using Table 2, Table 4 to Table 6.
When the combination of the probability fluctuation continuation number N is set, the jackpot probability M is determined first, and the probability fluctuation continuation number N
Is selected from the second column, but the number N of continuous probability fluctuations may be determined first. Tables 7, 8, and 9 show specific examples in this case. Table 3 corresponds to P <1/2. In this example, since the value of the probability fluctuation continuation number N differs for each table, both the probability fluctuation continuation number N and the jackpot probability M are stored in the ROM in advance, using the P value switching random number and the jackpot probability switching random number as inputs. Will be determined based on the table.

In the present embodiment, in the configuration in which the P value is switched together with the jackpot probability M and the probability variation continuation number N in the probability variation state, the switching is not performed on the control program based on random numbers, but in the game. It may be performed by setting a changeover switch so that only the game facility manager of the place can operate. The changeover switch is connected to the game machine main body by a cable or provided on the back side of the game machine. In this case, the manual switching by the changeover switch may be performed only in the range of the P value, or two changeover switches may be provided to change the range of the P value and to switch the set of the jackpot probability M and the probability variation continuous number N. May be manually switched.

[0105] In the gaming arcade, the characteristics of the gaming machine can be adjusted more finely, so that it is possible to adjust the difference in the customer class, the change in the taste of the player, and the sales form different for each gaming arcade. It is possible to respond without changing the gaming machine.

In the main control device as the probability variation mode switching control means, together with the numerical value range of the P value,
When switching the set of the jackpot probability M and the probability variation continuation number N, the following may be performed. Normally, when the numerical value range of the P value is switched, the number N of continuous probability fluctuations also changes to the number corresponding to the P value. However, an overlapping portion is provided in the adjacent numerical value range of the P value, The set of the jackpot probability M and the probability fluctuation continuation number N that are also included in the numerical range of? Thereby, control can be simplified. Further, the probability variation continuation number N does not change even if the numerical value range of the P value is switched, so that it becomes difficult for the player to analyze the setting of the gaming machine.

In each of the above embodiments, the jackpot probability M and the probability fluctuation continuation number N are set so that the P value falls within a predetermined range. There are a plurality of probability fluctuation continuation numbers N (big hit probability M) to be combined with (probability fluctuation continuation number N). For example, M = 1/2 ≦ P <1 (Table 4)
Taking 1/32 as an example, the probability variation continuation number N that can form a set with M = 1/32 is, as is known from the table, 16, 17, 18,. Exists. Therefore, another type of random number may be prepared to expand the variation of the combination of the jackpot probability M and the probability variation continuation number N.

In each of the above-described embodiments, the jackpot probability M and the probability fluctuation continuation number N are defined by the P value.
When one becomes large, the other becomes small. However, the present invention is not limited to this, and the jackpot probability M and the probability fluctuation continuation number N may be in a predetermined correlation. When one changes, the other changes. It should just be. Even with such a configuration, it is possible to enjoy a change in the personality of the gaming machine, and to realize a highly entertaining game utilizing a gaming mode in which the game mode shifts to a probability variation state after a big hit.

[0109]

[Table 1]

[0110]

[Table 2]

[0111]

[Table 3]

[0112]

[Table 4]

[0113]

[Table 5]

[0114]

[Table 6]

[0115]

[Table 7]

[0116]

[Table 8]

[0117]

[Table 9]

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a first pachinko gaming machine to which the present invention is applied.

FIG. 2 is a partially enlarged view of the pachinko gaming machine.

FIG. 3 is a front view of a gaming board of the pachinko gaming machine.

FIG. 4 is a rear view of the pachinko gaming machine.

FIG. 5 is a block diagram showing an electrical configuration of the pachinko gaming machine.

FIG. 6 is a flowchart of software executed on the pachinko gaming machine.

FIG. 7 is a block diagram illustrating an electrical configuration of a second pachinko gaming machine to which the present invention has been applied.

FIG. 8 is a flowchart of software executed on the pachinko gaming machine.

FIG. 9 is a block diagram showing an electric configuration of a third pachinko gaming machine to which the present invention is applied.

FIG. 10 is a flowchart of software executed on the pachinko gaming machine.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Pachinko game machine (ball game machine) 14 Shooting handle 15 Game mode changeover switch (changeover switch) 21 Game board 32 Big winning opening 61, 61A Main control device (probability change mode changeover control means) 61B Main control device (probability change) Mode switching control means, range switching control means, parameter switching control means) 62 prize ball control device

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Etsumi Ibarada 1-3-3 Taiheidori, Nakagawa-ku, Nagoya-shi, Aichi Takaonai F-term (reference) 2C088 AA41 AA79

Claims (10)

[Claims] Claims: 1. A prize hole for a game ball fired on a game board is provided, and when a game ball enters the prize hole, a prize ball is paid out, and depending on the progress of the game, a special game of another type is provided. A transitionable ball game machine, and when a game ball enters a predetermined entrance which is set in advance, a jackpot which is a condition for transition to a special game is randomly determined with a predetermined jackpot probability. In the ball game machine that performs the jackpot determination process and randomly determines whether or not to shift to the probability variation state in which the jackpot probability is increased after the end of the special game with a predetermined probability variation probability, the jackpot probability during the probability variation period and A probability variation mode switching control means for switching the length of the probability variation duration, and a predetermined correlation between the jackpot probability and the probability variation duration in the probability variation state. A pinball game machine, characterized in that it is set to the original. 2. The ball-ball game machine according to claim 1, wherein the correlation is such that a value of a function having a variable of a jackpot probability in a probability variation state and a length of a probability variation duration is included in a predetermined range. That is, the above-mentioned function is such that the larger the jackpot probability in the probability fluctuation state is, the larger the function becomes, and the longer the probability fluctuation continuation period is, the larger the value of the function becomes. 3. The ball game machine according to claim 2, wherein the function is obtained by multiplying the jackpot probability in a probability fluctuation state by the length of a probability fluctuation period. 4. The ball game machine according to claim 2, further comprising a changeover switch, wherein the probability change mode changeover control means controls the jackpot probability and the length of the probability change duration in the probability change state. A ball and ball game machine storing a plurality of sets and selecting from the sets according to the state of the changeover switch. 5. The ball game machine according to claim 4, wherein the changeover switch is provided on a front surface of the game machine. 6. The ball game machine according to claim 2, wherein the probability variation mode switching control means randomly sets a set of a jackpot probability and a probability variation duration in a probability variation state based on the correlation. A ball game machine set to be selected. 7. A ball game machine according to claim 6, further comprising a range switching control means for switching said predetermined range from a plurality of numerical ranges. 8. The ball game machine according to claim 7, further comprising parameter switching control means for switching a parameter defining game contents in accordance with said numerical range selected as said predetermined range. . 9. The ball game machine according to claim 7, wherein the plurality of numerical ranges are set so that adjacent ones have an overlapping portion where each other overlaps with each other, and is selectable. A ball game machine including a jackpot probability or a length of a probability fluctuation continuation period in a probability fluctuation state, which includes one belonging to any of the numerical ranges adjacent to the overlap portion. 10. The ball game machine according to claim 1, wherein the player is notified of the jackpot probability and the duration of the probability fluctuation period in the probability fluctuation state switched by the probability fluctuation mode switching control means. Ball game machine equipped with a notifying means.