JP2005185771A - Pachinko machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To yield a profit in a Pachinko parlor by eliminating dissatisfaction of a player and satisfying the player with original fulfillment of a pachinko game. <P>SOLUTION: When a passing sensor 12b detects the passing of a game ball, this Pachinko machine draws a lottery using random numbers in either probability mode of a low probability mode or a high probability mode, when the player fails in the lottery during non-producing a right, a rotating part 12e of the sorter 12 is clockwise rotated to enter a game ball positioned in a recessed part 12f into a specific winning hole 12c. When the player wins the lottery during producing the right, the rotating part 12e is counterclockwise rotated to enter the game ball in the start hole 12d for opening the large winning hole. When the probability mode for drawing the lottery is the high probability mode in the lottery, this game machine acquires the random numbers for use in the lottery, only when the acquired random number is a predetermined specific value A, shifts to the low probability mode and, only when the acquired random number is a predetermined specific value B in the lower probability mode, shift to the high probability mode. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  In the present invention, when a game ball (sometimes simply referred to as a ball) wins a specific winning opening arranged on the game board, a right to win is generated. The present invention relates to a pachinko machine called a right object (type 3) which is in a state of exercising the right to open a grand prize opening when a ball is won in the mouth and a pachinko machine having a similar function.

As a conventional third type pachinko machine, there are those described in Patent Documents 1 and 2.
As shown in FIG. 8, the ball ball game machine (Pachinko machine) of Patent Document 1 includes a symbol display device 111, four reserved ball lamps 112, and a game area PA defined by rails of the game board 100. The symbol starting port 113, the sorting device 114, the storage frame 115 for housing the sorting device 14, the specific winning port 116, the losing winning port 117 and the big winning port 118 are configured.

  The distribution device 114, which is a characteristic element of Patent Document 1, has a storage hole 114a that can be rotated clockwise and counterclockwise and that can store one ball. When a ball enters the opening 115a having a width slightly larger than the diameter of the ball, the storage hole 114a waits at that position until it reaches the opening 115a by rotation, and the storage hole 114a is almost directly below the opening 115a. When positioned, the ball falls into the storage hole 114a. While the ball is maintained in the storage hole 114a by the storage frame 115, when the storage hole 114a comes to a position directly above either the specific winning opening 116 or the off winning prize opening 117, the specific winning opening 116 or the out winning prize opening, respectively. It is made to fall to 117. Further, when the game condition is established and the game ball is distributed to the specific winning opening 116, a right is generated, and when the game ball passes through the start passing gate (third type start gate) 119 during the generation of the right, the big winning opening is obtained. 118 is opened.

As shown in FIG. 9, the pachinko machine of Patent Document 2 is led to a main body provided with an inlet 144 and a start winning opening (third type start opening) 148 spaced apart from the inlet 144 and the inlet 144. A starting ball winning device 140 having a holding portion 147 for holding a game ball and a rotating body 146 that rotates at a preset rotation speed by a driving body 145, and a game ball wins a specific winning opening (not shown). The right state is maintained, and every time a game ball wins the start winning port 148 of the start winning device 140 during the right state, this is detected and while a predetermined number of game balls are won, A rotary winning device that opens a door (not shown), and when the door of the variable winning device is closed during the right state, the rotational speed of the rotating body 146 until the game ball 155 wins the start winning port 148. Is preset It has been made to increase the rotation speed.
Japanese Patent Laid-Open No. 2003-93656 JP-A-6-319853

By the way, there are two types of conventional pachinko machines called “rights”, which have a constant probability of right generation when no right is generated, and a low probability and a high probability. A gaming machine with a fixed probability waits for the right to be generated, and when the game is repeated and the right is generated, the predetermined number of times of winning a prize is opened, and an almost constant big hitting ball is obtained.
On the other hand, in the case of gaming machines having two types of states, low probability and high probability, as with certain gaming machines, first wait for the right to be generated and acquire a certain amount of big hit balls after the right has been generated. become. The difference from a gaming machine that has only a certain probability is that the right generation probability changes to a high probability after this, and the next right is generated in a relatively short time, and after the occurrence, it is almost constant as before. Will win a big hit. Thereafter, the state returns to the low probability state or continues to the high probability state until the predetermined condition is satisfied, and then returns to the original state.

In such a gaming machine, the one with a certain probability from the initial right acquisition, only the big hit ball of that time, and the two types of probabilities are low from the big hit ball due to the first right generation. Since the number of balls until the probability returns to each other changes within a predetermined range, it is difficult for the player to expect how much the number of balls to be earned will increase.
For this reason, there is a problem that the player is dissatisfied and turns away from the game, resulting in a disadvantage for the pachinko hall.
The present invention has been made in view of such a problem, and pachinko machines that can bring a profit to pachinko halls by eliminating the player's dissatisfaction and satisfying the original satisfaction of pachinko games. The purpose is to provide.

  In order to achieve the above object, a pachinko machine according to claim 1 of the present invention has a specific winning opening for setting a predetermined right to be generated or extinguished when a game ball passes, In a pachinko machine having a start opening for opening another winning opening according to a predetermined condition when the game ball passes in the generated state, at least one entrance for introducing the game ball is formed, A passage sensor for detecting the passage of the game ball is provided at the entrance, the specific prize opening and the start opening are provided at positions below the entrance, and the game balls entered from the entrance are connected to the specific prize opening and the start opening. Distributing means provided with guiding means for guiding and passing to either one, and a low probability mode and a high probability mode for instructing the probability at the time of the lottery based on detection of the passing of the game ball by the passing sensor Any one of A lottery means for performing a lottery using random numbers in the probability mode, and when the lottery means loses the lottery means, the guide means guides and passes the game ball from the entrance to the specific winning opening, and the lottery means And a control means for controlling the guiding means to guide and pass the game ball from the entrance to the starting opening when a lottery is performed.

According to this configuration, the player does not know when the high-probability and low-probability mode switching is performed, and the player loses or regenerates the right even when the right is generated, so that the player can see how many balls are played. Since it is difficult to predict whether or not it can be acquired, it is rich in unexpectedness, and the expectation for winning the ball increases.
The pachinko machine according to claim 2 of the present invention acquires a random number used for lottery in claim 1 when the probability mode for performing the lottery is a high probability mode at the time of the lottery by the lottery means. When the random number is a predetermined first specific value, the mode is shifted to the low probability mode. When the probability mode is the low probability mode, the acquired random number is a predetermined second specific value. It further features transition control means for performing control to transition to the high probability mode.
According to this configuration, the low-probability mode and the high-probability mode can be shifted to each other at the time of the lottery, so that it is not easy to hit a big hit in the low-probability mode, and it is possible to eliminate the dissatisfaction with the player .

  As described above, according to the present invention, there is an effect that it is possible to bring a profit to the pachinko hall by eliminating the dissatisfaction of the player and satisfying the original satisfaction of the pachinko game.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, parts corresponding to each other in all the drawings in this specification are denoted by the same reference numerals, and description of the overlapping parts will be omitted as appropriate.
(Embodiment)
FIG. 1 is a front view showing a configuration of a game board of a pachinko machine according to an embodiment of the present invention.
The pachinko machine shown in FIG. 1 is provided with a distribution device (distribution means) 12 which is a characteristic element of the present embodiment at a substantially central portion of the game board 11, and a numerical value above the distribution device 12. Further, a symbol display device 13 for variably displaying symbols by the character is arranged, and a special winning opening 14 is arranged below.

  The distribution device 12 has an opening (entrance) 12p into which a game ball enters at the top of a frame 12a having a circular front shape, a passage sensor 12b is provided around the opening 12p, and the frame 12a. Is provided with a specific winning opening 12c and a large winning opening opening start opening 12d at a diagonally lower left and right, and a rotating portion (guide means) that is rotatable clockwise / counterclockwise on the inner periphery of the frame 12a. 12e is provided. However, the specific winning opening 12c and the start opening 12d for opening the special winning opening have names and functions including not only winning openings but also passing gates.

Further, a recess 12f that holds a game ball is formed on the outer periphery of the rotating portion 12e. As shown in FIG. 2A, when the recess 12f is positioned at the uppermost position, a game is played from the entrance of the passage sensor 12b. When a ball enters, the game ball is held in the recess 12f.
As shown in FIG. 2B, when the rotating portion 12e rotates clockwise, the held ball passes through the specific winning opening 12c, and when it rotates counterclockwise as shown in FIG. The passed ball passes through the start opening 12d for opening the big prize opening.

In addition, as shown in FIG. 3, the distribution device 12 may be configured so that an electric tulip 12i is attached to the passage sensor 12b so that a game ball can easily enter. Reference numeral 13 denotes a nail. Furthermore, two or more inlets that are paired with the passage sensor 12b may be provided.
Further, as shown in FIG. 4, the pachinko machine includes a game control unit 16 for controlling the pachinko game. The game control unit 16 includes a passage sensor 12b, a start port sensor 12d1 for opening a big prize opening, The specific prize opening sensor 12c1, the big prize opening prize sensor 14a, the symbol display device 13, the big prize opening solenoid 14b, the stepping motor 12g of the sorting device, and the origin sensor 12h of the sorting device are connected. Yes.

In addition, the game control unit 16 includes a sensor detection state determination unit 21, a right determination unit 23, a lottery unit (lottery means) 25, a lottery result determination unit 27, a display control unit 29, and a big prize opening / closing control unit. 31, a rotation control unit (control unit) 33, and a probability mode transition control unit (transition control unit) 35.
These elements 21 to 35, the sensors 12 b, 12 d 1, 12 c 1, 14 a, 12 h, the symbol display device 13, the big prize opening solenoid 14 b, and the stepping motor 12 g are electrically connected in the game control unit 16. Has been.

Next, these components will be described.
The sensor detection state determination unit 21 determines the detection state of each sensor 12b, 12d1, 12c1, 14a, 12h.
The right determination unit 23 manages and determines the jackpot right generation state. When the passage of a game ball to the specific winning opening 12c is detected in the state where no right is generated, the right is generated. A right non-occurrence state is set when either the passage of a game ball to the specific winning opening 12c is detected in the right generation state or the right is digested for a specified right number of times (for example, 16 times). Based on this state management, it is determined whether the current right is generated or not (non-right).

The lottery unit 25 performs a lottery using random numbers in either the low probability mode or the high probability mode when the passage of the game ball is detected by the passage sensor 12b.
The lottery result determination unit 27 determines whether or not the lottery result in the lottery unit 25 is a hit.
The display control unit 29 controls the display of symbols on the symbol display device 13, and displays the symbols in a variable manner according to the lottery result determined by the lottery result determination unit 27, or displays the winning or losing symbols. Control is performed.

  The big winning opening opening / closing control unit 31 determines that the right determination unit 23 is generating a right when the winning winning opening opening start sensor 12d1 detects the winning of a game ball to the big winning opening opening start port 12d. If it is determined, the special winning opening 14 is opened until a predetermined time elapses or until a predetermined number of game balls are won. In addition, when the right is not being generated, the special winning opening 14 is not opened.

When the random number lottery is won, the rotation control unit 33 performs a control to rotate the rotating unit 12e of the sorting device 12 once counterclockwise by rotating the stepping motor 12g, and when the random number lottery is removed, 12e is controlled to rotate once clockwise.
Further, the rotation control unit 33 performs rotation control to correct the deviation when the origin sensor 12h is displaced in the state where the concave portion 12f of the rotation unit 12e is directly above.

  When the random number lottery is performed by the lottery unit 25, the probability mode transition control unit 35 acquires the random number at the time of the lottery and determines whether the probability at the time of the lottery is the low probability mode or the high probability mode. When the acquired random number is the specific value A (first specific value) in the case of the probability mode, the mode shifts to the low probability mode, and when the acquired random number is the specific value B (the second specific value) in the case of the low probability mode. Control to shift to the high probability mode is performed.

However, the specific values A and B can be set to a plurality of values in advance, or can be a range of values. Further, when a random number is acquired, for example, a random number generated by a hardware random number generator (not shown) is acquired.
The operation of the game ball distribution process to the specific winning opening 12c and the special winning opening releasing start opening 12d by the pachinko machine having such a configuration will be described with reference to the flowchart shown in FIG.

  First, it is assumed that the initial state is the low probability mode and the right is not generated. In step S1, the sensor detection state determination unit 21 determines whether or not the passage of the game ball is detected by the passage sensor 12b. As a result, if it is determined that the passage is detected, a random number lottery is performed in the lottery unit 25 in step S2, and a probability mode transition process using random numbers used in the previous random number lottery is performed in step S3. This is performed by the unit 35.

The probability mode transition processing by the probability mode transition control unit 35 will be described with reference to the flowchart of FIG.
In step S11, it is determined whether or not the probability at the time of random lottery is the high probability mode. As a result, in the case of the high probability mode, a lottery random number is acquired in step S12, and it is determined whether or not the acquired random number is the specific value A. In the case of the specific value A, in step S13, control for shifting to the low probability mode is performed, and the probability mode shifting process is ended. On the other hand, if it is determined in step S12 that the value is not the specific value A, the shift control is not performed, and the process ends in the high probability mode. At this time, since the probability of the specific A value, that is, the mode transition occurrence rate from the high probability to the low probability is set to 1/200 as an example in the present embodiment, it is rare to move to the low probability. is there.

  On the other hand, if it is determined in step S11 that the mode is not the high probability mode, that is, the mode is the low probability mode, a lottery random number is acquired in step S14, and it is determined whether or not the acquired random number is the specific value B. At this time, the probability of becoming a specific B value, that is, the mode transition occurrence rate from the low probability to the high probability is set to 1/300 as an example in the present embodiment, so it is rare to move with a high probability. is there.

In the case of the specific value B, in step S15, control for shifting to the high probability mode is performed, and the probability mode shifting process is ended. On the other hand, if it is determined in step S14 that the value is not the specific value B, the shift control is not performed, and the process ends in the low probability mode. In the process at this time, it is assumed that the process is finished in the low probability mode.
Thereafter, in step S4 of FIG. 5, the lottery result determination unit 27 determines whether or not the lottery result in step S2 is a hit. In this case, since the lottery is performed in the low-probability mode, in this embodiment, 9/10 is excluded as an example. In this case, the process proceeds to step S5. In this case, the display control unit 29 controls display of the symbol variation on the symbol display device 13, and then the display of the detachment symbol is performed.

In step S <b> 6, the rotation unit 12 e of the sorting device 12 is rotated once in the clockwise direction under the control of the rotation control unit 33. In the middle of this, the game ball held in the recess 12f wins the specific winning opening 12c. At this time, the right determination unit 23 determines that the right is being generated, and enters the right generation state.
Next, in step S1, the sensor detection state determination unit 21 determines that the passage has been detected. In step S2, the lottery unit 25 performs random number lottery. In step S3, probability mode transition processing is performed.

  Here, as described above, the low probability mode is maintained in most cases, but it is assumed that the low probability mode is also maintained this time. Thereafter, the lottery result is determined in step S4. Again, as described above, 9/10 is off. If it also deviates from here, the process proceeds to step S5 and step S6, and the game ball held in the specific winning opening 12c wins the specific winning opening 12c again. Here, since the right has already been generated in the distribution to the specific winning award 12c, the right is extinguished (right is not generated) in this distribution.

  As described above, the low probability state continues in the normal state, and the game process is such that the generation and extinction of rights are alternately repeated, and even if a right is generated, it is hardly possible to digest it. However, in the right generation state, in the above-described example, there is a case of winning in step S4 although the probability is 1/10. In this case, the distribution to the start opening 12d for opening the special winning opening is executed, and the special winning opening 14 is opened once. However, since the low-probability state is continued with a probability of 199/200, the determination at the next step S4 is also missed with a probability of 9/10, and the rights are extinguished. In other words, in the state where the low probability state continues, there are very few cases where the right can be digested fortunately after the right is generated, and it will disappear with most of the right part remaining. Of course, when the right is extinguished (right is not generated), a winning determination process is performed in step S4, and even if the distribution to the start opening 12d for the big prize opening is performed, the big prize opening 14 is opened. Not. Therefore, the occurrence of a large number of balls at a low probability is negligible.

Next, the case where the low-probability mode is shifted to the high-probability mode by the probability mode transition processing in step S3 will be described. However, step 1 to step 3 will be omitted.
When step 4 is executed in the high probability mode and the right is not generated, 9/10 is won as an example in the present embodiment, so that the winning process is executed. In other words, the distribution to the start port 12d for opening the big winning opening is performed, but since the right is not generated, the big winning opening 14 is not opened. In the same way in the next time as well, in most cases, the allocation to the start port 12d for opening the big prize opening is performed, so it is difficult to achieve the right digest state, that is, the open state of the big prize opening 14.

However, even in a high probability state, the present embodiment is configured so that it will be off with a probability of 1/10, so that the outage will eventually occur, and the allocation to the specific winning opening 12c will be performed. Here, the right generation state is finally reached.
Now, as described above, the case where a transition is made from a low probability to a high probability in a right non-occurrence state is shown. The process of waiting for detachment is omitted. Next, the process after the generation of rights will be described.

The high probability mode is continued with a probability of 199/200 every time after the generation of the right, as before the generation of the right. Therefore, if a lottery in the high probability mode is made in step 4, the winning is performed with a probability of 9/10, and distribution to the start port 12d for opening the big prize opening is performed. Since the right is being generated here, the condition for opening the big prize opening is satisfied. That is, one right is exercised.
The above process is repeated at step S4 with a probability of 1/10 or until the specified right number of times (for example, the number of times of opening of the big prize opening is executed) is satisfied, and the right is determined by either establishment. Disappear. The above process continues with a high probability until the specified number of rights are exercised, and a large amount of money is obtained. Thereafter, the high probability mode continues, and the process of re-right generation and right digestion continues while staying in the high probability mode.

  As you can see from the above explanation, once you are in the high probability mode, you can expect a lot of balls, but how long the high probability mode will continue and the generation of rights and the cycle of digestion can be rotated without any loss. Kaga will determine the number of balls that can be obtained in one high probability mode stay period. The chances of appearing are very wide, ranging from zero to an endless level, depending on your luck. For this reason, when the player enters the high probability mode, the player is placed between the endless possibility and the reality, and is in an uninteresting state.

Now, the lottery in the high probability mode will be described in more detail. For example, it is assumed that the lottery result determination unit 27 in step S4 determines that the lottery is a win. In the case of winning, in step S7, after the symbol variation is displayed on the symbol display device 13 under the control of the display control unit 29, the winning symbol is displayed.
In step S8, the rotation unit 12e of the distribution device 12 is rotated once counterclockwise by the control of the rotation control unit 33. In the middle of this, the game ball held in the recess 12f is opened to the big winning opening opening start port. Win 12d. In this prize, when the right is being generated, the big prize opening 14 is opened by the big prize opening / closing control unit 31.

  That is, in step S21 shown in FIG. 7, the sensor detection state determination unit 21 determines that a winning detection has been detected by the big winning opening opening start port 12d1 by the big winning opening opening start port sensor 12d1. At this time, in the determination by the right determination unit 23 in step S22, it is determined that the right is being generated. Therefore, in step S23, the large winning opening 14 opening process by the large winning opening / closing control unit 31 is executed. This is, for example, in the open state until the big winning opening 14 is opened for 10 seconds or ten game balls are won in the big winning opening 14.

  In the right generation state, when the allocation to the winning opening opening start port 12d is performed, that is, when the right digestion occurs intermittently, the time obtained by adding the variation time of the open symbol and the rotation time of the rotating unit 12e Is appropriately determined for the opening time of the one big winning opening 14. That is, it is better that the rights are digested smoothly in a state where the rights have been continuously disseminated, but if the next prize is exercised even though the big prize opening 14 is open. It's totally useless, so you can't be too early. On the other hand, if it is too long, the launch ball until the next right digestion becomes a waste ball and becomes inefficient. Therefore, it is desirable to set the time obtained by adding the symbol variation time and the rotation time of the rotating portion 12e to be slightly longer than the opening time of the one big winning opening 14.

The big winning opening winning process in steps S21 to S23 during the generation of the right is normally executed until most of the right is consumed. For example, 16 rounds (one big winning opening is called one round) are executed.
However, if the lottery result in steps S2 to S4 is rarely lost during the round digestion and the distribution to the specific winning award is performed, the right is extinguished at that time.

  According to such a pachinko machine of this embodiment, at least one entrance for introducing a game ball is formed, and a passage sensor 12b for detecting the passage of the game ball is provided at the entrance, and at a position below the entrance, A special winning opening 12c is set in advance for setting the right of winning a jackpot when the game ball is won, and when the game ball is won when the right is generated. A special winning opening opening start opening 12d is provided for opening according to the conditions, and the game ball entered from the inlet is held by the recess 12f, and the specific winning opening 12c and the special winning opening opening start opening 12d are provided. The allocating device 12 provided with a rotating portion 12e that guides and wins while rotating to either one is disposed at a substantially central portion of the game board 11.

  When the passing sensor 12b detects the passing of the game ball, the lottery unit 25 performs a lottery using a random number in either the low probability mode or the high probability mode. When it is removed during the generation, the rotation control unit 33 rotates the rotation unit 12e of the sorting device 12 in the clockwise direction so that the game ball in the recess 12f wins the specific winning opening 12c. Further, when a lottery is won while the right is being generated, the rotating portion 12e is rotated counterclockwise so that the game ball is awarded to the start opening 12d for opening the big winning opening.

As a result, balls entered from at least one entrance can be distributed so that they are almost awarded to a specific prize opening during the low probability mode, and are awarded to other start openings for opening the prize opening during the high probability mode. , The generation, extinction, and digestion of rights are all united, and it is possible to realize an entertaining game.
Further, the random number used for the lottery is acquired by the probability mode transition control unit 35 when the lottery mode is selected by the lottery unit 25 and the probability mode for performing the lottery is the high probability mode. Only in the case of A, the mode is shifted to the low probability mode, and in the case of the low probability mode, the mode is shifted to the high probability mode only when the acquired random number is a predetermined specific value B.

As a result, since the low probability mode and the high probability mode can be shifted to each other at the time of the lottery, it is possible to eliminate the stagnation only in the low probability mode, and it is not a big hit and the player is dissatisfied. it can.
Therefore, the dissatisfaction of the player can be eliminated, thereby satisfying the original satisfaction of the player's pachinko game and benefiting the pachinko hall.

  In addition, although it is defined as the third type in the above, it is only for explanation and is not limited to the third type in the gaming machine rules. If a prize is entered into a special prize opening (right win state) and any other prize opening (such as a big prize opening) is opened when a winning entry is detected in the right occurrence state, all Applicable. Furthermore, the specific winning opening and the starting opening are not limited to winning openings, and may be passing gates. In other words, anything can be used as long as the passage after the distribution can be detected.

It is a front view which shows the structure of the game board of the pachinko machine which concerns on embodiment of this invention. It is a figure for demonstrating operation | movement of the distribution apparatus of the pachinko machine which concerns on the said embodiment, (a) shows the state by which the game ball which entered from the entrance of the passage sensor is hold | maintained at a recessed part, (b) (C) is a figure which shows the state in which the game ball currently hold | maintained at the recessed part wins a specific winning opening, and (c) shows the state which the game ball hold | maintained at a recessed part wins to the start opening for big winning opening. It is a figure which shows the structure which provided the electric tulip in the entrance of the passage sensor of the said distribution apparatus. It is a block diagram which shows the component for the game control of the pachinko machine which concerns on the said embodiment. It is a flowchart for demonstrating operation | movement of the distribution process of the game ball by the pachinko machine based on the said embodiment. It is a flowchart for demonstrating operation | movement of the probability mode transfer process by the pachinko machine which concerns on the said embodiment. It is a flowchart for demonstrating operation | movement of the winning process to the big winning opening by the pachinko machine based on the said embodiment. It is a front view for demonstrating the conventional pachinko machine. It is a perspective view for demonstrating the other conventional pachinko machine.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Game board 12 Sorting device 12a Frame body 12b Passing sensor 12c Specific winning opening 12c1 Specific winning opening sensor 12d Opening opening for opening 12 Motor 12h Origin sensor of sorting device 12i Electric tulip 13 Symbol display device 14 Grand prize opening 14a Grand prize opening prize sensor 14b Grand prize opening solenoid 16 Game control section 21 Sensor detection state judgment section 23 Rights judgment section 25 Lottery section 27 Lottery result Judgment part 29 Display control part 31 Grand prize opening / closing control part 33 Rotation control part 35 Stochastic mode transition control part

Claims (2)

When a game ball passes, a specific prize opening for setting a predetermined right to be generated or extinguished and another prize opening when a game ball passes in a state where the right is generated are predetermined. In a pachinko machine having a starting port for opening according to the conditions,
At least one entrance for introducing a game ball is formed, a passage sensor for detecting the passage of the game ball is provided at the entrance, the specific winning opening and the start port are provided at a position below the entrance, and the entrance is entered from the entrance. Distribution means provided with guiding means for guiding and passing the game ball to either one of the specific winning opening and the starting opening;
Lottery means for performing lottery using random numbers in either one of the low probability mode and the high probability mode instructing the probability at the time of the lottery based on the passage of the game ball detected by the passage sensor;
When the lottery means loses the lottery means, the guidance means guides and passes the game ball from the entrance to the specific winning opening, and when the lottery means wins, the guidance means causes the game from the entrance to pass. A pachinko machine comprising control means for controlling the ball to pass through the start opening. At the time of the lottery by the lottery means, if the probability mode for performing the lottery is the high probability mode, a random number used for the lottery is acquired, and if the acquired random number is a predetermined first specific value, the low probability mode And transition control means for performing control to shift to the high probability mode when the acquired random number is a predetermined second specific value when the probability mode is the low probability mode. The pachinko machine according to claim 1, wherein the machine is a pachinko machine.

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