JP2010187727A - Pachinko machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a Pachinko machine capable of enhancing the amusement. <P>SOLUTION: The Pachinko machine has a regular mode in which the winning probability in a winning lottery is high while the opening probability for winning an opening lottery is low, a chance mode in which the winning probability and the opening probability are both low, and a successive jackpot mode in which the opening probability is high. If a jackpot is made in the successive jackpot mode, the mode is shifted to the successive jackpot mode again, and therefore, the successive jackpot mode is the most advantageous mode to players. If the winning lottery is won in the regular mode, the mode is shifted to the successive jackpot mode at the probability of 20%. If the winning lottery is won in the chance mode, the mode is shifted to the successive jackpot mode at the probability of 80%. The regular mode has such an advantage that the wining probability is high, and the chance mode has such an advantage that the probability of shifting to the successive jackpot mode is high, In this way, the play before making a jackpot does not become monotonous. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a pachinko machine used in a game hall such as a pachinko parlor.

  In the pachinko machine, a winning lottery is performed when a game ball flowing down the game area wins the start winning opening, and when the winning lottery is won, the mode is shifted to a winning mode. In the winning mode, the attacker can open and close to allow a game ball to be awarded to the grand prize opening, and a large number of prize balls can be obtained by winning the game ball to the big prize opening.

  In addition, some pachinko machines have a low probability and a high probability as the winning probability of the winning lottery, and there are some pachinko machines that switch the winning probability according to the type of the winning winning in the winning lottery. However, when the winning probability is switched when winning in the winning lottery, there is a problem that the game becomes monotonous until winning in the winning lottery.

  For this reason, in Patent Document 1 below, when a game ball wins a winning winning opening with a high probability of winning a winning lottery, a lottery is performed separately from the winning lottery, and according to the lottery result. An example of reducing the hit probability to a low probability is described. By doing so, it is possible to give a sense of tension to the game until winning in the winning lottery.

Registered Utility Model No. 3118008

  However, in the apparatus described in Patent Document 1, the state in which the winning probability of the winning lottery is set to a low probability has only a demerit that the winning probability is lower than the state in which the winning probability is set. There was a problem that the interest of the player was lowered by lowering the hit probability.

  The present invention has been made in view of the above background, and an object of the present invention is to provide a pachinko machine that can give a sense of tension to a game until winning a winning lottery without reducing the interest of the player. It is said.

  In order to achieve the above object, the pachinko machine according to the present invention is closed in the normal mode when a winning ball is drawn when a game ball flowing down the game area wins a winning winning opening. In addition to the transition to the winning mode for opening the big winning opening, and a winning lottery executed when the game ball passes through a predetermined area set in the gaming area, a winning is made at the starting winning opening. In a pachinko machine that opens and closes an opening / closing member so as to be easily obtained, a lottery is performed when the winning lottery is won, and the winning probability of the winning lottery is either high or low depending on the lottery result The first probability changing means for switching to the game, and a lottery is performed on condition that the winning probability of the winning lottery is set to a high probability when a game ball wins the start winning opening, and the lottery The second probability changing means for switching the winning probability of the winning lottery to a low probability according to the result, and the winning probability of the open lottery is set to a low probability when winning in the winning lottery And a third probability changing means for performing a lottery and switching the winning probability of the open lottery to a high probability according to a result of the lottery, wherein the third probability changing means sets the winning probability of the winning lottery to a high probability. Decide whether or not to switch the winning probability of the open lottery to a high probability so that the probability of switching the open lottery winning probability to a high probability is higher when it is set to a lower probability than when It is characterized by doing.

  Probability that the first probability changing means sets the probability that the winning probability of the winning lottery is set higher than the probability that the winning probability of the winning lottery is set low, and the second probability changing means sets the winning probability of the winning lottery to be low Is set to be higher than the probability of winning in the winning lottery performed with a high probability, and the winning probability of the winning lottery is set to be approximately equal between the low probability and the high probability.

  Further, the third probability changing means, when the winning probability in the open lottery is not switched to a high probability until a predetermined period elapses until the winning in the winning lottery, The winning lottery win probability is switched to a low probability, and if the winning lottery is won during the predetermined period, the winning probability of the open lottery is again until the predetermined period elapses after the winning mode ends. It is preferable to maintain a high probability.

  Further, the first winning prize opening having the same probability of winning a game ball regardless of the opening / closing operation of the opening / closing member and the probability of winning of the gaming ball being increased by the opening / closing operation of the opening / closing member. It consists of a start winning opening, and as the winning mode, a normal winning mode and a special winning mode that is more advantageous to the player than the normal winning mode are set, and a lottery is performed when the winning lottery is won In accordance with the lottery result, there is provided mode control means for shifting to either the normal mode or the special winning mode, and the mode control means responds to the fact that the game ball has won the first start winning opening. The winning lottery executed in response to the winning of the game ball to the second starting winning opening is more than the winning case in the winning lottery executed in As it is the probability of shifting increases the to a special per mode if it is preferable to determine the type of per-mode shifting.

  According to the present invention, if the winning lottery is lost in a state where the winning probability of the winning lottery is set to a high probability, the winning probability may be lowered. For this reason, it is possible to give a sense of tension to the game until winning in the winning lottery. Further, since the winning probability may be lowered without winning in the winning lottery (without going through the winning mode), the player cannot accurately grasp the winning probability of the current winning lottery. For this reason, it is possible to give the player a sense of expectation with respect to the winning probability of the current winning lottery.

  In addition, according to the present invention, when an open lottery executed when a game ball passes through a predetermined area in the game area, the opening / closing member is opened and closed so that a winning can be easily obtained at the start winning opening. In addition, the probability that the winning probability of the open lottery is raised is higher when the winning probability of the winning lottery is set to be lower than when the winning probability is set to be higher. Thus, there is a merit that even if the winning probability of the winning lottery is set to a low probability, the probability that the winning probability of the open lottery is raised is high. For this reason, even if the winning probability of the winning lottery is set to a low probability, the player's interest is not reduced.

  Furthermore, the probability that the winning probability of the winning lottery is set to a high probability is set higher than the probability that the winning probability is set to a low probability, and the probability of setting the winning probability of the winning lottery is set to a low probability. If the winning probability is set to be substantially equal between the low probability and the high probability, the above-described effect can be made more prominent. That is, when winning in the winning lottery, there is a high probability that the winning probability per winning lottery is set to a high probability, but at the same time, there is also a high probability that the winning probability of winning the winning lottery will be reduced before winning in the winning lottery. You can play games with a sense of tension. Further, by reducing the difference between the case where the winning probability of the winning lottery is low and the case where the winning probability is high, the merit when the winning probability of the winning lottery is set to a low probability (open lottery The probability that the winning probability is raised to a high probability is high), and the expectation that the winning probability of the winning lottery will be lowered to a low probability can be increased.

  In addition, when the winning lottery chance has been switched to a high probability and the winning lottery has not been won within the predetermined period, the winning probability of the open lottery is reduced and the winning lottery is won within the predetermined period. If the winning probability of the open lottery is increased and maintained until the predetermined period elapses after the winning mode ends, this state is likely to be repeated when the winning probability of the open lottery is increased. Therefore, it is more advantageous for the player to increase the winning probability of the open lottery. For this reason, a sense of expectation that the winning probability of the winning lottery can be lowered can be further increased.

  In addition, there is provided a first start winning opening having the same game ball winning probability regardless of the opening / closing operation of the opening / closing member, and a second starting winning opening having a gaming ball winning probability increased by opening / closing operation of the opening / closing member, When winning in the winning lottery executed when the game ball wins the second starting winning hole than when winning in the winning lottery executed when the game ball wins the first starting winning opening However, if the probability of shifting to a win mode that is advantageous to the advantage is increased, it is more advantageous for the player that the win probability of the open lottery is raised to a high probability. For this reason, a sense of expectation that the winning probability of the winning lottery can be lowered can be further increased.

It is a front view of a pachinko machine. It is a block diagram which shows the outline of an electrical structure of a pachinko machine. It is a flowchart which shows the flow of a game. It is explanatory drawing which shows the flow of a game.

  As shown in FIG. 1, the pachinko machine 10 is provided with a game board 12. A game area 16 surrounded by a substantially circular guide rail 14 is formed on the surface of the game board 12. A game ball is launched into the game area 16 in accordance with the operation of the launch handle 18.

  The game area 16 is provided with a first start winning opening 20 and a second starting winning opening 22. The first start winning port 20 and the second start winning port are arranged side by side, and the second start winning port 22 is disposed below the first start winning port 20. When a game ball wins the first start winning opening 20 or the second start winning opening 22, a predetermined number of game balls are paid out to the receiving tray 24 as winning balls, and a winning lottery is executed to win or lose. Is determined.

  When the winning lottery is executed, the symbol variation display is started on the liquid crystal display 26, and the result of the winning lottery is notified by the combination of symbols stopped and displayed after the symbol variation display. When the winning lottery is won, the mode is shifted to the winning mode. In the winning mode, the big winning opening 30 is opened, and it becomes possible to make a game ball win the big winning opening 30. The large winning opening 30 is set such that the number of winning balls to be paid out when a game ball wins is larger than that of the first starting winning opening 20 and the second starting winning opening 22, and a large number of winning balls are obtained in the winning mode. be able to.

  The game area 16 is provided with an opening / closing member 32. The opening / closing member 32 is composed of a pair of left and right, and is disposed so as to face each other with the entrance of the second start winning prize port 22 interposed therebetween. The opening / closing member 32 is pivotally supported by a shaft extending in the front-rear direction, and is provided so as to be openable and closable between an open position in which the distal ends are moved away from each other and a closed position in which the distal ends are moved closer to each other. ing. When the opening / closing member 32 is moved to the open position, the game ball flowing down in the vicinity of the second start winning opening 22 is guided to the second starting winning opening 22. Further, when the opening / closing member 32 is moved to the closed position, the first start winning opening 20 is disposed between the front end portions of the opening / closing member 32, and it becomes impossible to win the game ball to the second starting winning opening 22. The opening / closing member 32 is normally held in a closed position, and is opened / closed in a predetermined manner when the game ball hits in an open lottery executed when the game ball passes through the through chucker 34 (for example, opens for 2 seconds). Moved to position).

  The pachinko machine 10 is provided with a high-accuracy state with a high probability of winning in a winning lottery (winning probability) and a low-accuracy state with a low winning probability, and a high probability of winning in an open lottery (opening probability). A high open rate state and a low open rate state with a low open probability are provided. The pachinko machine 10 is set to the normal mode in which the high-accuracy state and the low opening rate state are combined, the chance mode in which the low-accuracy state and the low opening state are combined, and the high opening rate state (high-accuracy state). The game is played in the extended game mode (which may be combined with any of the low-probability states) and the hit mode described above (see FIG. 4).

  In addition, the pachinko machine 10 includes a normal hit mode and a special hit mode as the hit mode, and when a win is made in the win lottery, the mode is shifted to one of these win modes. The normal hit mode ends when a predetermined number of game balls have won the big winning opening 30 or a round that ends when a predetermined time elapses is repeated five times. Further, the special hit mode ends when the above-described round is repeated 15 times.

  As shown in FIG. 2, a control unit 50 is provided inside the pachinko machine 10. The control unit 50 includes a memory 52, a winning lottery unit 54, a winning probability changing unit (first probability changing unit, second probability changing unit) 56, an opening lottery unit 58, an opening probability changing unit (third probability changing unit) 60. The hit mode control unit (mode control means) 62 is connected. A control program, control data, and the like are stored in the memory 52, and the control unit 50 performs overall drive control of each unit of the pachinko machine 10 based on information stored in the memory 52.

  The winning lottery unit 54 performs a winning lottery when a game ball has won the first start winning opening 20 or the second starting winning opening 22, and determines a win or a loss. The winning lottery unit 54 is used in a high-accuracy state and is used in a high-accuracy table 64 in which the winning probability is set to “1/100” and a low-probability state, and the winning probability is set to “1/101”. The low probability table 66 is stored, and the winning lottery unit 54 performs a winning lottery using any of these.

  The winning probability changing unit 56 performs a state determination lottery when a winning is made by the winning lottery, determines whether to be in a high-accuracy state or a low-accuracy state, and the winning mode shifted by this winning is completed. Then, the state is shifted to the determined state. In the hit probability changing unit 56, the probability that is determined when the state determination lottery is shifted to the high-accuracy state is "9/10" (the probability that is determined when the state is shifted to the low-accuracy state is "1/10"). The set state determination table 68 is stored, and the hit probability changing unit 56 performs state determination lottery using the state determination table 68.

  In addition, the winning probability changing unit 56 wins a lottery when a game ball wins the first start winning opening 20 or the second starting winning opening 22 in the normal mode (high accuracy / low opening rate state). First, a relegation lottery is performed to determine whether or not to shift to a chance mode (low probability / low open rate state) (demotion), and if it is determined to be demoted, shift to a chance mode. The winning probability changing unit 56 stores a demoting table 70 in which the probability determined to be demoted in the relegation lottery is set to “1/80”. The winning probability changing unit 56 stores the demoting table 70 Use the relegation lottery.

  The open lottery unit 58 performs an open lottery when the game ball passes through the through chucker 34 and determines a win or a loss. The open lottery unit 58 stores a high open rate table 72 used in a high open rate state and a low open rate table 74 used in a low open rate state. The high open rate table 72 is a lower open rate table. The opening probability is set higher than 74. And the open lottery part 58 performs open lottery using either of these.

  The opening probability changing unit 60 performs an opening rate determination lottery when winning in the winning lottery, determines whether to be in a high opening rate state or a low opening rate state, and the winning mode to be shifted by this winning is After the completion, shift to the determined state. In the opening probability changing unit 60, the probability of determining to shift to the high opening rate state in the opening rate determination lottery is the normal table 76 set to “1/5”, the chance table set to “4/5” 78, the extended resort table 80 set to “1/1” is stored.

  Then, the opening probability changing unit 60 performs an opening rate determination lottery using the normal table 76 when the winning lottery is won in the normal mode (high accuracy / low opening rate state). In addition, when the winning mode is a winning lottery in the chance mode (low probability / low opening rate state), an opening rate determining lottery is performed using the chance table 78. Further, when winning in the consecutive house mode (highly accurate / high opening rate state or low probability / high opening rate state), the open rate determining lottery is performed using the consecutive house table 80.

  In addition, the opening probability changing unit 60 may win a winning lottery even after a preset high opening rate period has elapsed (for example, even if the winning lottery is performed 100 times) after the transition to the consecutive resort mode. If not, the open lottery unit 58 is shifted to a low open rate state (normal mode or chance mode). At this time, when the extended villa mode is a combination of the high-accuracy state and the high open rate state, the continuous villa mode is shifted to the normal mode. Moreover, when the extended villa mode is a combination of the low probability state and the high open rate state, the continuous villa mode is shifted to the chance mode.

  The winning mode control unit 62 performs a mode determination lottery when winning in the winning lottery, determines whether the normal winning mode or the special winning mode is selected, and shifts to the determined winning mode. The winning mode control unit 62 stores a normal winning table 82 and a special winning table 84 used in the mode determination lottery, and the special table 84 has a special winning mode in the mode determining lottery rather than the normal winning table 82. The probability of being determined is set high.

  Then, the winning mode control unit 62 wins the winning lottery executed in accordance with the winning to the first start winning opening 20 and the winning lottery executed in the normal mode or the chance mode. In such a case, the mode determination lottery is performed using the normal hit table 82. In addition, when the winning mode control unit 62 wins the winning lottery executed in accordance with the winning to the second start winning opening 22, and the winning mode lottery executed in the consecutive resort mode The mode determination lottery is performed using the special table 84.

  Hereinafter, the flow of the game in the pachinko machine 10 will be described with reference to FIGS. As shown in FIG. 3, in the pachinko machine 10, the first operation is performed during the chance mode (low accuracy / low opening rate state) or the extended play mode (high accuracy / high opening rate state, or low accuracy / high opening rate state). When a game ball wins the starting winning port 20 or the second starting winning port 22, a winning lottery is performed. Further, in the pachinko machine 10, if a game ball wins the first start winning opening 20 or the second starting winning opening 22 in the normal mode (high accuracy / low opening rate state), the winning lottery is performed after the relegation lottery is performed. Done. In the relegation lottery, the chance mode (low probability / low open rate state) is entered with a probability of “1/80”.

  When the winning lottery is won, the winning mode determination lottery is performed to determine whether to shift to the normal winning mode or the special winning mode. And it transfers to the determined hit mode. In the winning mode determination lottery, the special winning mode is set when the winning is made with the winning at the second starting winning port 22 rather than the winning with the winning at the first starting winning port 20. The probability of transition is high.

  In addition, when winning in the winning lottery, a state determination lottery and an open rate determination lottery are performed, whether to be a high probability state or a low probability state, and whether to be a high open rate state or a low open rate state Is determined. Then, after the winning mode ends, the mode is shifted to any one of the normal mode, the chance mode, and the extended play mode based on the result of the state determination lottery and the opening rate determination lottery.

  As shown in FIG. 4, in the normal mode, as described above, the mode is shifted to the chance mode with a probability of “1/80” by the relegation lottery performed prior to the winning lottery. Further, in the normal mode, when winning in the winning lottery, the mode is switched again to the normal mode with a probability of 70%, to the chance mode with a probability of 10%, and to the extended mode with a probability of 20%. Note that, in the normal mode, the probability of shifting to the normal winning mode when the winning in the winning lottery is higher than that in the consecutive resort mode.

  In the chance mode, when winning in the winning lottery, the mode is switched again to the chance mode with a probability of 10%, similarly to the normal mode with a probability of 10%, and to the extended mode with a probability of 80%. The chance mode, like the normal mode, has a higher probability of shifting to the normal winning mode when the winning lottery is won as compared to the extended play mode. Further, in the pachinko machine 10, when the power is turned on and when the setting is reset due to an error or a setting change, the mode is shifted to the chance mode, and the game is started from the chance mode.

  In the consecutive house mode, if the winning is a lottery, the chance mode is entered again with a probability of 100%. There are cases in the consecutive home mode where there is a low probability state and a high probability state, which is determined based on a state determination lottery. Also, in the Renso mode, when the high open rate period has passed since the transition, if the winning lottery does not win, the normal mode is selected in the high accuracy state, and the chance is in the low accuracy state. The mode is changed (see FIG. 3). In the consecutive house mode, the probability of shifting to the special winning mode when the winning is in the winning lottery is higher than in the normal mode or the chance mode.

  In this way, the Renso mode is in a high open rate state, and it is easy to win a game ball in the second start winning opening 22, and it is easy to win a special win when winning in the win lottery, and further wins in the win lottery. Since the extended game mode is repeated again, it is advantageous for the player compared to the normal mode and the chance mode.

  On the other hand, comparing the normal mode with the chance mode, there is a merit that the probability of winning in the lottery is high in the normal mode, but there is a demerit that the probability of shifting to the villa mode is low. While there is a demerit that the probability of winning in the lottery is low, there is a merit that there is a high probability of shifting to the consecutive resort mode. For this reason, in the normal mode, it can be expected that the winning lottery will be won, and in the chance mode, it can be expected to shift to the consecutive resort mode.

  The present invention is not limited to the above embodiment. For example, the detailed configuration such as the lottery probability at the time of various lotteries can be changed as appropriate. For example, in the above-described embodiment, the hit probability of the high-accuracy state is “1/100” and the hit probability of the low-accuracy state is “1/101”, but the hit probability of each state is limited to this. It can be changed as appropriate. However, it is preferable that the difference between the two is small. By doing so, the merit (the merit of shifting from the normal mode to the chance mode) when the hit probability is lowered is increased, and the expectation that the hit probability is lowered can be increased.

  In the above-described embodiment, the probability that the high-accuracy state is determined in the state determination lottery is “9/10” (the probability that the low-accuracy state is determined is “1/10”). This probability can be changed as appropriate. However, it is preferable to set the probability that the high-accuracy state is determined to be higher than the probability that the low-accuracy state is determined. By doing so, it is possible to lengthen the period of playing the game while expecting the winning probability to be lowered, and it is possible to excite more.

  Furthermore, although the above embodiment has been described with an example in which the probability of being demoted in the relegation lottery (shifting to the low probability state) is “1/80”, this probability can be changed as appropriate. However, it is preferable to set the probability of demotion in the relegation lottery higher than the probability of winning in the high probability state. By doing so, the probability of demoting before making a win in the high-accuracy state and shifting to the low-probability state is increased, and the expectation that the win probability is lowered can be further increased.

  In the above embodiment, the example of determining the type of winning mode by mode determination lottery has been described. However, the type of winning mode may be determined based on the result of winning lottery. In this case, as the types of winning lotteries, there will be provided a special winning unit that shifts to the special winning mode when winning, and a normal winning unit that shifts to the normal winning mode when winning. What is necessary is just to determine the kind of hit mode according to whether it became.

  Similarly, as the types of winning lotteries, there are a winning with probability change that makes a high probability state when winning, and a non-probable winning method that makes a low probability state when winning, Based on (depending on which win), it may be determined whether to be in a high-accuracy state or a low-accuracy state.

  In addition, as a type of winning lottery lost, there will be a downgrade lost to shift from the high probability state to the low probability state when lost, and the result of the winning lottery performed in the normal mode (whether or not it was downgraded ), It may be determined whether or not to demote (whether or not to shift from the normal mode to the chance mode).

  Moreover, in the said embodiment, it is a case where it wins by the winning lottery performed according to the winning to the 1st start winning opening, and a case where it wins by the winning lottery executed in the normal mode or the chance mode The example in which the probability of shifting to the special hit mode is the same (example in which the win mode determination lottery is performed using the common lottery table (the normal hit table) in the former case and the latter case) is described. It is not limited to. Transition to the special mode for the former and the latter by performing a lottery mode determination lottery using a lottery table with different probabilities of being determined to shift to the special hit mode in the former case and the latter case You may vary the probability of doing.

  Similarly, when the winning lottery executed according to the winning at the second start winning opening is won and when the winning lottery executed in the consecutive resort mode is won, the special winning mode is shifted. Then, by performing the winning mode determination lottery using the lottery tables having different determined probabilities, the probability of shifting to the special mode may be made different between the former case and the latter case.

  In the above-described embodiment, the example in which the variation time of one symbol is the same in the high open rate state and the low open rate state has been described, but the present invention is not limited to this. In general, in a pachinko machine, if the game ball wins the starting winning opening before the symbol change display ends (before the result of the winning lottery is notified), the game ball is held as a holding ball and is currently held. After the change display, the reserved ball is digested and a new change display is started. However, in the state where the number of reserved balls reaches the upper limit, even if a game ball wins the starting prize opening, it will not be possible to receive a winning lottery, so the player interrupts the game and the operating rate decreases. In particular, such a problem becomes conspicuous in a high open state where a winning to the start winning opening frequently occurs. For this reason, the symbol variation time in the high open rate state may be shorter than the symbol variation time in the low open rate state. By doing so, the aforementioned problems can be prevented.

DESCRIPTION OF SYMBOLS 10 Pachinko machine 16 Game area 20 1st start winning opening 22 2nd starting winning opening 28 Attacker 30 Large winning opening 32 Opening and closing member 34 Through chucker 50 Control part 54 Winning lottery part 56 Hit probability changing part (1st probability changing means, 1st 2 probability change means)
58 Opening lottery part 60 Opening probability changing part (third probability changing means)
62 Hit mode control unit (mode control means)

Claims (4)

When a game ball flowing down the game area wins the winning lottery performed when winning the starting winning opening, the game mode shifts to a winning mode in which the large winning opening that is closed in the normal mode is opened, and the game In a pachinko machine that opens and closes an opening / closing member so that a winning can be easily obtained at a start winning opening when a winning ball is won when a game ball passes through a predetermined area set in the area ,
A first probability changing means for performing a lottery when winning in the winning lottery, and switching the winning probability of the winning lottery to either high probability or low probability according to the lottery result;
A lottery is performed on the condition that the winning probability of the winning lottery is set at a high probability when a game ball wins the starting winning opening, and the winning probability of the winning lottery is reduced according to the lottery result. A second probability changing means for switching;
When the winning lottery is won, the lottery is performed on condition that the winning probability of the open lottery is set to a low probability, and the winning probability of the open lottery is switched to a high probability according to the lottery result. 3 probability changing means,
The third probability changing means is more likely to switch the winning probability of the open lottery to a higher probability when the winning probability of the winning lottery is set to a lower probability than when the winning probability is set to a higher probability. Thus, it is determined whether or not to switch the winning probability of the open lottery to a high probability. The first probability changing means increases the probability of setting a higher probability than the probability of setting the winning probability of the lottery to a low probability,
The probability that the second probability changing means sets the winning probability of winning lottery to a low probability is higher than the probability of winning in winning lottery performed with high probability,
The pachinko machine according to claim 1, wherein the winning probability of the winning lottery is set to be substantially equal between a low probability and a high probability.   The third probability changing means, when the winning lottery is not obtained in the winning lottery during a predetermined period after the winning lottery is switched to a high probability, If the winning lottery is switched to a low probability and the winning lottery is won during the predetermined period, the winning probability of the open lottery is high until the predetermined period elapses after the winning mode ends. The pachinko machine according to claim 2, wherein the pachinko machine is maintained. A first start winning opening in which the probability that a game ball wins is the same regardless of the opening / closing operation of the opening / closing member and a second start winning in which the probability of winning a game ball is increased by the opening / closing operation of the opening / closing member. Composed of mouth and
As the hit mode, set a normal hit mode and a special hit mode that is more advantageous to the player than the normal hit mode,
A lottery is performed when winning in the winning lottery, and a mode control means is provided to shift to either the normal mode or the special winning mode according to the lottery result,
The mode control means that the game ball has won a prize at the second start prize port than when the winning ball is won in the winning lottery executed in response to the game ball having won the first start prize hole. 2. The type of winning mode to be transferred is determined so that the probability of shifting to the special winning mode is higher in the case of winning in the winning lottery executed in response to. ~ Pachinko machine according to any one of 3

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