JP2001327679A - Game machine, proability varying method and information recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a game machine, probability fluctuating method and information recording medium allowing the transfer to a probability variable state by a method different from in the past. SOLUTION: A central control part 14 generates a figure from 0 to 9 by random numbers when a pachinko ball passes a digital start chucker 21, rotates a first LED indicator 22 for a prescribed time, and displays the figure. When it is a prescribed number (e.g. 3 or 7), this sub-routine is read. The central control part 14 opens a tulip 20a only for a prescribed time in step S200 and judges whether the pachinko ball gets in a special prize port or not in step S201. The central control part 14 varies a second LED indicator 23 in step S203 to start a second variable game, judges the alignment of the same figures or not in step S204, and increases a big hit probability in step S205 in the alignment to end the control.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gaming machine and a probability changing method, and more particularly, to start a variable display game in which symbols such as figures and pictures are changed by winning a regular winning opening, and A gaming machine that shifts to a big hit state when a predetermined number of games are collected.

[0002] The present invention also relates to an information storage medium storing a program for causing a gaming machine to execute a jackpot probability variation processing procedure, comprising a semiconductor memory, an LD (laser disk (registered trademark)), an HD (hard disk), and an FD. The present invention relates to an information storage medium including a disk-shaped memory such as a (floppy (registered trademark) disk), an MD (mini-disk), a CD (compact disk), a DVD (digital video disk), or a tape-shaped memory such as a magnetic tape.

[0003]

2. Description of the Related Art In conventional gaming machines such as pachinko machines, slot machines, and video games, numbers, symbols, patterns, or pictures are displayed on a variable indicator such as a drum or a display arranged substantially at the center of the gaming board. Variably display various symbols such as, for example, three identical numbers “1, 1,
A case where the same symbol (ordinary symbol) is stopped together, such as 1 ", is regarded as a normal jackpot.

[0004] When the big hit occurs, the gaming machine changes to an advantageous state for the player. For example, in the case of a pachinko machine, a large winning opening is opened to make it easier for game balls to win, and in the case of a slot machine, the right to refund ten or more coins or to perform a predetermined bonus game. Is given to the player, so that game coins are easily put out. Also, Lucky Seven "7,
As shown in FIG. 7, 7 ", when the special symbols are stopped together, the big hit state is set as a more favorable condition, and after the big hit game ends, the probability that the symbols are easily aligned with a higher probability than usual is changed. Give bonus games.

In particular, in the case of a pachinko gaming machine, in the variation display game in the probability variation state, a contrivance is made so that the number of possessed balls does not decrease, and a payout of substantially one big hit is guaranteed. In addition, if the special symbols are completed in the probability fluctuation state, the probability fluctuation state will be reestablished, so it is possible to continue the big hit in the form of a popular villa, and even if the player loses, Even if you are crowded, the Dalian Zhuang has a series of special symbols, so you can not only recover the loss at once, but also continue to play while hoping to win.

[0006]

However, in the conventional variable display gaming machine, the probability of occurrence of a big hit in a special symbol that the player expects most is predetermined in the design stage, and the probability is extremely low. Therefore, even if the player plays the game all day, it is not easy to make the odds fluctuate with special symbols. As a result, the player is frustrated and cannot be satisfied with the game regardless of whether the game is won or lost.

[0007] The present invention has been made to solve the above-mentioned problems, and is not limited to the occurrence of a big hit in a special symbol, but can be changed to a probability variation state by a method different from the conventional one. It is an object of the present invention to provide an information storage medium in which an apparatus, a probability variation method, and a jackpot probability change procedure are recorded.

[0008]

According to a first aspect of the present invention, there is provided a gaming machine according to the present invention, wherein a symbol such as a number or a picture is changed by winning a normal winning opening to achieve the above object. In the gaming machine which shifts to a jackpot state by aligning the symbols by a predetermined number, a detecting means for detecting that a special winning opening having a higher difficulty level of winning than the ordinary winning opening is won, When the detecting means detects that the special winning opening has been won, a probability improving means for improving the probability of a big hit occurrence is provided.

According to a second aspect of the present invention, in the gaming machine according to the first aspect of the present invention, the gaming machine further comprises limiting means for limiting the duration of the increased jackpot occurrence probability. After the jackpot occurrence probability is maintained for the number of games, the game is shifted to a normal probability state.

The gaming machine of the present invention according to claim 3 starts a variable display game in which symbols such as numbers and pictures are changed by winning a normal winning opening, and a big hit is achieved when a predetermined number of the symbols are arranged. In the gaming machine that transitions to the state, when detecting that a special winning opening with a higher degree of difficulty of winning than the normal winning opening has been won, and when the detecting means detects that a special winning opening has been won, A second variable display game starting means for starting a second variable display game, and a probability improving means for increasing a big hit occurrence probability when the second variable display game is in a predetermined state. .

According to a fourth aspect of the present invention, in the gaming machine according to the third aspect, the gaming machine further comprises limiting means for limiting the duration of the improved jackpot occurrence probability, wherein the limiting means is provided for a predetermined time or a predetermined time. After the jackpot occurrence probability is maintained for the number of games, the game is shifted to a normal probability state.

According to a fifth aspect of the present invention, there is provided a probability variation method,
In the probability variation method for a gaming machine, which starts a variable display game in which symbols such as numbers and pictures change by winning a normal winning opening, and shifts to a jackpot state when the symbols are arranged in a predetermined number. A first step of detecting that a special winning opening having a higher degree of difficulty in winning than the mouth is won, and a second step of improving the probability of a big hit occurrence when detecting that the special winning opening is won in the first step. And characterized in that:

[0013] According to a sixth aspect of the present invention, there is provided the probability variation method,
6. The probability changing method according to claim 5, further comprising a third step of limiting the duration of the improved jackpot occurrence probability, wherein the third step is performed after the jackpot occurrence probability is maintained for a predetermined time or a predetermined number of games. It is characterized by shifting to a probability state.

According to a seventh aspect of the present invention, there is provided a probability variation method comprising:
In the probability variation method for a gaming machine, which starts a variable display game in which symbols such as numbers and pictures change by winning a normal winning opening, and shifts to a jackpot state when the symbols are arranged in a predetermined number. A first step of detecting that a special winning opening having a higher winning difficulty than the mouth is won; and a step of starting the second variable display game when detecting that the special winning opening is won in the first step. It is characterized in that it includes two steps and a third step of improving the probability of a big hit occurrence when the second variable display game is in a predetermined state.

[0015] According to the eighth aspect of the present invention, there is provided a probability variation method comprising:
8. The probability variation method according to claim 7, further comprising a fourth step of limiting the duration of the improved jackpot occurrence probability, wherein the fourth step is performed after the jackpot occurrence probability is maintained for a predetermined time or a predetermined number of games. It is characterized by shifting to a probability state.

The information storage medium of the present invention according to claim 9 is:
An information storage medium in which a program for causing a gaming machine to execute a jackpot probability variation processing procedure is recorded, wherein the gaming machine starts a variation display game in which symbols such as numbers and pictures vary by winning a regular winning opening. A transition to a jackpot state is achieved by aligning the symbols by a predetermined number, and the jackpot probability variation processing procedure includes a detection procedure for detecting that a winning has been achieved in a special winning opening having a higher difficulty level of winning than the ordinary winning opening. ,
When the detection procedure detects that a special winning opening has been won, a probability improvement procedure for improving a jackpot occurrence probability is included.

According to a tenth aspect of the present invention, in the information storage medium according to the ninth aspect, the information storage medium includes a restriction procedure for restricting the continuation of the improved jackpot occurrence probability. After maintaining the jackpot occurrence probability for a predetermined number of games, the game is shifted to a normal probability state.

An information storage medium according to the present invention according to claim 11 is an information storage medium storing a program for causing a gaming machine to execute a jackpot probability variation processing procedure, wherein the gaming machine wins a normal winning opening. Starts a fluctuating display game in which symbols such as figures and pictures fluctuate, and shifts to a jackpot state when the symbols are arranged in a predetermined number. The jackpot probability variation processing procedure is more difficult to win than the ordinary winning opening. A detection procedure for detecting that a special winning opening with a high degree has been won, a second variable display game starting procedure for starting a second variable display game when the detection procedure detects that a special winning opening has been won, And a probability improvement procedure for improving a big hit occurrence probability when the second variable display game is in a predetermined state.

According to a twelfth aspect of the present invention, in the information storage medium according to the eleventh aspect, the information storage medium includes a restriction procedure for restricting the duration of the improved jackpot occurrence probability. After maintaining the jackpot occurrence probability for a predetermined number of games, the game is shifted to a normal probability state.

[0020]

Embodiments of the present invention will be described below in detail with reference to the drawings. However, a pachinko gaming machine will be described as an example of the gaming machine according to the present invention, but the present invention is also applicable to a slot machine, a video game, and the like.

FIG. 1 is an external view of a pachinko gaming machine according to the present invention.

1 is a pachinko gaming machine having a holding frame 2, and a game board 3 is fitted in an upper portion of the front of the holding frame 2. In addition, a supply tray 4 for supplying pachinko balls and a receiving tray 5 for storing payout balls are arranged at a lower position on the front surface of the holding frame 2. Further, on the right side of the receiving tray 5, a firing device 6 for firing a pachinko ball is arranged. Launching device 6
Is provided with an operation dial 7.
By rotating more than a predetermined amount, pachinko balls are continuously fired.

Numeral 8 denotes a variable winning device provided at the lower portion of the above-mentioned gaming board 3, which is opened intermittently a predetermined number of times in a predetermined case (for example, when three identical numbers are arranged). Is configured.

Reference numeral 9 denotes a display device provided at the center of the game board 3 for displaying a variable display game. On both sides of the display device 9, first specific winning openings 10 are provided, respectively. A second specific winning opening 11 is provided below the display device 9. When a pachinko ball wins in the first ordinary winning opening 10 and the second ordinary winning opening 11, a variable display game, which will be described in detail below, starts, and the transition of the variable display game is displayed on the display device 9. Although not specifically shown in the drawing, a special winning opening is provided immediately below the second ordinary winning opening 11, and the details thereof will be described below.

FIG. 2 is a schematic diagram showing a configuration of a display device provided in the pachinko gaming machine according to the present invention and its peripheral configuration.

The display device 9 includes a display section 12 having a color liquid crystal display (there is a display capable of 3D display in recent years, and a high-definition organic EL display can be used). 1 normal winning opening 10,
A winning ball display section 13 is provided for displaying the number of pachinko balls that have won the special winning port 20 having the 2 normal winning port 11 and the tulip 20a.

Reference numeral 21 denotes a digital start chucker, and a first LED display 22 when a pachinko ball passes.
When the number of (for example, a 7-segment LED display) fluctuates in ten ranges from 0 to 9 and stops at a specific number, the tulip 20a opens for a predetermined time and the pachinko ball wins the special winning opening 20 Will be possible. For example, the first
When the LED display 22 stops at the numeral 3, the tulip 20a opens for 0.1 second, and when the LED display 22 stops at the numeral 7, the tulip 20a opens for 0.2 second.

When a pachinko ball wins in the special winning opening 20, the second LED indicator 23 starts to change by the number of wins, and when the pachinko ball stops at the same two numbers, the gaming machine is operated for a predetermined time or a predetermined number of games. The state shifts to a probability fluctuation state in which a jackpot is likely to occur at a high probability. For example, when the game is stopped at a normal number such as "11", the probability is changed for about 5 minutes or about 10 games in the variable display game. Further, when the game is stopped at a special number such as “33” or “77”, the probability is changed for about 10 minutes or about 20 games for the variable display game. In the probability fluctuation state, the first LED display 22 is easily stopped at a specific number, the opening time of the tulip 20a is also improved to about several seconds, and the fluctuation display game is performed without interruption.
In addition, the number of holding balls does not decrease.

FIG. 3 is a block diagram showing a basic connection of the pachinko gaming machine according to the present invention.

The pachinko gaming machine 1 is controlled by a central control unit 14 including a CPU.
In addition, the ROM 14a for storing a control program and a RAM 14b having a plurality of flag areas necessary for control and temporarily storing data and the like are provided. Further, the central control unit 14 has a frame memory 16 for outputting various image data such as a variable display game and jackpot occurrence probability variation information to the display unit 12 via the driver 15, and an input device 18 via an interface 17. An output device 19 is connected.

The input device 18 inputs, for example, a device for generating a signal indicating that a pachinko ball has won the first normal winning opening 10, the second normal winning opening 11, and the special winning opening 20, or individual information of a player. Data input device. One example of a player inputting individual information from a data input device is reading an ID number of a cash card or IC card for purchasing a lending ball, or transmitting ID data of a player using communication. Performed by
In addition, the output device 19 generates various kinds of music linked to the variable display game, displays the number of the variable display games, and indicates that the big hit probability has been improved, based on the instruction from the central control unit 14. It is a device to do.

In each of the variable display games, the central control unit 14 generates a big hit or a big hit in a loss, a reach, a normal symbol or a special symbol (for example, a low probability normal state or a high probability probability variation state). ) Control.

Next, the operation of the pachinko gaming machine according to the present invention configured as described above will be described.

For the sake of simplicity, a variable display game in which a big hit occurs by rotating three drums and aligning the same three numbers in a row will be described as an example. However, recently, in addition to predetermined numbers and pictures,
A variable display game that simultaneously displays various images to further stimulate the player has appeared, but the present invention can be applied to this type of game. Further, the variation display game in which three drums rotate is taken as an example. However, the present invention is not limited to this, and various variations are possible, such as a game in which a playing card rotates and a symbol sequentially changes.

FIG. 4 is a schematic diagram showing a display unit of the pachinko gaming machine according to the present invention.

The display unit 12 is configured to display a rotating drum which is divided into three vertical parts and each of which is given a number from 0 to 9 and which is shown in the direction of the arrow shown in FIG. , From top to bottom in the figure). Also, in this figure, the left drum display unit 12a, the middle drum display unit 12b, and the right drum display unit 12c are numbered in order from the left, but the other drawings showing the display unit 12 have ranges that do not cause doubt. In some cases, these symbols are not added.

FIG. 5A to FIG. 5D in FIG.
Is a schematic diagram showing the display unit 12 of the pachinko gaming machine, and shows a time series from a start of the variable display game to a stop of the rotating drum after a predetermined time has elapsed.

In FIG. 5A, the three rotating drums rotate from the top to the bottom of the figure, and are rotating at such a high speed that the player cannot determine immediately after the start of the variable display game. Then, when a predetermined time has elapsed, the central control unit 14
Is a left drum display section 12a (see FIG. 5B), a middle drum display section 12b (see FIG. 5C), and finally a right drum display section 12c (see FIG. 5D). , The rotation speed is gradually reduced, and finally the rotation of all the drums is stopped, so that the numbers are displayed in a line in the central horizontal line.
In this case, the aligned numbers are “725”, and three identical numbers are not aligned in a horizontal line without reaching the reach state, and thus, a so-called complete loss state.

FIGS. 6A to 6F in FIG.
Is a schematic diagram showing the display unit 12 of the pachinko gaming machine, and shows the transition of the variable display game in chronological order.

FIGS. 6 (A) and 6 (B) follow exactly the same course as FIGS. 5 (A) and 5 (B) in FIG. 5, and a description thereof will be omitted. Through FIG. 6 (E)
The rotation gradually slows down when the left drum display section 12a is stopped and the middle drum display section 12b is "2" (FIG. 6).
(C)), after reaching “3” and “4” (see FIG. 6 (D)), and finally reaching at “7” (see FIG. 6).
(See (E)). FIG. 6F is a view similar to FIG.
The right drum display section 12c shows the number “7” from the reach state of
And a special jackpot state in which all figures are aligned with special symbols “7, 7, 7”, and the pachinko gaming machine 1
After the big hit game ends, the game shifts to a probability variation state in which a big hit occurs with a high probability. Note that, for example, in the case of a normal big hit in which a normal symbol such as "1, 1, 1" is used, the game returns to the normal probability state after the big hit game ends.

As a first method of changing the jackpot probability, a value (1000 types) from 0 to 999 is generated by random numbers, and when the value is 0 or 10, a normal jackpot is generated.
Assuming that the case of 5 or 15 is a probability variation jackpot, the ordinary jackpot probability and the probability variation jackpot probability are each 1/500
The total hit probability is 1/250. In this state, if the value of the random number to be generated is set to 100 types from 0 to 99, the ordinary jackpot probability and the probability variation jackpot probability are each 1/50, which is changed to a 1/25 jackpot probability in total. Also, in the former state, if the value of the generated random number is 10 and the probability variation is a big hit, the normal big hit probability is 10
1/00 and probability fluctuation jackpot probability is 3/1000
In the latter condition, the jackpot probability is usually 100
The 1 / th and probability variation jackpot probabilities are changed to 3/100.

As a second method, the first specific winning opening 10 or the second specific winning opening 11 is determined at a predetermined timing and time width.
This is a method of detecting that a pachinko ball has entered into the game, and determining an ordinary jackpot or a probability variation jackpot. For example, if it is detected whether or not a pachinko ball has entered a specific winning opening with a time width of 0.01 second every second, and a case where the pachinko ball has entered is regarded as a big hit, the big hit probability becomes 1/100. Naturally, by changing the timing and the time width in the same manner, it is possible to freely control the occurrence probability of the ordinary jackpot or the probability variation jackpot.

FIG. 7 is a flowchart showing a subroutine of the jackpot probability changing method according to the present invention.

The central control unit 14 enters this subroutine after the end of the variable display game in the normal probability state, determines whether or not a special winning opening has been won in step S100. The process ends with the probability kept in the normal state, but if a winning has been achieved, the jackpot probability is increased in step S102 and the process ends (for example, the process ends in a probability fluctuating state). When the jackpot probability increases, a special character (for example, a goddess or Mito Komon) may appear to display information to the effect that the jackpot occurrence probability has improved to the player.

FIG. 8 is a flowchart showing a subroutine of the jackpot probability changing method according to the present invention.

When the pachinko ball passes the digital start chucker 21, the central controller 14 generates ten kinds of numbers from 0 to 9 by random numbers, rotates the first LED display 22 for a predetermined time, and then generates the number. When the generated number is a predetermined number (for example, 3 or 7), this subroutine is called.

The central control unit 14 releases the tulip 20a for a time corresponding to the number generated in step S200, and proceeds to step S201. Then, in step S201, it is determined whether or not the pachinko ball has won a special winning opening. If it has not won, the process ends with the jackpot probability kept in a normal state in step S202. Transition.

The central control unit 14 changes the second LED display 23 in step S203 to start the second change game, determines in step S204 whether or not the same number has been obtained, and if not, determines in step S202 a big hit. The process ends with the probabilities kept in the normal state, but if the probabilities are aligned, the big hit probability is increased in step S205 and the process ends (for example, the process ends in a probability fluctuating state). When the jackpot probability increases, a special character (for example, a goddess or Mito Komon) may appear to display information to the effect that the jackpot occurrence probability has improved to the player.

FIG. 9 is a basic connection configuration diagram when the gaming machines according to the present invention are connected to a network.

Reference numeral 31 denotes a network server provided on the game management company side, and the pachinko parlor 32-1 via the communication network 30 (for example, the Internet communication network).
To 32-N or Game Center 34-1 to 34
-N is connected to the information terminals 33-1 to 33-N owned by the individual players and enables remote games. At the time of this remote game, the gaming machine 1 obtains the player individual information (for example, player ID) from the information terminals 33-1 to 33-N, and varies the big hit occurrence probability by the above-described method. Note that the gaming machine 1 used for the remote gaming may be a general mechanical gaming machine, but usually starts the game software stored in the main frame provided in the pachinko or game center from the information terminal. It is like taking the method.

In the information storage medium according to the present invention, the probability variation method is a series of jackpot probability change processing procedures,
The processing procedure is stored as a program for causing the gaming machine to execute.

[0052]

As described above, according to the gaming machine, the probability variation method and the information storage medium according to the present invention, when a special prize port is won in addition to a jackpot with a special symbol,
Alternatively, even when the numbers are aligned in the second variable display game, the state is shifted to the probability variable state, so that a new stimulus can be given to the player.

[Brief description of the drawings]

FIG. 1 is an external view of a pachinko gaming machine according to the present invention.

FIG. 2 is a schematic diagram showing a display device provided in the pachinko gaming machine according to the present invention and a configuration around the display device.

FIG. 3 is a block diagram showing a basic connection of the pachinko gaming machine according to the present invention.

FIG. 4 is a schematic view showing a display unit of the pachinko gaming machine according to the present invention.

FIG. 5 is a schematic view showing a display unit of the pachinko gaming machine according to the present invention.

FIG. 6 is a schematic view showing a display unit of the pachinko gaming machine according to the present invention.

FIG. 7 is a flowchart showing a subroutine of a jackpot probability changing method according to the present invention.

FIG. 8 is a flowchart showing a subroutine of a jackpot probability changing method according to the present invention.

FIG. 9 is a basic connection configuration diagram when the gaming machines according to the present invention are connected to a network.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pachinko gaming machine 3 Gaming board 8 Variable winning device 9 Display device 10 1st normal winning opening 11 2nd normal winning opening 12 Display unit 12a Left drum display unit 12b Middle drum display unit 12c Right drum display unit 14 Central control unit 14a ROM 14b RAM 15 Driver 16 Frame memory 17 Interface 18 Input device 19 Output device 20 Special winning opening 20a Tulip 21 Digital start chucker 22 First LED display 23 Second LED display 30 Communication network 31 Network server 32 Pachinko parlor 33 Information terminal 34 Game center

Claims (12)

[Claims] 1. A gaming machine which starts a variable display game in which symbols such as numbers and pictures are changed by winning a normal winning opening, and shifts to a big hit state when the symbols are arranged in a predetermined number. Detecting means for detecting that a special winning opening having a higher difficulty level than the winning opening has been won;
A gaming machine comprising: a probability improving unit that increases the probability of a big hit when the detecting unit detects that a special winning opening has been won. 2. A gaming machine according to claim 1, further comprising a limiting means for limiting the duration of the improved jackpot occurrence probability.
The gaming machine, wherein the limiting means continues the jackpot occurrence probability for a predetermined time or a predetermined number of games, and then shifts to a normal probability state. 3. A gaming machine which starts a variable display game in which symbols such as numbers and pictures are changed by winning a regular winning opening and shifts to a big hit state when the symbols are arranged in a predetermined number. Detecting means for detecting that a special winning opening having a higher difficulty level than the winning opening has been won;
A second variable display game starting means for starting a second variable display game when the detecting means detects that the special winning opening has been won, and a big hit occurring when the second variable display game is in a predetermined state. A gaming machine comprising: a probability improving means for improving a probability. 4. The gaming machine according to claim 3, further comprising limiting means for limiting the duration of the improved jackpot occurrence probability.
The gaming machine, wherein the limiting means continues the jackpot occurrence probability for a predetermined time or a predetermined number of games, and then shifts to a normal probability state. 5. A method of changing the probability of a gaming machine which starts a variable display game in which symbols such as numbers and pictures are changed by winning a regular winning opening and shifts to a big hit state when the symbols are arranged in a predetermined number. A first step of detecting that a special winning opening having a higher degree of difficulty in winning than the ordinary winning opening has been won; and a step of detecting a big winning occurrence when the first step detects that a special winning opening has been won. And a second step of improving. 6. The method according to claim 5, wherein
The method includes a third step of limiting the duration of the improved jackpot occurrence probability, wherein the third step is to shift to the normal probability state after maintaining the jackpot occurrence probability for a predetermined time or a predetermined number of games. Stochastic variation method. 7. A method of changing the probability of a gaming machine which starts a variable display game in which symbols such as numbers and pictures are changed by winning a regular winning opening and shifts to a big hit state when the symbols are arranged in a predetermined number. A first step of detecting that a special winning opening having a higher difficulty level than the ordinary winning opening is won, and a second variable display when detecting that the special winning opening is won in the first step. A probability variation method comprising: a second step of starting a game; and a third step of increasing a probability of occurrence of a big hit when the second variation display game is in a predetermined state. 8. The method according to claim 7, wherein:
The method includes a fourth step of limiting the duration of the improved jackpot occurrence probability, wherein the fourth step shifts to the normal probability state after maintaining the jackpot occurrence probability for a predetermined time or a predetermined number of games. Stochastic variation method. 9. An information storage medium in which a program for causing a gaming machine to execute a jackpot probability variation processing procedure is recorded, wherein said gaming machine has a variation in which a symbol such as a number or a picture is varied by winning a regular winning opening. The display game is started, the symbols are arranged in a predetermined number, and the state shifts to the jackpot state, and the jackpot probability variation processing procedure determines that the player has won a special winning opening having a higher difficulty level than the ordinary winning opening. An information storage medium comprising: a detection procedure for detecting; and a probability improving procedure for improving a probability of a big hit occurrence when the detection procedure detects that a special winning opening has been won. 10. The information storage medium according to claim 9, further comprising a restriction procedure for restricting the duration of the improved jackpot occurrence probability, wherein said restriction procedure maintains the jackpot occurrence probability for a predetermined time or a predetermined number of games. An information storage medium characterized in that the state is changed to a normal probability state later. 11. An information storage medium in which a program for causing a gaming machine to execute a jackpot probability variation processing procedure is recorded, wherein said gaming machine has a variation in which a pattern such as a number or a picture is varied by winning a normal winning opening. The display game is started, and when the symbols are arranged in a predetermined number, the state shifts to a big hit state,
The jackpot probability variation processing procedure is a detection procedure for detecting that a special winning opening with a higher degree of difficulty of winning than the normal winning opening has been won, and when the detection procedure detects that a special winning opening has been won, Second to start the second variable display game
An information storage medium comprising: a variable display game starting procedure; and a probability improving procedure for improving a large hit occurrence probability when the second variable display game is in a predetermined state. 12. The information storage medium according to claim 11, further comprising a restriction procedure for restricting the duration of the improved jackpot occurrence probability, wherein said restriction procedure maintains the jackpot occurrence probability for a predetermined time or a predetermined number of games. An information storage medium characterized in that the state is changed to a normal probability state later.