JP2001340535A - Game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem of lacking in novel feature 8 the game property of a B-B game in a conventional slot machine. SOLUTION: Random number values 0-2 are set for selecting a lottery table in a working region of an RAM 25 (step 205). One random number value is optionally extracted out of the set random number values 0-2, and whether or not the extracted random number value is 0 is discriminated (step 206). In the case the extracted random number value is 0, a prize winning probability table A is set as a prize winning probability table of a general game out of a B-B game (step 207). In the case the random number value is not 0, whether or not the extracted random number value is 1 is discriminated (step 208). In the case the extracted random number value is 1, a prize winning probability table B is set (step 209). In the case the extracted random number value is not 1, a prize winning probability table C is set (step 210). Using one of the prize winning probability tables A, B, C, a probability lottery is carried out by a prize winning mode determining means to determine a prize winning combination in the general game out of the B-B game (step 210).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gaming machine having various winning modes, and more particularly to a gaming machine for executing a special game in which a game advantageous to a player is performed a plurality of times when a special gaming winning mode is determined. It is about.

[0002]

2. Description of the Related Art Conventionally, in such a gaming machine, a winning mode is determined by comparing an extracted random number value with data in a predetermined winning probability table. There are various modes of winnings given to the player according to the winning determination result.

For example, in the case of a slot machine, when a predetermined winning symbol is arranged on a variable display section during a normal general game in which various winning modes of a payout are generated, a small winning mode in which a predetermined number of medals are paid out. is there. In addition, there is also a winning mode of a winning game called a regular bonus game (hereinafter referred to as an RB game). This RB game occurs when a predetermined symbol different from a small winning prize symbol is completed during a general game. In the RB game, a high payout game in which a high payout is provided can be performed once.

[0004] A big bonus game (hereinafter referred to as B.
There is also a jackpot winning mode called "game B"). This BB game occurs when predetermined winning symbols different from small hits and middle hits are collected during a normal general game. In the BB game, a set of the BB normal game in which various payout winning modes are generated and the high payout game (RB game) can be performed a plurality of times. That is, in the BB game, a special game in which a game advantageous to the player can be performed a plurality of times is executed.

[0005] The general game during the BB game is the R game during the BB game.
-It is performed before shifting to the B game. In this general game during B / B, a small hit prize is generated with a higher probability than during the above-described normal general game, and when the small hit prize symbols are arranged on the variable display portion, the number corresponding to the small hit is obtained. Is paid out to the player. In such a BB game, a player can usually acquire a large amount of medals.

In the above-described slot machine, there is a slot machine in which two types of tables, a high probability table and a low probability table, are prepared as a prize probability table used for prize determination in a normal general game. When this high probability table is used for the prize determination at the time of the general game, compared with the case where the low probability table is used, for example, a certain small hit prize occurs with a high probability,
In addition, all small hit prizes are generally generated with a high probability. The high probability table and the low probability table are switched according to the count value of the difference number counter. The difference number counter is a counter that counts the difference between the number of medals inserted into the machine and the number of medals paid out to the player. The switching between the high-probability table and the low-probability table performed here is performed when the value of the payout number with respect to the insertion number falls below a predetermined value.
This is merely a remedy for payout, and is not aimed at improving the playability.

When the BB game is completed, a normal general game using such a high probability table or a low probability table as a winning probability table is performed. Such a BB game or a general game is repeatedly performed. When it is, the game becomes monotonous and lacks interest. For this reason, a proposal has been made to provide a slot machine that is rich in change by deciding a winning probability table to be used in the next general game by lottery after the end of the BB game, regardless of the count value of the difference counter. Conventionally, this is disclosed in Japanese Patent Application Laid-Open No. 9-164238.

After the BB game ends, the next BB game starts by switching the winning probability table used in the next general game to the high probability table regardless of the count value of the difference counter. Proposals to improve the medal retention until they are made have been proposed in Japanese Patent Application Laid-Open No. 9-1642.
No. 36 discloses this.

In addition, the type of the winning probability table used in the general game during BB is selected according to the type of symbols arranged in the variable display section when entering the BB game. Conventionally, there is a slot machine that changes the probability of occurrence of each small hit prize. According to this slot machine, the fun of the general game during B / B increases, and the gaming property is improved.

[0010]

However, BB
After the game is over, in the conventional slot machines disclosed in the above publications in which the winning probability table used in the next general game is determined by lottery or switched to the high probability table, the BB game after the BB game is over. Although the playability of a normal general game can be improved, the playability during a BB game in which the player is most interested is the same as that of the conventional game, and there is no change.

In the above-mentioned conventional slot machine in which the type of the winning probability table at the time of the general game during B / B is selected according to the type of symbols to be arranged, the winning probability table once selected is the same as the one in the B / B game. It does not change throughout each general game and each high payout game, and is maintained at the same probability value until the BB game ends. Therefore, this slot machine improves the playability during the BB game to some extent, but has not yet been sufficiently satisfied by the player.

Further, since the method of selecting the winning probability table is determined by the symbols arranged on the variable display section, it is advantageous for a player who is familiar with the game contents, but aimed at a player who is not familiar with the game contents. The symbol cannot be specified, and the player who is not good at pushing the reel symbol cannot stop the predetermined symbol. As a result, not all players could fully enjoy the fun of the game. In addition, if the profits are biased to some players in this way, the players may feel unequal and difficult to use for the game store.

[0013]

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and has a variable display section for variably displaying a plurality of symbols, a predetermined winning probability and a random number value. A prize mode determining unit that determines a prize mode by comparing the data with the data in the table; a stop control unit that controls a symbol stopped and displayed on the variable display unit according to the prize mode determined by the prize mode; A special game winning mode determined by the mode determining means, a game processing control unit for executing a special game in which the player can play a game advantageous to the player a plurality of times. A plurality of prize probability tables used by the player, and the prize mode determining means selects and uses the plurality of prize probability tables by random number lottery during the special game.

According to this configuration, the winning probability table used in the special game is switched and used during the special game. For example, when the special game includes a plurality of sets of a special game during a special game that generates various payout winning modes and a high payout game that provides a high payout, the winning probability table is set at the time of the general game during the special game. Used by switching.

Further, the winning probability value differs depending on each game during the special game, and the winning probability value changes during the special game.

In addition, the switching of the winning probability table during the special game is performed by selecting the random number of the machine, so that the player depends on the player's familiarity with the gaming machine and the skill of the pressing operation as in the related art. There is no.

[0017]

Next, an embodiment in which the gaming machine according to the present invention is applied to a slot machine will be described.
FIG. 1 is a perspective view of the slot machine 1 according to the present embodiment when viewed obliquely from the front.

The housing 2 of the slot machine 1 is provided with a front panel 3 facing the player. Behind the front panel 3, three reels 4, 5, 6 constituting variable display means are provided.
Are provided rotatably. On the outer peripheral surface of each of the reels 4, 5, and 6, a symbol row including a plurality of types of symbols (hereinafter, referred to as symbols) is drawn. In the present embodiment, symbols such as “red 7”, “blue 7”, “watermelon”, “orange”, “cherry” and “plum” are drawn. Three of these symbols are observed through transparent display windows 7, 8, 9 provided on the front of the front panel 3.

At the lower side of the display windows 7, 8, and 9, an insertion slot 10 for a player to insert up to three game medals per game, and a credit instead of inserting a game medal into the insertion slot 10 are provided. A bet switch 12 for betting up to three game medals within the range of the balance, and a credit number display unit 13 including a 7-segment LED for displaying the credit balance are provided.

In the display windows 7, 8, and 9, three pay lines L1, L2A and L2B in the horizontal direction and two pay lines L3A and L3B in the oblique direction are drawn. Are the winning lines L1, L2A, L2B, L3A, L
5 activation line display lamps 11a to 11B corresponding to 3B
11e is provided.

Prior to the start of each game, when the player inserts one game medal into the insertion slot 10 or presses the bet switch 12 once, the bet amount becomes "1", and FIG.
As shown in (a), only the center pay line L1 is activated, and the activated line display lamp 11c is turned on. When the player inserts two game medals into the insertion slot 10 or presses the bet switch 12 twice, the bet amount becomes “2”, and as shown in FIG. Are activated, the activated line display lamps 11b, 11c and 11 are activated.
d lights up. When the player inserts three game medals or presses the bet switch 12 three times, the bet amount becomes “3” and, as shown in FIG. All winning lines L1, L2A, L2B, L
3A and L3B are activated, and all the activated line display lamps 11a to 11e are turned on.

Below the bet switch 12, credit / payout (PLAY CRE) of game medals obtained by the player is provided.
Credit / payment changeover switch (hereinafter referred to as C / P switch) 1 for switching by pressing DIT / PAY OUT)
4, a game start lever 15 for simultaneously rotating the reels 4, 5, and 6 in accordance with the tilting operation of the player and a game start lever 15 for individually stopping the reels 4, 5 and 6 in response to the pressing operation of the player Are provided with three stop button switches 16, 17, 18 arranged corresponding to the reels 4, 5, 6, respectively.

A payout display section 19 is provided on the front upper portion of the housing 2 and a combination table showing types of symbol combinations to be awarded and the number of game medals to be paid out for each award is displayed. ing. A game medal tray 21 for storing game medals to be paid out through a medal payout opening 20 and a variety of sound effects emitted from speakers provided in the housing 2 are output to a lower portion of the front of the housing 2. The sound transmission hole 22 is provided.

In the present slot machine 1, (1) a general game, (2) a BB game, and (3) an RB game described below are performed.

(1) General Game In a general game, when three symbols “red 7” are aligned on the activated pay line, a BB game occurs, and three symbols “blue 7” are activated on the activated pay line. When they are aligned, an RB game occurs. Further, when three “watermelon” and “orange” are aligned on the activated prize line, a small hit prize is generated. Further, when one symbol “Cherry” stops on the activated pay line L1 of the first reel, a small win of two cherry wins occurs, and the activated pay line L2A or L2B of the first reel is played at the time of a three-betting game. When one symbol "cherry" stops, a four-cherry small winning prize is generated. When three symbols “plum” are aligned on the activated pay line, a replay occurs. If the arranged symbol combination is not in any of these modes, an out-of-game (game without payout) occurs.

When an RB game or a BB game winning occurs, 15 payout medals are paid out, and after the payout of the medals, a high payout RB game, in which a high payout is awarded to a player, A BB game which is a special game in which a game advantageous to the player can be performed a plurality of times can be performed. Also, "watermelon", "orange", "4 cherry",
When each small hit prize of "two cherries" is generated, 15, 10, 4, and 2 medals are paid out, respectively, and the generated small hit game is paid out and the game ends. In addition, when a replay game occurs, there is no medal payout, but the game can be played again without medal insertion.

As the winning probability table used for the winning determination in the general game, two types of tables, a high probability table and a low probability table, are prepared. When the high probability table is used for the winning determination, all small hit prizes are generally generated with a high probability, as described later, as compared with the case where the low probability table is used. The high probability table and the low probability table are switched according to the count value of the difference number counter described above.

(2) BB Game In the BB game, first, a general game is executed. An out-of-game may also occur in the general game during the BB game (general game in the BB), but the above-described small hit prize has a higher probability than in the normal general game other than the BB game. appear. In the slot machine 1 according to the present embodiment, the winning determination performed in the general game during BB is performed using three winning probability tables as described later.

When a combination of plums is arranged during the B / B regular game, six medals are paid out.

Thereafter, a high payout game in which a high payout is awarded is executed. The high payout game is performed with one bet. If a combination of plums is further arranged during the high payout game, a jackpot game prize is generated and 15 medals are paid out. Although a losing game also occurs during the high payout game, a jackpot game prize occurs with a high probability of about 9/10. In this high payout game, in the present embodiment, the jackpot game prize is generated eight times, or the total number of games executed during the high payout game is 12
It ends when the number of times is reached.

When the high payout game is over, the above-described BB general game is performed again. If the symbol combination described above occurs during the general game,
Thereafter, the high payout game described above is further performed. The BB game is a repetition of the set of the general game and the high payout game described above, and this set is performed a predetermined number of times. In the present embodiment, three sets are performed. For example, as shown in FIG. 3, first, the first set of the BB general game and the first set of the RB game are performed, and then, the second set of the BB general game is performed. And the second set of the RB game are performed. Then, finally, the set of the third general game during the BB and the third time of the RB game is performed. In addition,
Here, the description is made on the assumption that the game proceeds smoothly without puncturing on the way. When a series of three sets of games are performed, the BB game ends. However,
During the BB game, if the total number of games in the above-mentioned general game state and the total number of games excluding the number of games in the high payout game exceeds a predetermined number of times, finish.
In this embodiment, the predetermined number is set to 30 times.

(3) RB Game The RB game ends after the high payout game shown in the BB game is performed once. In this RB game, unlike the BB game, the above-mentioned general games in which small hits occur with high probability are not performed.

FIG. 4 shows a control unit 23 for controlling the game processing operation in the slot machine 1 of the embodiment.
And a circuit configuration including peripheral devices electrically connected thereto.

The control unit 23 has a read-only memory (RO
M) Central processing unit (CPU) 26 including a random access memory (RAM) 25, a clock circuit 27 for generating an operation clock signal for the CPU 26, and a random number setting unit for determining random numbers for random number sampling 28
It is comprised including.

The clock circuit 27 includes a clock pulse generation circuit 29 for generating a reference clock signal having a predetermined frequency,
A frequency divider 30 for generating an operation clock signal for the CPU 26 by dividing the frequency of the reference clock signal. The random number setting unit 28 extracts a random number generator 31 that generates a random number within a predetermined range (for example, 0 to 16383) in accordance with a command from the CPU 26 and a random number RD generated by the random number generator 31 and transfers the extracted random number RD to the CPU 26. A random number sampling circuit 32 is provided.

A plurality of input / output ports (I / O ports) provided in the CPU 26 include a bet switch 12, a C
/ P switch 14, game start lever 15, slot 10
A medal sensor 33 for detecting a game medal inserted in the
The motor drive circuit 34, reel position detection circuit 35, reel stop signal circuit 36, hopper drive circuit 37, payout completion signal circuit 38, display drive circuit 39, speaker drive circuit 40, and lamp drive circuit 41 are connected.

The motor drive circuit 34 includes reels 4, 5,
6, stepping motors 42, 43, 4 for driving
4 are connected to the reel stop signal circuit 36, and the stop button switches 16, 17, and 18 are connected. When the player tilts the game start lever 15, the CPU 26
Detects this, controls the motor drive circuit 34, and supplies drive pulses to the stepping motors 42, 43, 44 to rotate the reels 4, 5, 6. When the stop button switches 16, 17, and 18 are pressed, the reel stop signal circuit 36 detects this and transfers a detection signal to the CPU 26, and the CPU 26 sends a detection signal to the motor drive circuit 34 based on the detection signal. Stepping motors 42, 43,
By stopping the supply of the drive pulse to 44, the reels 4, 5, and 6 are stopped.

The reel position detection circuit 35 includes a reel 4
Optical sensors and the like for detecting the rotational positions of 5, 6 are provided,
The position detection signal detected by the optical sensor or the like
6, the position information of each symbol drawn on the reels 4, 5, and 6 is notified. Hopper drive circuit 3
7, a storage hopper 45 for storing game medals is connected. The payout completion signal circuit 38 is connected to a medal detection unit 46 for counting the number of game medals to be paid out from the storage hopper 45 to the game medal tray 16 at the time of winning. When the count value actually paid out reaches the predetermined number of payouts, a payout completion signal is transferred from the payout completion signal generation circuit 38 to the CPU 26.

The display drive circuit 39 is connected to the activation line display lamps 11a to 11e and the credit amount display unit 13, and displays these display lamps 11a to 11e and the display unit 13 in accordance with an instruction from the CPU 26. . A speaker 47 that outputs a sound effect through the sound transmission hole 22 is connected to the speaker drive circuit 40, and a back light for transmitting and illuminating the symbols appearing through the display windows 7, 8, and 9 from the back side to the lamp drive circuit 41. Lamp 48
Is connected.

The ROM 24 stores, as a sequence program, a procedure of a game process executed by the slot machine 1, a winning probability table, a winning determination table, and the like. The RAM 25 has a CPU
A storage area is provided for storing various processing data, flag data, and the like when the processing is performed according to the sequence program.

FIG. 5 conceptually shows a winning probability table stored in the ROM 24 described above. The winning probability table stores data for dividing a predetermined range of random numbers generated by the random number generator 31 into each winning mode, and this data is determined by the game state and the number of inserted medals. For example, when one medal is inserted at the time of “general game”, the high probability table T _S1H or the low probability table T _S1L is selected from the table, and a certain range of random numbers generated by the random number generator 31 is Any of these tables T
_Partitioned by data stored in _S1H or T _S1L . That is, it is determined to which group of the section in the table the one random number value specified by the sampling circuit 32 belongs, and a winning mode is determined. Here, the control unit 23 including the random number generator 31, the sampling circuit 32, the CPU 26 and the like checks the extracted random number value against data in a predetermined winning probability table to determine a winning mode. Is composed.

Each table T during a general game_S1H, T
_S1L, T_S2H, T_S2L, T_S3H, T _S3LThen, the random number is
BB game, RB game, small hit prize game, re
Glue each section of play game (replay) and out
Divided. The number of inserted medals increases to two or three
As a result, the probability of occurrence of each winning is increased.

In the winning determination, the BB or RB game occurs and the BB or RB flag is set. However, when the reels are stopped, if the symbol combinations of the BB or RB game are aligned, When there is no game, a game state of “being hit inside BB or RB”, which is a state immediately before the BB or RB game enters, is entered. In this game state, the table T _F1 ,
T _F2 and T _F3 are selected according to the number of inserted medals. In each of these tables, random numbers are grouped into small winning prize games, replays, and loss sections. Further, when the game state becomes "BB / B regular game", tables T _{B11 to} T _B13 , T _{B21 to} T _B23 ,
T _B31 ~T _B33 is selected according to the input number of medals. In each of these tables, random numbers are grouped into small win prize games, jack game (replay) prize wins, and loss sections.

The table shown in FIG. 6 shows an example of data stored in each of the winning probability tables when the number of medals is three as shown in FIG. In other words, the game state is a general game (Hig
In the high probability winning probability table T _S3H at the time of h), the lottery combinations BB, RB, watermelon, orange, replay, four cherries, and two cherries are respectively 52, 5
0,300,2100,2245,2200,2600
Is stored. In addition, the numerical data of the lottery combination of the re-game is, in the game state of the general game during BB,
This shows the winning probability of entering the RB game (high payout game). These numerical data indicate a random number width for dividing random numbers in the range of 0 to 16383 generated by the random number generator 31. For example, when the high probability winning probability table T _S3H is used, the BB game has 52 / It occurs with a probability of 16384.

The low probability prize probability table T _S3L when the game state is the general game (Low), the prize probability table T _F3 during the inside win, and the prize probability table T during the BB general game.
_{For B31} (A), _TB32 (B), _TB33 (C),
Random number width data for classifying the generated random numbers is similarly stored. In the same table, a portion in which a horizontal bar without numerical data is indicated indicates that the winning combination is not selected. As shown in the numerical data used in the high probability winning probability table T _S3H and the low probability winning probability table T _S3L , all small _{wins of} watermelon, orange, four cherry, and two cherry are high probability winning probability. In the table T _S3H , it generally occurs with a high probability.

In the present embodiment, there are three types of winning probability tables A, B, and C used in the general game during BB, which are selected and switched by lottery as described later. In the winning probability table A, the probability that the replay and the lottery of each cherry will be drawn is set higher than the other tables B and C, and the watermelon drawing probability is set lower. Further, in the winning probability table B, the probability that the replay and the lottery of each cherry will be drawn is set lower than the other tables A and C, and the watermelon drawing probability is set higher. Further, in the winning probability table C, the probability of the lottery of the re-game being drawn is set to be the highest as compared with the other tables A and B, and the probability of entering the RB game during the general game during BB is the highest. Is set.

The expected values when using the respective winning probability tables A, B, and C are represented by E (A), E (B), and E, respectively.
(C), an expected value when the pull-in probability is not taken into account, that is, an expected value E ₀ (A) when it is assumed that all the symbols aimed at by the pushing operation are stopped at desired positions of the reels 4 to 6. , E ₀ (B) and E ₀ (C),
The following relational expression (1) is set to hold.

E ₀ (A) ≦ E ₀ (B) ≦ E ₀ (C) (1) Here, the eye-pressing operation is performed by closely watching each reel symbol moving in the windows 7 to 9 and moving at a high speed. In order to stop the desired symbol at a desired position,
18 means to operate. The expected value E (x) is a value that indicates how many medals can be paid out for one medal inserted in the game, and is expressed by the following equation (2).

E (x) = (lottery random number width / total random number range) × number of payout medals × (1 / number of medals bet) × (number of drawn-in / symbol combinations) (2) Here, the random number width is 6 is numerical data assigned to each lottery combination, and the entire random number range is the entire range 1 of random numbers 0 to 16383 generated by the random number generator 31.
6384. Further, the number of payout medals is the number of medals paid out for each winning combination, and the number of bet medals is the number of one to three medals bet on a game. The number of symbol combinations is the total number of symbols that can be combined by 21 symbols drawn on each of the reels 4 to 6, and is 21 ×
21 × 21 is 9261. The number of draw-in is a numerical value determined by the arrangement of symbols drawn on each of the reels 4 to 6 and the reel stop control by the CPU 26, and the draw-in probability is determined by (number of draw-in / number of symbol combinations).

Each expected value E ₀ (A), shown in equation (1),
E ₀ (B) and E ₀ (C) indicate that the pull-in probability is 926.
This is the expected value when it is assumed that it has become 1 at 1/9261. Each expected value E (A), E taking into account the pull-in probability
(B) and E (C) are set equal as shown in the following equation (3).

E (A) = E (B) = E (C) (3) The symbol table (not shown) stored in the ROM 24 shown in FIG. And each symbol string is represented by a symbol. The symbol table includes a code number sequentially assigned to each reel at a constant rotation pitch based on a rotation position at which a reset pulse is generated, and a symbol code indicating a symbol provided corresponding to each code number. Are stored.

The ROM 24 stores a winning symbol combination table (not shown). In this winning symbol combination table, the symbol code of each winning symbol combination posted on the payout display section 19,
A symbol code of a symbol combination constituting the “reach eye”, a winning determination code representing each winning, a winning medal payout number, and the like are stored. Here, the reach is defined as a state in which the BB game winning flag is set in the internal lottery and the above described BB or RB internal winning game state is set.
This is a symbol combination that suggests to the player that the occurrence of the BB or RB game is near. The winning symbol combination table is referred to at the time of stop control of the first reel 2, the second reel 3, and the third reel 4, and at the time of confirming a winning after stopping all the reels.

Next, the operation of the slot machine 1 controlled by the control unit 23 will be described with reference to the flowchart shown in FIG.

The CPU 26 first determines whether or not a medal BET has been placed (see step 101 in FIG. 7). This determination is made when a medal is inserted into the insertion slot 10 and a detection signal is input from the medal sensor 33 or when an input is received from the bet switch 12.
In this case, the CPU 26 determines whether or not the game start lever 15 has been operated (step 102) .If the determination is "YES", the CPU 26 instructs the motor drive circuit 34 to output all reels. 4, 5, and 6 are driven to rotate (step 103), and then a winning determination is made (step 1).
04).

This winning determination is made by using the winning probability table of the general game state or the middle game state inside BB or RB shown in FIGS. 5 and 6, and is generated by the random number generator 31. It is determined based on which section data in the winning probability table the random number extracted by the sampling circuit 32 belongs. Then, according to the lottery combination of the section data to which the extracted random number belongs, the winning flag is set in the RAM.
It is set in 25 predetermined areas.

Next, as a result of the winning determination, stop control of the reels 4 to 6 is performed according to the type of the winning flag set (step 105). Then, it is determined whether or not the symbol combination when the reels 4 to 6 are stopped corresponds to one of the winning combinations (step 106). If “NO”, the process returns to step 1, and if “YES”, Further, it is determined whether or not the symbol combination at the time of stopping the reel is the above-mentioned "replay" game (step 107). This judgment is “NO”
If so, a predetermined number of medals are paid out (step 10).
8) Then, the process proceeds to the next step 109, and if "YES", the process returns to the above-mentioned operation determination of the start lever 15 (step 102) without paying out medals.

Next, it is determined whether or not the "BB game" has occurred in the winning determination in step 106 (step 109).
The game B is executed (Step 110). Also, "B.
If the "B game" has not occurred, it is determined whether or not the "RB game" has occurred (step 111).
When the "RB game" has occurred, the RB game is executed (step 112).

FIGS. 8 to 10 show the game processing of the BB game performed in step 110 described above.

When entering the BB game, first, BB
The number of possible games is set to 30 (FIG. 8, step 201), and the number of possible games of the RB game, which is a high payout game in the BB game, is set to 3 (step 202). Next, it is determined whether or not a medal bet has been made (step 203). This determination is “YES” when a medal is inserted into the insertion slot 10 and an input is made from the medal sensor 33 or an input is made from the bet switch 12 as in step 101 of FIG.
In that case, it is next determined whether or not the game start lever 15 has been operated (step 204).

If this determination is "YES", then B.
In order to select the winning probability table of the general game during the B game by machine lottery, random numbers 0 to 2 are set in the work area of the RAM 25 for selecting the lottery table (step 205). Next, the CPU 26 selects one of the set random numbers from 0 to 2.
One is arbitrarily extracted, and it is determined whether or not the extracted random number value is 0 (step 206). If the extracted random number value is 0, B
A winning probability table A illustrated in FIG. 6 is set as the winning probability table of the general game during the B game (step 2).
07), the process proceeds to step 211 described later. On the other hand, if the extracted random number value is not 0 in step 206,
It is determined whether or not the extracted random number value is 1 (step 20).
8). If the extracted random number value is 1, the winning probability table B illustrated in FIG. 6 is set as the winning probability table of the general game during the BB game (step 209), and the process proceeds to step 211 described later. On the other hand, if the extracted random number value is not 1 in step 208, it is assumed that the extracted random number value is 2, and then the winning probability table illustrated in FIG. C
Is set (step 210).

Next, using one of the set winning probability tables A, B, and C, a probability lottery is performed by the winning mode determining means, and a winning combination of a general game during BB is determined (step 211). Thereafter, the CPU 26 sends a drive signal to the motor drive circuit 34 to rotationally drive all the reels 4, 5, and 6 (step 212). Next, the stop buttons 16-1
It is determined whether or not the reel stop signal has been input from the reel stop signal circuit 36 by the operation of Step 8 (Step 213),
When the reel stop signal is inputted, the reels 4 to 6 corresponding to any of the operated stop buttons 16 to 18 are controlled to stop according to the winning combination (step 214). Then, it is determined whether or not the reel stop control has been performed for all three reels 4 to 6 (step 215). If not all the reels have been stopped, the processing of steps 213 to 215 is repeated.

When the reel stop control for all the reels 4 to 6 is completed in step 214, next, a winning determination as to whether or not there is a win is performed in the same manner as in step 106 in FIG. 7 (FIG. 9, step 216). ). That is, step 2
At 11, it is determined whether or not the symbol combination corresponding to the winning combination determined by the winning mode determination means is stopped and displayed on the reels 4 to 6. If there is no hit, the process proceeds to step 219 described later. If there is a hit, medals are paid out (step 217), and medals are paid out until the number of payouts according to the winning combination is reached (step 218). ).

Next, the general game in BB is set to 1 as described above.
Has been performed twice, so that the B initially set to 30 in step 201
・ 1 is subtracted from the number of possible games of the B game, and the RAM 25
Is updated (step 219). Next, in step 216, it is determined whether or not the hit is an RB game (step 220). If the hit is an RB game, the RB game shown in the flowchart of FIG.
The game processing of the B game is performed. If the result of the determination in step 220 is not a hit of the RB game,
When one game process of the B game is completed, it is next determined whether or not the number of possible games of the RB game during the BB game, which was initially set to 3 in the process of step 202, has become 0. (Step 221). When the number of times reaches 0, the B / B game is terminated. When the number of times is not yet 0, the number of playable times of the B / B game obtained by subtracting 1 in the process of step 219 is next. Is determined to be 0 (step 222). When the number of times becomes 0, the BB game is ended. When the number of times is not yet 0, the process returns to step 203 to repeat the BB normal game.

Next, the game processing of the RB game which is performed when it is determined in step 220 that the RB game has been won will be described with reference to the flowchart of FIG.

First, the number of possible games of the RB game is set to 12
(Step 231 in FIG. 10, FIG. 10), and the number of jackpots that can be won during the RB game is set to 8 (step 232). Next, it is determined whether or not a medal BET has been placed (step 233). This determination is made in the same manner as in step 203 of FIG. 8 when a medal is inserted into the insertion slot 10 and an input is made from the medal sensor 33 or when an input is made from the bet switch 12.
S ". In this case, it is next determined whether or not the game start lever 15 has been operated (step 234).

If this determination is "YES", then R.
Using a winning probability table prepared in advance as a winning probability table during the B game, a probability lottery is performed by the winning mode determining means, and winning / non-winning of the jack game is determined (step 235). Thereafter, the CPU 26 sends a drive signal to the motor drive circuit 34 to send all the reels 4, 5, 6
Is driven to rotate (step 236). Next, it is determined whether or not a reel stop signal has been input from the reel stop signal circuit 36 by operating the stop buttons 16 to 18 (step 2).
37) When the reel stop signal is input, the reel 4 corresponding to one of the operated stop buttons 16 to 18
6 to stop control in accordance with the winning / non-winning of the jack game (step 238). Then, it is determined whether or not the reel stop control has been performed for all three reels 4 to 6 (step 239). If not all the reels have been stopped, the processing of steps 237 to 239 is repeated.

When the reel stop control for all the reels 4 to 6 is completed in step 239, it is next determined whether or not there is a jackpot game (step 24).
0). That is, it is determined whether or not the symbol combination corresponding to the jackpot winning is stopped and displayed on the reels 4 to 6. If there is no hit, the process proceeds to step 244 described below.
In step 232, 1 is subtracted from the number of jackpots that can be won in the RB game initially set to 8, and
Is updated (step 241). Thereafter, medals are paid out (step 242), and medals are paid out until the number of payouts according to the jackpot game prize is reached (step 243).

Next, since the RB game has been performed once as described above, the RB game initially set to 12 in step 231 is executed.
The value stored in the RAM 25 is updated by subtracting 1 from the number of possible games (step 244). Next, step 2
It is determined whether or not the number of jackpot wins in the RB game obtained by subtracting 1 in the process of 41 has become 0 (step 245). If this number is not yet 0, it is next determined whether or not the possible number of jack game play in the RB game, which is obtained by subtracting 1 in the process of step 244, has become 0 (step 246). If this number is not yet 0, the process returns to step 233 to repeat the RB game. In addition, when the number of times the jack game can be won becomes 0 in step 245, and when the number of times the jack game can be played becomes 0 in step 246, next, in the process of step 202, B which was initially set to 3・ B
1 is subtracted from the number of possible R / B games during the game (step 247), and the value stored in the RAM 25 is updated to
・ End the B game processing.

The R performed in step 112 of FIG.
The game processing of the B game is the same as that of the flowchart of FIG.
This is the same as the B game game process.

According to the slot machine 1 of this embodiment, the winning probability tables A, B, and C used during the general game during BB are stored in steps 205 to 2.
By the processing of 10, it is switched and used every time the general game during B / B is executed. For this reason, the slot machine according to the present embodiment improves the playability of the BB regular game in comparison with the conventional slot machine that changes only the winning probability table used in the regular game after the BB game.

In addition, the general game during BB is performed once, twice, and three times.
The winning probability value of each small hit prize and the replay is different each time the game is played, and the winning probability value changes during the BB game, so that the winning probability value is constant from the conventional slot machine through the BB game. Also, the playability of the BB game is improved.

Further, the switching of the winning probability tables A, B, C of the general game during B / B is performed by selecting the random number of the machine (see steps 205 to 210).
Unlike the related art, the player is not involved in the familiarity with the slot machine 1 or the skill of the eye-pressing operation. Therefore, even if the winning probability table is switched by random lottery at the time of the general game during B / B and the winning determination is made, the profit is not biased to some players and the gaming machine does not become a difficult to use gaming machine. .

In the above-described embodiment, the case where the winning probability tables A, B, and C are selected by random lottery and used by switching each of the three sets of the BB general game and the RB game will be described. did. However, the switching time is not limited to this. For example, the prize probability table A may be set for each game of BB general games in which 30 games are performed, or for each of several games of BB general games. , B, and C may be selected and switched by random number lottery. In this case, the same operation and effect as those of the above embodiment can be obtained.

[0074]

As described above, according to the present invention, the winning probability table used in the special game is switched and used during the special game. For this reason, the playability of the special game is improved as compared with a conventional gaming machine that changes the winning probability table used in the general game after the end of the special game.

Also, the winning probability varies depending on each game during the special game, and the winning probability changes during the special game. Sex is improved.

Further, since the switching of the winning probability table during the special game is performed by selecting the random number lottery of the machine, it is necessary to change the player's familiarity with the gaming machine and the skill of the pressing operation as in the conventional case. There is no. Therefore, even if the winning probability table is switched and the winning determination is made, the profit is not biased to some players, and the gaming machine does not become a hard-to-use gaming machine.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an external structure of a slot machine according to an embodiment of the present invention.

FIG. 2 is a view showing a state in which a winning line described in a display window of the slot machine shown in FIG. 1 is sequentially activated.

FIG. 3 is a view showing the contents of a BB game played on the slot machine shown in FIG. 1;

FIG. 4 is a block diagram showing a configuration of a control unit for controlling the operation of the slot machine shown in FIG. 1 and peripheral devices thereof.

FIG. 5 is an explanatory view conceptually showing the structure of a winning probability table provided in the slot machine shown in FIG.

6 is a table showing an example of numerical data of each of the winning probability tables at the time of the three-betting game shown in FIG. 5;

FIG. 7 is a flowchart showing an outline of a game processing operation by a control unit shown in FIG. 4;

FIG. 8 is a first flowchart showing a BB game processing operation in the flowchart shown in FIG. 7;

FIG. 9 is a second flowchart showing the BB game processing operation in the flowchart shown in FIG. 7;

FIG. 10 is a third flowchart showing the BB game processing operation in the flowchart shown in FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Slot machine 4,5,6 ... Reel 15 ... Game start lever 16,17,18 ... Stop button switch 19 ... Payout display unit 23 ... Control unit 24 ... ROM 25 ... RAM 26 ... CPU 27 ... Clock circuit 28 ... Random number Setting unit 31 Random number generator 32 Random number sampling circuit L1, L2A, L2B, L3A, L3B ... Winning line

Claims (5)

[Claims] A variable display section for variably displaying a plurality of symbols; a winning mode determining means for determining a winning mode by comparing the extracted random number value with data in a predetermined winning probability table; A stop control unit for controlling a symbol to be stopped and displayed on the variable display unit in accordance with the winning mode determined by the mode determining unit; and a game advantageous to the player when the special game winning mode is determined by the winning mode determining unit. A game processing control unit that executes a special game that can perform a plurality of times, wherein a plurality of the prize probability tables used by the prize mode determination unit during the special game are provided, and the prize mode determination unit includes: A gaming machine wherein the plurality of winning probability tables are selected by random number lottery and used during the special game. 2. The game processing control unit performs, as the special game, a plurality of sets of a normal game during a special game for generating a winning mode of various payouts and a high payout game for giving a high payout, as the special game. A plurality of the prize probability tables used by the prize mode determining means at the time of the medium general game are provided, and the prize mode determining means selects and uses the plurality of the prize probability tables by random number lottery during the special game during the general game. The gaming machine according to claim 1, wherein: 3. The gaming machine according to claim 2, wherein the winning mode determination means selects and switches a plurality of the winning probability tables by random number lottery for each set. 4. The prize mode determining means selects one of the plurality of prize probability tables by random lottery for each one of the special games during the special game or for each of several games of the special games during the special game. The gaming machine according to claim 2, wherein the gaming machine is used by switching. 5. The gaming machine according to claim 1, wherein the gaming machine is a slot machine.