JP6050707B2 - Slot machine - Google Patents

Description

  The present invention relates to a slot machine that displays symbols in a variable manner and gives a prize according to a combination of symbols that are stopped and displayed.

  In a conventional slot machine, an AT combination to be awarded when a specific stop operation is performed is set, and when the AT combination is won internally, a specific period for notifying the specific stop operation is provided to increase the winning rate. The so-called AT function to be enhanced is widely known (for example, see Patent Document 1). In an AT machine having an AT function, it is common to perform an AT lottery with a higher probability when a predetermined chance combination is won internally than in the case of a loss. In the normal state prior to winning the AT lottery, the player expects an internal winning of the chance combination and plays.

JP 2001-145723 A

  However, in the conventional AT machine game, the occurrence frequency of the chance combination is always constant, so that there is a problem that the change is scarce and tired easily. It is also difficult to adopt measures that change the chance of winning a chance role because it is prohibited by the Wind Law.

  The present invention has been made in view of the above-mentioned conventional problems. For example, a slot machine that enhances the interest of games by substantially changing the probability of occurrence of a role such as a chance role that becomes a winning opportunity of an AT. The purpose is to provide.

The present invention comprises a start operation means that a player operates to start a game,
In accordance with the operation by the start operation means, lottery means for performing a lottery process for determining an internal winning combination by lottery from a plurality of types of combinations including a specific combination;
Main symbol variation display means for variably displaying a plurality of types of main symbols which are symbols displayed in the main symbol display area in response to an operation by the start operation means;
A winning symbol storage means for storing a plurality of types of winning symbols including a winning symbol comprising a combination of a plurality of types of the main symbols corresponding to the specific combination;
A sub-symbol variation display means for variably displaying a plurality of types of sub-symbols displayed in a sub-symbol display region different from the main symbol display region during the variation display of the main symbol;
Stop operation means operated by a player to stop the main symbol variation display and the sub symbol variation display;
Main symbol display control means for stopping and displaying a main symbol corresponding to an internal winning combination in the main symbol display area when a stop operation is performed by the stop operation means;
A winning determination means for determining a winning by comparing the main symbol stopped and displayed by the main symbol display control means with a winning symbol stored in the winning symbol storage means;
Game value giving means for giving a game value based on a determination result by the winning determination means;
A sub-symbol determining means for determining, at a predetermined ratio, the type of sub-symbol to be stopped and displayed in the sub-symbol display area when the specific combination is won internally;
A sub-symbol display control means for stopping and displaying the type of sub-symbol determined by the sub-symbol determining means when a stop operation is performed by the stop operation means;
Change state generating means for generating a change state for changing the predetermined ratio;
A slot machine comprising: a specific state generating unit that generates a specific state advantageous to a player with a predetermined probability based on a type of the sub symbol determined by the sub symbol determining unit (claim 1). ).

  The slot machine of the present invention variably displays symbols at two locations, a main symbol display area and a sub symbol display area. The winning symbol for the specific role is composed of a plurality of types of main symbols instead of the so-called double eyes of a uniform symbol. Therefore, it is difficult to identify the type of winning combination from the combination of the main symbols stopped and displayed in the main symbol display area. On the other hand, when this specific combination is won internally, the sub-design determined in a predetermined ratio is stopped and displayed in the sub-design display area, so that the player can recognize the sub-design as a winning combination. . In the slot machine of the present invention, by changing the generation ratio of sub-symbols that are not prohibited by the customs law, it is possible to substantially change the probability of a role that triggers the occurrence of a specific state.

  As described above, in the slot machine of the present invention, for example, it is possible to enhance the interest of the game by substantially changing the probability of occurrence of a combination such as a chance combination that is a chance to win an AT.

  The slot machine of the present invention may be a general slot machine that uses coins and medals as a game medium, but it is a fully credit type that plays using points and is awarded points according to winnings. It may be a slot machine.

  The main symbol variation display means and the sub symbol variation display means in the present invention may be mechanical means including a rotating reel having symbols arranged on the outer peripheral surface, and on a display screen of a display such as a liquid crystal display. Software means for variably displaying symbols may be used. One of the main symbol variation display means and the sub symbol variation display means is a means for mechanically displaying the symbols, and the other is a means for displaying the symbols in a software manner. The display method may be different.

FIG. 3 is a front view illustrating an appearance of the slot machine according to the first embodiment. The front view which shows the main symbol display window and sub symbol display part in Example 1. FIG. FIG. 3 is a development view showing a developed arrangement of symbols arranged on the outer periphery of the reel in the first embodiment. Explanatory drawing which shows a winning symbol, profit, and a sub-symbol about each combination in Example 1. FIG. FIG. 3 is a block diagram showing an electrical configuration of the slot machine in the first embodiment. Explanatory drawing which shows the internal winning combination lottery table and 1st sub-design lottery table in Example 1. FIG. Explanatory drawing which shows the 2nd sub-design lottery table in Example 1. FIG. Explanatory drawing which shows the promotion lottery table in Example 1. FIG. Explanatory drawing which shows the fall lottery table in Example 1. FIG. Explanatory drawing which shows the AT lottery table in Example 1. FIG. 3 is a flowchart for explaining control of a main control unit in the first embodiment. FIG. 3 is a flowchart for explaining control of a sub control unit in the first embodiment.

The embodiment of the present invention will be specifically described with reference to the following examples.
Example 1
This example is an example related to the slot machine 1 including a sub-symbol display unit (sub-symbol display area) 25 with a sub reel 251 for production. The contents will be described with reference to FIGS.

  First, the external configuration of the slot machine 1 of this example will be described with reference to FIG. The front surface portion of the slot machine 1 is formed by a front frame 10 in which a large liquid crystal display unit 53 and a substantially rectangular main symbol display window 11 are disposed at a substantially center. An upper panel 12 is formed on the upper side of the liquid crystal display unit 53 arranged in the upper stage. A base 100 that forms the base of the slot machine 1 is formed below the lower main symbol display window 11. On the right side of the liquid crystal display unit 53, there are arranged a grant number display unit 551 for displaying the number of medals (game media having a game value) according to winning, and a credit display unit 552 for displaying the number of credits.

  The base portion 100 is formed so as to protrude relative to the liquid crystal display portion 53 and the main symbol display window 11 that are located behind the player. The base portion 100 has a shelf-like operation surface 14 at the upper end adjacent to the main symbol display window 11, a tray 15 at the lower end, and the operation panel 13 adjacent to the lower side of the operation surface 14. Have.

The operation surface 14 includes a bet button 64 for betting medals on the game, a settlement button 65 for receiving the credited medals to the tray 15, and a medal insertion slot 630 for directly inserting medals. Has been placed.
On the operation panel 13, a start lever 62 (start operation means) for starting the symbol fluctuation of the main reel 21 and a stop button 61 (stop operation means) for stopping the symbol fluctuation are arranged.

  On the upper panel 12, the nameplate 101 on which the model name and character of the slot machine are drawn is arranged in the center, and the lamp unit 56 and the speaker 520 are arranged in two upper and lower stages in the empty space on both sides.

The bet button 64 is a button for betting a specified number of medals on the game from among the credited medals. In a non-bonus state in which a three-game betting game with a prescribed number of three is performed, three medals are bet according to the operation of the bet button 64. In a big bonus state where a two-bet game with a prescribed number of two is played, two medals are bet according to the operation of the bet button 64. However, if the remaining credits are insufficient, all remaining credits (one or two) are bet.
The start lever 62 is an operation lever that is operated by the player to start the game. When the operation of the start lever 62 is detected with a prescribed number of medals bet, the game is started.

  The display screen 530 of the liquid crystal display unit 53 displays various effect images for effecting a game as shown in FIGS. 1 and 2, and the left, middle, and right three portions constituting the sub-symbol display unit 25. Sub reels 251L, C, and R are arranged. Each sub-reel 251 variably displays symbols commonly used in slot machine games such as 7 symbols, plum symbols, bell symbols, cherry symbols, and R symbols corresponding to replays.

  The main symbol display window 11 is a display window including main symbol display areas 110L, C, and R for variably displaying the main symbol. Each main symbol display area 110L, C, R is a main symbol display area for three symbols. In the main symbol display window 11 as a whole, main symbol display areas for nine symbols arranged in a two-dimensional matrix consisting of three rows and three columns are formed. The main symbol display window 11 is formed of a transparent resin plate so that the main symbol can be seen from the player side.

  In the slot machine 1 of the present example in which the liquid crystal display unit 53 has a function as a sub-symbol variation display means, the liquid crystal display unit 53 is enlarged, while the main symbol display window 11 is larger than a general slot machine. Is miniaturized.

  In the main symbol display window 11 in which nine main symbols are arranged in a two-dimensional matrix, a winning line, which is a line-up direction of winning symbols to be awarded, is set. In this example, there is only one winning line 211 in the horizontal horizontal direction.

  On the back side of each main symbol display area 110L, C, R, main reels 21L, C, R constituting the main symbol variation display means 2 (FIG. 5) are respectively arranged. As shown in FIG. 3, the main reels 21L, 21C, 21R are rotary reels in which 21 main symbols are arranged on a cylindrical outer peripheral surface with a substantially constant interval. The main symbols that the main reel 21 of this example displays in a variable manner are geometric figures such as triangles, pentagons, and rhombuses other than the seven symbols corresponding to the jackpot.

  In the slot machine 1, a symbol that does not easily reveal a specific image on the player side is set as the main symbol of the main reel 21. Common symbols such as symbols and bell symbols are set in slot machine games. In this example, by such a symbol setting, the player pays attention to the sub symbol stopped and displayed on the sub symbol display unit 25 so as to advance the game.

  As shown in FIG. 1, the stop button 61 is an operation button for stopping not only the main symbol of the main reel 21 but also the sub symbol that the sub reel 251 variably displays. The stop button 61 in this example corresponds to the left stop button 61L corresponding to the left main reel 21L and the left sub reel 251L, the middle stop button 61C corresponding to the middle main reel 21C and the middle sub reel 251C, the right main reel 21R, and the right sub reel 251R. The right stop button 61R is combined.

In the slot machine 1 of this example, four types of gaming states are set.
(1) Normal state: The most unfavorable gaming state for the player.
(2) AT high-accuracy state: A gaming state in which an AT lottery win is likely to occur and the AT state is highly expected.
(3) AT state: An advantageous gaming state in which the push order for winning a prize is notified when the third combination as an AT combination is won internally. The AT state continues for 50 games.
(4) Big bonus state (BB state): A special state that has a high probability of winning a small role and is most advantageous to the player. Occurs when a big bonus combination wins in a normal state, an AT high-accuracy state, or an AT state.

  In the slot machine 1 of this example, as shown in FIG. 4, a big bonus combination (BB combination) is set in addition to the small combinations from the first combination to the seventh combination. The first combination and the third to seventh combinations are small combinations that generate medals in accordance with winning. The second role is a replay role that generates a replay game in accordance with the winning. The winning symbol in the figure shows a combination of main symbols stopped and displayed by the main reel 21. On the right side, a combination of sub symbols that are stopped and displayed by the sub symbol display unit 25 by the sub reel 251 when each winning combination is shown.

  As for the BB role, the main symbol and the sub symbol are common to the 7 symbols. For the 1st to 7th roles other than the BB role, the winning symbol of the main reel 21 is a combination of disjoint main symbols, while the sub symbol is a doublet such as a cherry symbol or a plum symbol. In the game of the slot machine 1 of this example, it is much easier to confirm a winning or the like in the sub symbol displayed on the sub symbol display unit 25 by the sub reel 251.

  Note that the third role is an AT role, and is awarded when the player presses the stop button 61 in the correct order. The 4th and 5th combinations win regardless of the pressing order, and the bell symbol or cherry symbol is stopped and displayed as the sub symbol. The seventh role is a role that finalizes the AT lottery.

Next, the electrical configuration of the slot machine 1 of this example will be described with reference to FIG. For the main control section 3 that controls the overall operation of the slot machine 1, various operating means such as a start lever 62 and a stop button 61, and a inserted medal that detects a medal inserted from the medal slot 630 (FIG. 1). A detecting unit 63, a reel driving unit 22 that constitutes the main symbol variation display means 2 together with the main reel 21, a reference position detecting unit 66 for detecting the rotational position of the main reel 21, a medal paying unit 54 for paying out medals to the tray 15, and giving Various display units 55 including a number display unit 551 and a credit display unit 552, a set value operation unit 68 for setting set values (six levels of 1 to 6) representing the player's advantageous degree, a signal for outputting a game signal The output unit 57, the sub reel 251 and the sub control unit 51 for controlling the AT are electrically connected.
The sub-control unit 51 is connected to a liquid crystal display unit 53 having a function as a sub-symbol variation display unit, an audio output unit 52 that controls the speaker 520, a lamp unit 56, and the like.

The reel drive unit 22 includes a stepping motor (not shown) that can be controlled in units of steps, and is means for rotating the main reel 21 by the rotational driving force of the stepping motor.
The reference position detector 66 is a detector that detects the passage of the reference position piece for each of the main reels 21L, 21C, 21R and outputs a detection signal.
The set value operation unit 68 is an operation unit for changing the set value of 6 stages with different internal winning probabilities of the big bonus combination in the low probability state corresponding to the normal state using the setting key 680.

  As shown in FIG. 5, the main control unit 3 includes a CPU 31, a ROM 33 / RAM 34 as memory means, an I / O unit 32 as an input / output interface, a random number extracting unit 35 for extracting random numbers for role lottery, And a random number generator 350 for generating. The CPU 31 realizes functions as the following means (1) to (7) by executing a software program read from the ROM 33.

  The sub-control unit 51 includes a CPU 511, a ROM 513 / RAM 514 as memory means, an I / O unit 512 as an input / output interface, a random number extraction unit 515 that extracts an AT lottery random number, and a random number generation unit that generates a random number 515A. The CPU 511 implements functions as the following means (8) to (11) by executing a software program read from the ROM 513.

(1) Game start permitting means 40: means for permitting the start of a game when a prescribed number of medals are bet on the game.
(2) Lottery means 41: means for determining an internal winning combination by internal lottery and establishing an internal winning flag corresponding to the internal winning combination.
(3) Flag control means 410: means for controlling the internal winning flag corresponding to the internal winning combination.
(4) Main symbol display control means 42: means for controlling the main reel 21.
(5) Winning determination means 43: means for determining whether or not the combination of the main symbols stopped along the winning line is a winning symbol.
(6) Game value giving means 44: means for giving a profit in response to winning of a small role or the like.
(7) Bonus state generating means (special state generating means) 45: means for generating a big bonus state in response to winning of a big bonus combination (BB combination).

(8) Sub-symbol determining means 46: means for determining the type of sub-symbol to be stopped and displayed on each sub-reel 251 of the sub-symbol display unit 25 at a predetermined ratio.
(9) Sub-symbol display control means 47: means for variably displaying sub-symbols on the sub reel 251.
(10) Change state generation means 48: AT high-accuracy state (change state) that changes a predetermined ratio when determining the type of sub-symbol when the 4th to 7th roles which are specific roles are won internally Means to generate.
(11) Specific state generation means 49: Performs an AT lottery with a predetermined probability based on the type of sub-symbol determined by the sub-symbol determination means 46, and attains an AT state (specific that is advantageous to the player according to the AT win) Means to generate a state). When AT is won, an AT state is generated within 32 games.

  The ROM 33 of the main control unit 3 includes an internal winning combination lottery table (FIG. 6) used by the lottery means 41 for lottery of the internal winning combination, and a reel control table (not shown) used by the main symbol display control means 42 for stop control of the main reel 21. ) And a function as a winning symbol storage means 431 for storing a winning symbol (combination of main symbols) of the main reel 21 is realized.

  In the ROM 513 of the sub control unit 51, the first sub symbol lottery table (FIG. 6) and the second sub symbol lottery table (FIG. 7) used by the sub symbol determining means 46 to determine the sub symbol, the AT high from the normal state. A promotion lottery table (FIG. 8) used for the promotion lottery to the certain state, a fall lottery table (FIG. 9) used for the fall lottery from the AT high certainty state to the normal state, and an AT lottery table (FIG. 10) used for the AT lottery are stored. doing.

The reel control table (not shown) is a data table in which stop positions that can be stopped on the winning line 211 are defined.
The internal winning combination lottery table illustrated on the left side in FIG. 6 is a data table in which the range of winning random numbers for each combination is defined among the random numbers for winning lottery of 0 to 65535. As the internal winning combination lottery table, there are a table applied in a state other than the big bonus state and a table (not shown) applied in the big bonus state. The internal winning combination lottery table is prepared for each set value, and the internal winning probability of the big bonus combination is different. The winning random numbers of the third role are classified into four types of pressing order: middle → right → left, middle → left → right, right → middle → left, right → left → middle. When the third winning combination is won, the pressing order is also determined according to the random number for winning the lottery at that time.

  The first sub symbol lottery table illustrated on the right side in FIG. 6 is a table for setting a sub symbol for each range of the random numbers for role lottery. For example, for the big bonus combination, seven symbols similar to the main symbol are set as the sub symbol, while for the first combination, a plum symbol different from the main symbol is set as the sub symbol.

  In the first sub-design lottery table, the random numbers for winning lottery of 10,000 to 39999 which are the winning random numbers of the third role are middle → right → left, middle → left → right, right → middle → left, right → left → middle. There are four types of push order. This classification is exactly the same as the classification of each push order in the internal winning combination lottery table. According to such a configuration, it becomes possible for the main control unit 3 and the sub-control unit 51 to share the pressing order when the third combination is won internally.

  In the first sub-symbol lottery table, the sub-symbol corresponding to the random numbers for the role lottery of 40000 to 48899 is not set. The sub symbols corresponding to the random numbers for the lottery in this range corresponding to the fourth to sixth roles are set not in the first sub symbol lottery table but in the second sub symbol lottery table of FIG. As the second sub-design lottery table, a normal state table and an AT high-accuracy state table are prepared. The main difference between the two types of tables is that the probability of setting a cherry symbol that triggers the AT lottery is significantly higher in the AT high-accuracy state table (1/109 → 1). /14.73).

The promotion lottery table of FIG. 8 is a lottery table applied to the promotion lottery from the normal state to the AT highly accurate state. In the promotion lottery table, among the random numbers for role lottery of 0 to 65535, a winning random number and a lost random number for promotion lottery are defined.
The falling lottery table in FIG. 9 is a lottery table applied to the falling lottery from the AT high-accuracy state to the normal state. In the falling lottery table, among the random numbers for role lottery of 0 to 65535, winning random numbers and lost random numbers for falling lotteries are defined.

  The AT lottery table in FIG. 10 is a table in which a winning random number and a lost random number of the AT lottery are defined from 0 to 65535 random numbers for AT lottery. In the AT lottery table, a winning random number and a lost random number are defined for the case where the plum symbol is stopped and displayed on the sub symbol display unit 25 and the case where the cherry symbol is stopped and displayed, respectively. The cherry symbols corresponding to the seventh role are not subject to this AT lottery table. This is because, when winning with a cherry symbol corresponding to the seventh role, the AT lottery is won with a probability of 100%.

  The plum symbol that becomes an AT lottery opportunity (chance combination) is a sub symbol whose probability does not change depending on whether it is in the normal state or the AT highly accurate state. On the other hand, the cherry symbol that becomes a chance combination is a sub-graphic whose probability varies greatly depending on whether it is the normal state or the AT high-accuracy state.

  For the operation of the slot machine 1 of the present example configured as described above, refer to the flowchart showing the control flow of the main control unit 3 in FIG. 11 and the flowchart showing the control flow of the sub-control unit 51 in FIG. I will explain.

  The main control unit 3 permits the start of the game when a bet (betting) of a prescribed number of medals is detected by direct insertion of medals or operation of the bet button 64. When the start of the game is permitted, the start lever 62 can be operated effectively and the game can be started.

  When the main control unit 3 receives a valid start operation of the start lever 62 (S101: YES), the main control unit 3 extracts a random number for winning lottery from random numbers (0 to 65535) generated by the random number generation unit 350 (S102). . The main control unit 3 collates the extracted lottery random numbers against the winning random numbers of the respective roles defined in the internal winning combination lottery table, and determines the internal winning combination (S103).

  When the main control unit 3 determines any combination as an internal winning combination, the main control unit 3 switches the internal winning flag corresponding to the internal winning combination to an ON state. The internal winning flags of other combinations other than the bonus winning combination are reset to the off state (zero) by the start of the next game regardless of whether or not a winning is made in the game in which the internal winning flag is established for the first time. Therefore, if each combination other than the bonus combination is not won in the internal winning game, all will be missed. On the other hand, with respect to the bonus combination flag which is an internal winning flag of the bonus combination, the establishment state (ON state) of the internal winning flag is sequentially carried over to the next game until winning, and is reset to the OFF state according to winning. . With such a control, a bonus combination can always be won once an internal winning is made.

  Following the internal lottery, the main control unit 3 starts symbol variation of the main reel 21 (S104), and outputs a random number for lottery applied to the internal lottery to the sub-control unit 51 (S105). . The main control unit 3 inputs a control pulse to the stepping motor constituting the reel driving unit 22, and rotates the main reel 21 by rotating the stepping motor by one step for each pulse. The main control unit 3 counts the number of control pulses input to the reel driving unit 22, that is, the number of steps rotated by the stepping motor. Each time the detection signal of the reference position piece of each main reel 21 is fetched, the number of steps is reset to zero, and the number of steps generated after the latest detection signal is counted.

  The main control unit 3 performs so-called pull-in control in which symbols within a predetermined pull-in range determined by rules (rules for game machine authorization, type verification, etc.) are stopped on the winning line. In this example, a range corresponding to 4 symbols is set as the pull-in range. When the main control unit 3 detects a stop operation signal corresponding to the operation of the stop button 61 (S106: YES), the main control unit 3 samples the number of steps of the corresponding main reel 21, and a stop position at which the stop can be stopped on the winning line. The stop position is determined by checking the number of steps against the specified reel control table. The main control unit 3 pulls the symbol corresponding to the internal winning flag to the stop position and stops the main reel 21 (S107). Thus, the main control unit 3 stops and displays the main symbol corresponding to the internal winning combination every time a stop operation is performed, and outputs a stop operation signal to the sub-control unit 51 (S108).

  When all the main reels 21 are stopped (S109: YES), the main control unit 3 stops and displays the symbols along the winning line 211 set so as to cross the three main reels 21L, C, and R. It is determined whether or not the combination is a predetermined winning symbol (S110). Specifically, the main control unit 3 obtains the type of symbols stopped on the winning line 211 based on the number of steps of the stepping motor (reel drive unit 22) of each stopped main reel 21L, C, R. It is determined whether or not a winning combination is established for the combination of symbols.

  When the main control unit 3 determines that any winning combination is established (S110: YES), in order to give a profit corresponding to the winning combination, a medal paying signal instructing the medal paying out is given to the medal paying unit 54. (S111). For example, when the third combination is a winning combination, eight medals are awarded (see FIG. 4). When the big bonus combination wins, the main control unit 3 generates a big bonus state as the profit.

  As shown in FIG. 12, when the sub-control unit 51 receives a random number for winning a lottery from the main control unit 3 (S201: YES), the sub-control is determined by comparing the random number for winning a lottery with the first sub-design lottery table. (S202). When the fourth to sixth winning combinations are won internally (S203: YES), the second sub-design lottery table is selected according to whether it is in the normal state or the AT high-accuracy state and collated with that table. Thus, the sub-design is determined (S204). On the other hand, in the case of an internal winning of a role other than the fourth to sixth roles (S203: NO), the process of step S204 is bypassed.

  The sub-control unit 51 starts sub-symbol variation display on the sub-reel 251 (S205), and executes a transition lottery between the normal state and the AT high-accuracy state. If the gaming state at that time is the normal state (S206: YES), the sub-control unit 51 determines whether or not the promotion lottery is successful by checking the combination lottery random number against the promotion lottery table (S207). An AT high-accuracy state is generated (S208 → S209). If the gaming state at that time is the AT high probability state (S206: NO), the sub-control unit 51 determines whether the falling lottery is successful or not by checking the combination lottery random number against the falling lottery table (S227). Then, it falls to the normal state (S228 → S229).

  When the stop operation signal is input (S210), the sub control unit 51 determines whether or not it is the first stop operation signal for the first time (S211). If it is the first stop operation signal (S211: YES), the sub-control unit 51 extracts an AT lottery random number (S212), and the AT lottery random number is selected according to the type of sub symbol (plum symbol or cherry symbol). Whether the AT lottery is successful or not is determined by checking with the AT lottery table (S213). Further, the sub-control unit 51 determines and executes an effect based on the AT lottery random number and the AT result, and then stops and displays the sub-design of the sub-reel 251 corresponding to the stop button 61 that has been operated to stop ( S214).

  The sub-control unit 51 generates an AT state (specific state) within 32 games when the AT lottery is won. In the AT state, when the third role as the AT role is won internally, the sub-control unit 51 performs the notification effect of the push order for winning the AT role. The AT state continues for 50 games and ends when 50 games are completed.

An operation flow of the slot machine 1 under the control of the main control unit 3 and the sub control unit 51 as described above will be outlined.
When an effective start operation of the start lever 62 is performed, an internal winning combination is determined on the main control unit 3 side, and symbol variation of the main reel 21 is started. The random number for the lottery used for the internal lottery is output from the main control unit 3 to the sub-control unit 51. On the side of the sub-control unit 51 to which the random number for lottery is input, the random number for lottery is collated with the first or second sub-design lottery table to determine the sub-design.

  On the sub-control unit 51 side, a promotion lottery or a falling lottery is further executed. If the game state at that time is a normal state, the random numbers for the role lottery are checked against the promotion lottery table to determine whether the promotion lottery is successful, and if the AT is highly accurate, the random numbers for the lottery match against the falling lottery table Thus, whether or not the falling lottery is successful is determined. When the promotion lottery or the falling lottery is won, the state transition between the normal state and the AT high probability state is executed.

  When the stop button 61 is operated, on the main control unit 3 side, the main symbol corresponding to the internal winning combination is drawn and displayed, and a stop operation signal corresponding to the operation of the stop button 61 is output to the sub-control unit 51. Is output toward. On the side of the sub-control unit 51 that has input the first stop operation signal, an AT lottery random number is extracted, and the AT lottery random number is checked against an AT lottery table corresponding to the type of sub symbol (plum symbol or cherry symbol). Then, whether or not the AT lottery is successful is determined.

In the slot machine 1, when the seventh role or the third role is won internally, a special process is executed.
When the seventh winning combination is won internally, the main control unit 3 performs a so-called freeze effect that starts changing the main reel 21 after 5 seconds have passed since the random number for lottery selection is output to the sub-control unit 51. Is done. At the time of internal winning of the seventh role, AT winning is confirmed, so this freeze effect is a notification of AT winning. The random number for lottery “48900” is a winning random number for the seventh role in the main control unit 3 and a winning random number for AT lottery in the sub-control unit 51. Therefore, the freeze effect as described above that is executed by the main control unit 3 in conjunction with the AT winning is possible.

  When the third winning combination is won internally, the push order for winning the internal winning combination is determined by lottery. If the AT state is occurring, notification of the pressing order is executed under the control of the sub-control unit 51. When the player's stop order is actually correct, the winning symbol corresponding to the internal winning combination will be stopped and the winning symbol will be displayed. When the pressing sequence is incorrect, the lost symbols other than the winning symbol will be stopped. Is done.

  The slot machine 1 of the present example configured as described above is a slot machine that changes symbols on both the main reel 21 and the sub reel 251, and the winning symbol that is stopped and displayed on the main reel 21 corresponds to which role. On the other hand, the sub reel 251 displays a plurality of types of distinguishable symbols (for example, bell symbols and cherry symbols) for the same combination.

  In the game of the slot machine 1, since the player recognizes the sub symbol stopped on the sub reel 251 as the winning combination, the probability of the symbol can be substantially changed by changing the probability of the symbol displayed on the sub reel 251. Can do. In the slot machine 1 of this example that executes AT lottery based on the sub-reel 251 sub-design, it is possible to change the probability of the AT lottery (chance role), and the interest of the game is enhanced. . In the slot machine 1 of this example, since the extraction timing of the random numbers for AT lottery is different from the extraction timing of the random numbers for lottery, the possibility of regularity in the type of internal winning combination and the AT winning probability is reduced. ing.

In addition, it can replace with the structure of the slot machine 1 of this example, and can also employ | adopt the following structures. In this example, the AT lottery random number extraction timing is set during the first stop operation. The AT lottery random number extraction timing is not limited to this timing, and may be, for example, the second and third stop operations, or the next game start operation. Alternatively, the AT lottery random number may be extracted at the timing when the sub-control unit 51 acquires the role lottery random number. In this case, if the period of the random number counter for the lottery for lottery and the period of the random number counter for the random number for AT lottery are synchronized, there is a possibility that regularity may occur in the internal winning combination and the AT winning probability. It is good to make it.
The AT lottery in this example is an initial AT lottery for determining whether or not to generate an AT state. In addition to this AT lottery, it is also possible to execute a lottery by adding the number of continuous games in the AT state.

  In this example, the winning probability in a specific state is constant according to the type of sub-symbol. As long as the variation range of the winning probability in the specific state according to the type of the sub symbol is smaller than the variation range of the internal winning probability of the specific role, the winning probability in the specific state may change according to the type of the sub symbol. In addition, if the winning probability in a specific state is substantially constant, the effect of the present invention is particularly high.

  As described above, specific examples of the present invention have been described in detail as in the embodiments. However, these specific examples merely disclose an example of the technology included in the scope of claims. Needless to say, the scope of the claims should not be construed as limited by the configuration, numerical values, or the like of the specific examples. The scope of the claims includes techniques in which the specific examples are variously modified, changed, or appropriately combined using known techniques and knowledge of those skilled in the art.

DESCRIPTION OF SYMBOLS 1 Slot machine 11 Main symbol display window 110 Main symbol display area 2 Main symbol fluctuation display means 21 Main reel 25 Sub symbol display part (sub symbol display area)
251 Sub reel 3 Main control unit 35 Random number extraction unit 40 Game start permission means 41 Lottery means (special lottery means)
410 Flag control means 42 Main symbol display control means 43 Winning determination means 431 Winning symbol storage means 44 Game value giving means 45 Bonus state generating means (special state generating means)
46 Sub symbol determining means 47 Sub symbol display control means 48 Change state generating means 49 Specific state generating means 51 Sub control section 53 Liquid crystal display section 61 Stop button (stop operation means)
62 Start lever (starting operation means)
64 bet buttons

Claims (1)

A start operation means operated by the player to start the game;
In accordance with the operation by the start operation means, lottery means for performing a lottery process for determining an internal winning combination by lottery from a plurality of types of combinations including a specific combination;
Main symbol variation display means for variably displaying a plurality of types of main symbols which are symbols displayed in the main symbol display area in response to an operation by the start operation means;
A winning symbol storage means for storing a plurality of types of winning symbols including a winning symbol comprising a combination of a plurality of types of the main symbols corresponding to the specific combination;
A sub-symbol variation display means for variably displaying a plurality of types of sub-symbols displayed in a sub-symbol display region different from the main symbol display region during the variation display of the main symbol;
Stop operation means operated by a player to stop the main symbol variation display and the sub symbol variation display;
Main symbol display control means for stopping and displaying a main symbol corresponding to an internal winning combination in the main symbol display area when a stop operation is performed by the stop operation means;
A winning determination means for determining a winning by comparing the main symbol stopped and displayed by the main symbol display control means with a winning symbol stored in the winning symbol storage means;
Game value giving means for giving a game value based on a determination result by the winning determination means;
A sub-symbol determining means for determining, at a predetermined ratio, the type of sub-symbol to be stopped and displayed in the sub-symbol display area when the specific combination is won internally;
A sub-symbol display control means for stopping and displaying the type of sub-symbol determined by the sub-symbol determining means when a stop operation is performed by the stop operation means;
Change state generating means for generating a change state for changing the predetermined ratio;
A slot machine comprising: a specific state generating means for generating a specific state advantageous to a player with a predetermined probability based on the type of the sub symbol determined by the sub symbol determining means.

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