JP2010273779A - Slot machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a slot machine capable of varying a practical winning probability of a bonus prize symbol combination, increasing a technical intervention property in the state of a high winning probability and reducing useless burdens in the state of a low winning probability. <P>SOLUTION: In a normal state, while a BB prize symbol combination is internally won by the probability of 1/15 and the BB prize symbol combination is won by the probability of 1/1.3, since an RB prize symbol combination is internally won by the probability of 1/300 and the RB prize symbol combination is won by the probability of 1/500, when the flag of the BB prize symbol combination is established, the generation probability of a BB state can be made higher than the generation probability of an RB state by technically intervening by a specified stop operation even when the flag of a small prize symbol combination to be pulled in preferentially to the BB prize symbol combination is established. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a slot machine capable of simultaneously winning a plurality of types of special roles.

  In a conventional slot machine, a technique is known in which an internal winning bonus is once stocked and continuously released based on the establishment of a predetermined release condition (see, for example, Patent Document 1).

JP 2002-35220 A

  However, due to problems such as complicated control, it is configured so that the bonus combination that is elected internally can be won only when the winning combination is lost by prioritizing the small role and replay role over the bonus role, An invention has been invented that allows a bonus state to be continuously generated without increasing the bonus combination by increasing the probability of losing after completion, and has already been publicly implemented.

However, if the bonus combination that is won internally at the time of losing does not win, it will not be possible to win until it loses again, and this will give the player a great disadvantage, so in order to solve this problem The symbols must be arranged so that the bonus combination wins regardless of the timing of the stop operation. On the other hand, if it comprises in this way, a pressing will become unnecessary and the interest of a game will be impaired.
In addition, since it is easy to win when the bonus winning probability is high, it is easy to give satisfaction by technical intervention, but in the low state, even if you aim for the winning symbol, the bonus role does not often win, so you can win even if you do not aim It is desirable to configure so as to.

  The present invention has been made in view of the above circumstances, and its purpose is to fluctuate the substantial winning probability of the bonus combination, and to increase the technical intervention in a state where the winning probability is high, and wasteful burden in a state where the winning probability is low. It is an object of the present invention to provide a slot machine that can alleviate the problem.

The slot machine of the present invention has a symbol variation display means provided with a plurality of variation display units for variably displaying a plurality of types of symbols according to a predetermined arrangement in a symbol display area, and for starting a game with a game medium inserted. A game start operation means operated by the player, and an internal lottery for determining an internal winning combination from a plurality of types including a replay role, a priority role, and a special role in accordance with the operation of the game start operation means. An internal lottery means for establishing a flag corresponding to the determined internal winning combination, a stop operation means operated by a player to stop the symbol change display by the symbol change display means, and the stop operation In accordance with the operation of the means, the symbol corresponding to the flag of the combination with the highest priority based on the high priority in the order of the replay combination, the priority combination, and the special combination in advance. A combination of display control means for drawing within a predetermined drawing range and stopping display in the symbol display area, and symbols stopped and displayed on a plurality of winning lines formed in the symbol display area of the symbol variation display means are predetermined. A winning determination means for determining whether or not the winning symbol is, and a profit granting means for granting a player a profit corresponding to the winning symbol when the winning determining means determines that the winning symbol is a winning symbol; Special state generating means for generating a special state advantageous to the player when it is determined by the winning determination means that the winning symbol corresponds to the special combination including the first special combination and the second special combination,
When the special combination flag is established only at the same time as the replay combination flag or only the first priority combination flag, each replay display unit displays the replay so that the special combination cannot be won. The symbols constituting the winning symbol corresponding to the winning combination and the first priority role are always positioned within the drawing range on the winning line, and the winning symbol corresponding to the first special winning combination is configured in each variation display section. When the symbols are arranged so that the symbols are always located within the drawing range on the winning line, and the special combination flag is set simultaneously with the first priority combination and second priority combination flags, The winning symbol corresponding to the second priority role is configured in the first variation display unit among the plurality of variation display units so that the second special combination can be won although one special combination cannot be won. You When the symbol is displayed on the winning line, the symbols constituting the winning symbol corresponding to the second special combination are displayed on the other winning lines, and the winning symbol corresponding to the first priority combination is displayed. The winning symbol corresponding to the second special combination is arranged in the second variation display unit among the plurality of variation display units while arranging the symbols so that the symbol constituting the symbol may not be displayed on any other winning line. When the symbol constituting the symbol is positioned within the drawing range on the winning line, the symbol constituting the winning symbol corresponding to the second priority role may not be positioned within the pulling range on the winning line. When the first stop operation for the plurality of change display units is a stop operation for the first change display unit, the priority order of the second priority combination is set higher than the priority order of the first priority combination. The internal lottery means sets the probability of a game in which neither the replay role flag nor the priority role flag is established after the first special role flag is established with respect to the first special role lottery probability. And a game in which neither the replay role flag nor the priority role flag is satisfied after the second special role flag is established with respect to the winning probability of the second special role, and the first priority role. The internal lottery is executed so as to become smaller than a value obtained by multiplying the occurrence probability of the game in which the flag of the second priority combination and the flag of the second priority role are simultaneously established.

According to the present invention, in addition to changing the winning probability of the special role, in the state where the special role is won with high probability, even if the second special role is won internally, if the specific stop operation is not performed, it is possible to win a prize. Since it is not possible to guess whether or not the special role has been won internally, and by making a technical intervention to win the special role after guessing, the winning probability of the second special role is higher than the winning probability of the first special role Since it can be increased, technical intervention is added and the interest of the game is enhanced.
In addition, if the special role is won only with a low probability, it will be won regardless of the specific stop operation, so that the special stop operation is rarely won and the player is forced to overload the specific stop operation. There is no such thing.

The functional block diagram which shows the electric constitution of the slot machine in one Embodiment of this invention Front view of slot machine Diagram showing the design of reels Diagram showing winning design Diagram showing active line The figure which shows an internal winning combination lottery table The figure which shows the simultaneous winning probability of each BB combination when winning 6 sheets The figure which shows the simultaneous winning probability of each BB combination at the time of winning 1 sheet combination A The figure which shows the simultaneous winning probability of each BB combination at the time of internal winning of 1 sheet combination A + 1 sheet combination B State transition diagram showing changes in gaming state

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 2 schematically shows a front appearance of the slot machine. A display window 2 is provided in front of the slot machine 1, and the player can visually recognize the symbol of the reel 3 (corresponding to symbol variation display means) provided inside through the display window 2 (corresponding to the symbol display area). It has become.

  As shown in FIG. 3, the symbols are the left reel 3a (corresponding to the second variation display unit), the middle reel 3b (corresponding to the second variation display unit), and the right reel 3c (corresponding to the first variation display unit). It is drawn on the circumferential surface, and when the reels 3a to 3c are stopped, symbols are displayed corresponding to the upper, middle and lower stages of the display window 2. As shown in FIG. 5, the display window 2 has a total of four winning lines (two diagonally arranged and two V-shaped) winning lines (indicated by broken lines in FIG. 2). When any of the winning lines is aligned on the active line that is activated by the insertion of medals, a corresponding winning is generated.

  Above the display window 2, a liquid crystal display unit 5 (corresponding to notification means) for displaying various information such as the payout progress state of medals in the bonus state, a lamp unit 6 composed of various lamps, various sound effects, etc. Is provided. Below the display window 2 are provided a MAXBET button 8 for inserting a credit medal, a credit settlement button 9 for settlement of a credit medal, and a medal insertion slot 10 for inserting a medal. A left stop button 12, a middle stop button 13, and a right stop button 14 are provided as stop operation means (corresponding to a game start operation means). On the right side of the display window 2, a payout number display unit 15 for displaying the number of payout medals and a credit display unit 16 for displaying the number of credit medals are provided. Further, a medal payout outlet 17 through which medals are paid out and a tray 18 for receiving medals paid out from the medal payout outlet 17 are provided at the lowermost front portion of the slot machine 1.

  When the slot machine 1 operates the start lever 11 in a series of game start operations, that is, in a state where the player has inserted a medal into the medal slot 10 or a credit medal is inserted by operating the MAXBET button 8, the internal lottery is performed. At the same time, the reels 3a to 3c are started (rotation operation is started). After starting each reel 3a-3c, the slot machine 1 stops each reel 3a-3c according to operation of each stop button 12-14, and complete | finishes 1 game. If the result of the internal lottery is a win, an internal winning flag (a big bonus role (BB role, equivalent to the second special role) flag, a regular bonus role (RB role) corresponding to the internal winning role won by the internal lottery , Corresponding to the first special combination) flag, small combination flag and replay combination flag are set to “1” (established), and stop control including so-called slip control (retraction control) based on the internal winning flag (each reel) 3a to 3c are controlled by a winning symbol or a lost symbol according to the type of the internal winning flag), and the number of medals corresponding to the winning symbol is paid out from the medal payout outlet 17. This is a control capable of drawing and stopping up to 4 symbols on the winning line from the time when 12 to 14 operations are detected.

  FIG. 4 shows a winning symbol. As a winning symbol, BB role A to D (hereinafter referred to as “BB role”) symbol, RB role symbol, 1 sheet role A (corresponding to first priority role) design, 1 sheet role B symbol (second priority) 6 symbols, 14 symbols, 15 symbols, and replay symbols are set.

  FIG. 1 is a functional block diagram showing the electrical configuration of the slot machine 1 described above. The control unit 19 (corresponding to an internal lottery means, a winning determination means, a profit giving means, and a special state generating means) is composed of a microcomputer equipped with a CPU, ROM, RAM, I / O, etc., and the start lever described above 11. Each operation signal is input from the left stop button 12, the middle stop button 13, the right stop button 14, the MAXBET button 8, and the credit settlement button 9.

  The control unit 19 receives an inserted medal detection signal from the inserted medal detection unit 20 that determines whether the medal inserted into the medal insertion slot 10 is authentic and passed, and also receives a setting signal from the set value operation unit 21. In addition, the control unit 19 detects the passage of a reference position piece provided on each of the reel driving units 23 that drive the reel motors 22a to 22c corresponding to the reels 3a to 3c and the reels 3a to 3c. A reference position detection unit 25 for detecting a reference position based on detection signals from the sensors 24a to 24c, a medal payout unit 26 for paying out medals from the medal payout port 17, a payout number display unit 15, a credit display unit 16, and a display control unit 27, an audio output control unit 28 and a lamp control unit 29 are connected. The display control unit 27 controls various display operations in the liquid crystal display unit 5. The audio output control unit 28 controls various sound output operations from the speaker 7. The lamp control unit 29 controls various lighting operations and blinking operations in the lamp unit 6.

  Based on each input signal and the control program stored in the ROM, the control unit 19 has a reel drive unit 23, a medal payout unit 26, a payout number display unit 15, a credit display unit 16, a display control unit 27, and an audio output control unit 28. In addition to controlling the operation of the ramp control unit 29, an out signal (1 pulse output for each insertion of 1 medal or bet of 1 credit medal), a safe signal (1 for each payout of 1 medal or 1 credit medal) (Pulse output), generation of a game signal (1 pulse output for each game start), and RB signal (level signal output during RB state) are controlled.

The slot machine 1 pulls in as follows when two or more types of combination flags are established.
The priority order is set higher in the order of the replay combination, the small combination, and the bonus combination, and the symbols (composition configuration symbols) constituting the winning symbol corresponding to the combination with the higher priority are drawn. However, the left / middle stop button is used when the one-piece combination A, one-piece combination B flag is simultaneously established, or when the BB combination, one-piece combination A, and one-piece combination B flag are established simultaneously. When the first stop operation is performed, the constituent symbol of the single combination A is preferentially drawn, and when the right stop button is first stopped, the constituent symbol of the single combination B is preferentially drawn.

  Here, as can be seen from the reel arrangement in FIG. 3, the configuration symbol of the single-piece combination A is arranged at intervals that can be pulled in regardless of the timing of the stop operation on all reels, whereas The constituent symbols of the combination B are arranged at intervals that cannot be pulled in unless the stop operation is performed at an appropriate timing. Therefore, when the single winning combination A and the single winning combination B are simultaneously won, if the right stop button is first stopped, both of the winning combinations may be missed.

FIG. 10 is a state transition diagram showing a change in the gaming state of the slot machine 1. The gaming state is switched as follows based on the internal winning combination lottery table shown in FIG. 6 and the reel 3 pull-in control described above.
(1) There are five game states: a normal state, a BB combination flag carry-over state, an RB combination flag carry-over state, a BB state (corresponding to a special state), and an RB state (corresponding to a special state).
(2) 1/15 in the normal state (= 1/60, 1/300, 1/600, 1/60, 1/300, 1/600, 1/600, 1/300, 1/150, 1/600 , 1/300, 1/150) with a probability of BB winning combination with one winning combination A, 1 winning combination A + 1 winning combination B, 6 winning combinations, and when winning simultaneously, a BB combination flag carryover state is generated .
(3) In the BB combination flag carryover state, the normal BB operation cannot win the BB combination, but by performing a predetermined stop operation under the condition that the single combination A + 1 combination B is winning simultaneously, BB The winning combination can be won, and when the BB winning combination is won, the BB state is generated.
(4) In the BB state, the 14-piece combination and the 15-piece combination are always won simultaneously, the number of payouts varies depending on the winning method, and a maximum of 55 can be paid out.
(5) In the normal state, when the RB combination is simultaneously won with 1 sheet A with a probability of 1/300, and the RB combination flag is carried out simultaneously, the RB combination flag carryover state is generated.
(6) In the RB combination flag carry-over state, it is deviated with a probability of 1/500. When the player loses, the RB combination can be always won. When the RB combination wins, the RB state is generated.
(7) In the RB state, the 15-piece combination is always won internally, and ends with two wins (two games).

Next, the operation of the above configuration will be described.
<About games under normal conditions>
In the normal state, as shown in the internal winning combination lottery table of FIG. 6, the single winning combination A + 1 winning combination B is won simultaneously with an extremely high probability (= 1 / 1.3). In this case, when the left or middle reels 13a and 13b are stopped first, the one-piece combination A always wins, whereas when the right reel 13c is stopped for the first time, both of the combinations may be missed. Since this is disadvantageous for the player, it is necessary to first stop the left or middle stop buttons 12 and 13 so that a single combination A that cannot be missed wins. As long as such a stop operation is performed, the single player A always wins when the single player A is in the internal winning (simultaneous winner), so the player will aim for the six players with the possibility of missing. Become.

  Now, even if the BB combination is won simultaneously with the single combination A (including the single combination A + 1 combination B), as long as the left or middle stop buttons 12 and 13 are stopped first, the single combination A Won a prize and one medal was paid out and the BB role cannot be won. Therefore, the player plays a game while guessing the internal winning status of the BB role according to the stop appearance, and if the player thinks that the BB role has been won internally, a stop operation for winning the BB role is performed. Do.

The estimation of the internal winning status of the BB role is performed as follows.
<1> When Six-Board Wins From the internal winning combination lottery table of FIG. 6, the simultaneous winning probability of BB Role A and BB Role B in the case of winning 6-sheet winning is 109 / (109 + 109 + 437 + 437 + 1748) = 3.8. Similarly, the probability of simultaneous winning of BB combination C and BB combination D is 15.4% (see FIG. 7). Therefore, when 6 winning combinations are won, the possibility of winning simultaneously with the BB winning combination is relatively high. In this case, since the simultaneous winning probability of the BB combination C and the BB combination D is higher than the BB combination A and the BB combination B, the BB combination C and the BB combination D are aimed.

<2> When a single winning combination is won From the internal winning combination lottery table of FIG. 6, the simultaneous winning probability of BB winning A and BB winning B when winning a single winning combination is (1092 + 218) / (1092 + 218 + 1092 + 218 + 109 + 218 + 109 + 218 + 1311 + 48913) = Similarly, the simultaneous winning probability of BB combination C and BB combination D is 0.6% (see FIG. 8). Therefore, when one winning combination is won, the possibility of simultaneous winning of the BB winning combination is relatively low, so the hitting method is performed without aiming at the BB winning combination.

Now, when the player thinks that the BB combination is won simultaneously, it can be determined whether the BB combination is won simultaneously by the following manner.
The player first stops the left or middle reels 13b and 13c. Then, if the left or middle reels 13a and 13b are stopped for the first time in the case where a single winning combination A and a BB winning combination are won simultaneously, the slot machine 1 The component symbol of the single winning combination A is stopped and displayed on the active line. That is, the constituent symbols of the single-piece combination A are stopped and displayed on the effective lines 1 and 4 passing through the upper stage of the left reel 13b or on the effective lines 2 and 3 passing through the lower stage of the left reel 13b.

  Next, the right stop button 14 is operated to stop at a timing at which the constituent symbol of the single piece A can be drawn on any effective line of the right reel 13c. Then, the slot machine 1 becomes a linear type effective line (effective line 1 or 2) if the BB combination is simultaneously selected, and a non-linear type effective line (effective line 3 or 4) if not simultaneously selected. Stops and displays the winning symbol for the single A combination.

  For example, when the left or middle reels 13a and 13b are first stopped, the composition symbol of the single-piece combination A is stopped and displayed on the effective lines 1 and 4. In this state, if the right stop button 14 is stopped at a timing at which the component symbol of the single piece A can be pulled into either the upper stage or the lower stage of the right reel 13c, if the BB combination is won internally, it will be on the active line 1 (Linear type), if the BB combination is not elected internally, the composition symbol of the single combination A is stopped and displayed on the active line 4 (non-linear type). On the other hand, if the stop operation is performed at a timing that can be drawn only to any one of the active lines, the winning combination line is drawn regardless of whether the BB combination is won internally or not. It cannot be determined from the stop position. Therefore, it is not guaranteed that the stop position of the right reel 13c notifies the internal winning of the BB combination.

(About the game in the BB role carryover state)
In the BB combination flag carryover state in which the BB combination is won internally and the BB combination flag is established, the 1-sheet combination A, the 1-sheet combination A + 1-sheet combination B, the 6-sheet combination, and the replay combination are selected with a predetermined probability. Among them, since the simultaneous winning probability of the single winning combination A + 1 winning combination B is extremely high as 1 / 1.3, the player plays the game as if the single winning combination A + 1 winning combination B was won simultaneously. Even if a single winning combination A + 1 winning combination B is won at the same time, if the left or middle stop button 12, 13 is first stopped, it is possible that the single winning combination A wins and the winning combination BB is won. Since it is impossible, if the player estimates that the BB combination flag has been carried over with the determination method as described above, the player will win the BB combination according to the following procedure.

  The player first stops the right stop button 14. At that time, a stop operation is performed at a timing at which the constituent symbol of the one-piece combination B can be drawn into one side of the effective line of the right reel 13c and the constituent symbol of the BB combination can be drawn into the other. In this case, the type of the winning BB combination is estimated based on the types of winning combinations within several games, and an arbitrary BB combination is aimed. As a result, the slot machine 1 draws the configuration symbol of the BB combination together with the configuration symbol of the single B combination when drawing the configuration symbol of the single combination B preferentially on the effective line of the right reel 13c.

  Next, a stop operation is performed at a timing at which the constituent symbol of the one-piece combination B cannot be drawn on the effective lines of the left and middle reels 13a and 13b, and at the timing at which the constituent symbol of the BB combination can be drawn. Then, since the slot machine 1 draws the structural symbol of the BB combination and stops on the effective lines of the left and middle reels 13a and 13b, the BB combination can be won. In addition, since there is no possibility of winning for the single winning combination A at the time when the constituent symbol of the single winning combination A is not stopped and displayed on the effective line of the right reel 13c, the single winning combination A on the left and middle reels 13a and 13b is also not possible. The configuration symbol of is not prioritized.

When the BB combination wins as described above, the BB state occurs.
<About games in the BB state>
In the BB state, 14 + 15 combinations are always won internally, but when the left or middle stop button 12, 13 is first stopped, the 15-piece composition is given priority and the 15 stop combination is awarded. When 14 is stopped for the first time, the 14-piece combination is given priority and the 14-piece combination is given priority. For this reason, when only 15 winning combinations are won in the BB state, the game ends in 3 games and ends with 42 acquisitions. However, if 14 winning combinations are won only once, the game ends in 4 games, and a maximum of 55 gaming media can be acquired in 1 BB state. In the BB state, one game medium is required for one game. The BB state is terminated by paying out more than 44 sheets, and the normal state occurs.

(When RB role is won internally in normal condition)
In the normal state, when the RB role is elected internally, with a high probability of pulling the small role and replay role that are won internally with priority over the RB role, the loser's (small role and replay role flag was not won internally) ) The RB combination flag carryover state in which the RB combination does not win except for the case is entered. In the RB combination flag carry-over state, the player's game medium decreases. Since the configuration symbol of the RB combination cannot be stopped and displayed simultaneously with the configuration symbol of the one-piece combination B on the right reel 13c, the RB combination cannot be won by the procedure for winning the BB combination as described above. In other words, even if the RB combination flag is established, the RB combination cannot be won except in the case of losing (no combination is won). Note that the constituent symbols of the RB combination are arranged so as to be able to be pulled in regardless of the timing of the stop operation, so that a winning is always made when the player loses. After the RB state generated by winning the RB combination ends, the normal state occurs. Then, the RB state ends with two winnings (two games) and generates a normal state.

Here, the probability of changing from the normal state to the RB state and the BB state will be described.
Probability of becoming RB state = Rubbing probability of RB role × Probability of occurrence of a game in which the RB role wins after establishment of the flag of RB = Probability of occurrence of a game (losing) in which the flag of the replay role and single-player A is not established = 1 / 300 x 1/500
Probability of entering the BB state = Probability of occurrence of a game in which the BB role can be won after the establishment of the BB role flag of the winning probability of the BB role = Probability of occurrence of a game in which the loser and the single-player A flag and the single-player B flag are simultaneously established = 1/15 × (0 + 1 / 1.3)
Therefore, if technical intervention is assumed, the winning probability of the RB role <the winning probability of the BB role is set. Therefore, if the player plays the above-mentioned technical intervention with the BB role flag carry-over state, the probability Therefore, the BB state occurs, which is an advantageous state for the player.

According to such an embodiment, in the normal state, the BB combination is won internally with a probability of 1/15, and the BB combination with a probability of 1 / 1.3 wins, whereas the probability of 1/300 The RB combination is won internally and the RB combination wins with a probability of 1/500. Therefore, when the BB combination flag is established, the small combination flag drawn in preference to the BB combination is established. Even so, by performing technical intervention by a specific stop operation, the probability of occurrence of the BB state can be made higher than the probability of occurrence of the RB state. Therefore, although the BB state is likely to occur continuously in the normal state and the game media can be increased, once the RB combination is won internally, the RB state is unlikely to occur and the game media decreases. A tension can be given to the player.
In addition, while technical intervention is required for winning the BB role, technical intervention is not required for winning the RB role, so in a state where the probability of winning is high, it is possible to enhance the interest of the game by increasing the technical intervention, In the state where the winning probability is low, the burden of pushing can be reduced.

<Other embodiments>
In the above embodiment, since the RB combination cannot be visually recognized even if the RB combination is won internally for the beginner, if the BB combination does not win even after playing for a while, it is determined that the RB combination flag is established. However, when the RB combination is won internally, the player may be notified of this. As a method of notification, in addition to notifying directly by liquid crystal display, voice, etc., it is also notified that a role that can be won internally only at the time of internal winning of the RB role has been won (for example, the 3 role combination is an internal winning at the same time as the RB role) However, if the RB winning combination is not won internally, it is possible to notify that the RB winning flag has been established by winning the three winning combination).

  In the drawings, 1 is a slot machine, 3a is a left reel (second variation display portion), 3b is a middle reel (second variation display portion), 3c is a right reel (first variation display portion), and 5 is a liquid crystal display portion ( Notification means), 11 is a start lever (game start operation means), and 19 is a control unit (internal lottery means, winning determination means, profit granting means, special state generating means).

Claims (1)

A symbol variation display means comprising a plurality of variation display units for variably displaying a plurality of types of symbols according to a predetermined arrangement in the symbol display area;
Game start operation means operated by the player to start the game in a state in which a game medium is inserted;
In accordance with the operation of the game start operation means, an internal lottery for determining an internal winning combination from a plurality of types including a replay role, a priority role, and a special role is executed, and the determined internal winning combination is handled. Internal lottery means for establishing a flag to
A stop operation means operated by a player to stop the display of the variation of the symbol by the symbol variation display means;
In accordance with the operation of the stop operation means, based on a high priority in the order of the replay combination, the priority combination, and the special combination, the symbol corresponding to the flag of the combination with the highest priority is drawn in advance. Display control means for drawing within the range and stopping and displaying in the symbol display area;
Winning determination means for determining whether a combination of symbols stopped and displayed on a plurality of winning lines formed in the symbol display area of the symbol variation display means is a predetermined winning symbol;
Profit granting means for granting a player a profit corresponding to the winning symbol when it is determined that the winning symbol is determined by the winning determining unit;
Special state generating means for generating a special state advantageous to the player when it is determined by the winning determination means that the winning symbol corresponds to the special combination including the first special combination and the second special combination,
When the special combination flag is established only at the same time as the replay combination flag or only the first priority combination flag, each replay display unit displays the replay so that the special combination cannot be won. The symbols constituting the winning symbol corresponding to the winning combination and the first priority role are always positioned within the drawing range on the winning line, and the winning symbol corresponding to the first special winning combination is configured in each variation display section. Arrange the symbols so that the symbols are always within the drawing range on the winning line,
If the special combination flag is established at the same time as the first priority combination and the second priority combination, the first special combination cannot be won, but the second special combination can be selected. In addition, in the first variation display portion of the plurality of variation display portions, when the symbol constituting the winning symbol corresponding to the second priority role is displayed on the winning line, it corresponds to the second special role The symbols constituting the winning symbols to be displayed are displayed on other winning lines, and the symbols constituting the winning symbols corresponding to the first priority role may not be displayed on any other winning lines. While arranging symbols, in the second variation display unit among the plurality of variation display units, when the symbol constituting the winning symbol corresponding to the second special role is located within the drawing range on the winning line, Corresponding to the second priority role The symbols constituting the winning symbol are arranged so that the symbols may not be located within the drawing range on the winning line, and the first stop operation for the plurality of variation display portions is the stop operation for the first variation display portion. Is set higher the priority of the second priority than the priority of the first priority,
The internal lottery means is a value obtained by multiplying the lottery probability of the first special combination by the probability of a game in which neither the replay combination flag nor the priority combination flag is established after the first special combination flag is established. However, after the second special combination flag is established with respect to the winning probability of the second special combination, the game in which neither the replay combination flag nor the priority combination flag is established, the first priority combination flag, and the A slot machine, wherein the internal lottery is executed so as to be smaller than a value multiplied by a probability of occurrence of a game in which a second priority combination flag is established at the same time.

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