JP2010104665A - Slot machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance the amusement of a game after a BB (big bonus) is internally won during an RT (replay time). <P>SOLUTION: In the slot machine 1, the internally lottery winning probability is set so that the ball put-out rate during the RT is higher than the average ball put-out rate in all the game states. When a BB1 is established during the RT, the RT is terminated. Meanwhile, when a BB2 or BB3 is established, the RT is continued. In this way, a player may be provided with both situations in which establishment of the BB is advantageous to the player and in which establishment of the BB is disadvantageous to the player according to the kind of the internally won BB or the number of remaining game rounds when the BB is internally won. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is configured to generate a specific state advantageous to a player based on a predetermined condition, and to end the specific state when the number of games after the specific state occurs reaches a predetermined number of times. About the slot machine.

In a conventional slot machine, it is well known that when a predetermined condition is satisfied, a transition is made to a replay time (RT) in which the replay lottery probability is high. There are also various RT start conditions for starting RT and RT end conditions for ending RT. For example, RT start conditions include the end of a bonus state and the winning of a specific small role. This includes the internal winning of bonuses, winning bonuses, and using a predetermined number of games. For example, there is a model having a function (hereinafter referred to as a complete running RT function) that does not end RT until a predetermined number of games are consumed or the bonus is won even if a bonus is won internally during RT (for example, Patent Document 1).
JP 2008-206582 A

  By the way, in general, the payout rate (number of payouts / number of inputs) in RT (including ART that activates AT at the same time) should be set to be equal to or higher than the average payout rate (number of payouts / number of inputs) in all gaming states. Because there are many, it will be in a state to wait for the bonus winning while gradually increasing the game media at hand, but when the completion of RT is set as the end condition of RT and the winning is set instead of the internal winning of the bonus (Models with the above-mentioned complete-run type RT function) If the bonus is won internally during RT, the bonus will be avoided and RT will continue until the predetermined number of games is consumed. It is advantageous for the profit.

  However, it is always advantageous to use the predetermined number of games regardless of whether or not the bonus is won internally, so if the bonus is won internally and no other bonus lottery is performed during RT, it will simply remain. A game that only consumes the number of games, and the degree of advantage of RT is extremely small compared to the degree of advantage of the bonus state, so that the player feels bothered by intentionally avoiding the bonus winning and extending the life of RT. There are many people. In addition, since the game media that a player can obtain with RT and bonus are generally constant, it is not sufficient to enhance the interest of the game.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a slot machine that can enhance the interest of a game even after a special role is won internally during a specific state. .

  According to the first aspect of the present invention, a symbol variation display means for variably displaying a plurality of types of symbols in a symbol display area according to a predetermined arrangement, and a player operating the game media to be started in a state where a game medium is inserted. And a game start operation means, and when the game start operation means is operated, an internal lottery is performed for determining an internal winning combination from a plurality of types of winning combinations, and an internal winning corresponding to the determined internal winning combination is executed. An internal lottery means for establishing a flag, a stop operation means operated by a player to stop the display of symbol fluctuations by the symbol fluctuation display means, and the internal winning flag when the stop operation means is operated. Display control means for drawing a corresponding symbol within a predetermined pull-in range and stopping and displaying it in the symbol display area, and stopped and displayed in the symbol display area of the symbol variation display means A winning determination means for determining whether or not a symbol is a predetermined winning symbol, and a profit grant that gives a player a profit corresponding to the winning symbol when the winning determination means determines that the symbol is a winning symbol And a specific state generating means for generating a specific state advantageous to the player based on a predetermined condition and ending the specific state when the number of games after the specific state is generated reaches a predetermined number of times A special state in which the lottery probability of at least one combination is changed, and is generated when the winning determination means determines that the winning symbol corresponds to the predetermined first special combination, and the predetermined first end condition The first special state that ends when the award is achieved, and when the winning determination means determines that the winning symbol corresponding to the predetermined second special combination is achieved, and the predetermined second ending condition is achieved. In case Special state generating means capable of generating a plurality of types of special states including a second special state to be completed, wherein the internal lottery means determines the average payout rate in all gaming states in the specific game state. When the first special state generating unit generates the first special state in the case where the specific state is generated, the specific state generating unit performs the specific state. On the other hand, when the second special state generating means generates the second special state, the specific state is continued.

  According to a second aspect of the present invention, the internal lottery means executes a lottery for a predetermined specific state ending role when the second special state is generated, and the specific state generating means is the second special state When a state has occurred, the internal lottery means determines that the specific state ending combination is determined as an internal winning combination, or the winning determination means determines that the winning symbol corresponds to the specific state ending combination In some cases, the specific state is terminated.

  The invention described in claim 3 is generated when the special state generating means is determined to be a winning symbol corresponding to a predetermined third special combination by the winning determining means and can be achieved within the predetermined number of times. A third special state that is terminated when a predetermined third termination condition is achieved, and the internal lottery means determines that the second special state is in a state where the third special state is occurring. The lottery of a predetermined specific state end combination is executed with a lottery probability different from that occurring, and the specific state generating means is configured such that, when the specific state is generated, the third special state generating means is When the third special state is generated, the specific state is continued.

  The invention described in claim 4 is provided with notification effect execution means for executing different notification effects depending on the winning combination in the state where the first special combination or the second special combination is winning internally, The winning symbol corresponding to the first special combination and the winning symbol corresponding to the second special combination are the same.

  According to the invention described in claim 1, when the internal lottery is executed so that the payout rate in the specific state exceeds the average payout rate in all game states, and a specific state advantageous to the player is generated In the first special state that occurs when the winning determination means determines that the winning symbol corresponds to the predetermined first special combination and ends when the predetermined first end condition is achieved, The specific state is ended, and on the other hand, it occurs when the winning determination means determines that the winning symbol corresponds to the predetermined second special combination and ends when the predetermined second ending condition is achieved. Since the specific state is continued when the second special state occurs, even if the special role is won internally, the type of the special role that is won internally and the number of games remaining in the specific state I won the prize accordingly There can be provided a status a disadvantage the situation is advantageous for the player, it is possible to enhance the interest of even the game after the special role in the specific state is internally won. In addition, when the special state is ended by winning the special role, it is limited to a small amount of game media obtained in the specific state and game media obtained in one special state. Can also be solved.

  According to the second aspect of the present invention, when the second special state occurs, when the specific state ending combination is determined as the internal winning combination by the internal lottery means, or the specific state ending combination is determined by the winning determination means. When it is determined that the winning symbol corresponding to is, the specific state is terminated, so that it is more difficult to determine whether or not it is better to win the second special role won internally. And can provide deep gameplay.

  According to the third aspect of the present invention, when the third special state occurs, the lottery of the predetermined specific state end role is executed with a different lottery probability than when the second special state occurs. In the case where the specific state has occurred, when the third special state generating means generates the third special state, the specific state is continued, so that more complicated game play can be provided.

  According to the invention described in claim 4, since the winning symbol corresponding to the first special combination and the winning symbol corresponding to the second special combination are the same, it is possible to make any special using the reel control. Although it is difficult to determine whether the combination is won internally, in the state where the first special combination or the second special combination is selected internally, different notification effects are executed depending on the combination won internally. Therefore, it is possible to provide a game property for notifying which special role is won internally by the notification effect. If it is possible to determine which special role is won internally using reel control, not only will there be a large profit difference due to the difference in the skill of the player, but it will also be determined accurately in a short time However, it is difficult to accurately determine in a short time by executing different notification effects depending on the winning combination in this way. Can be increased.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 schematically shows the 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 symbols on the reel 3 (the symbol variation display means in the present invention) provided therein through the display window 2.

  As shown in FIG. 3, the symbols are drawn on the circumferential surfaces of the left reel 3a, the middle reel 3b, and the right reel 3c. When the reels 3a to 3c are stopped, the upper, middle, and A symbol is displayed corresponding to the lower row. The display window 2 is provided with a total of five winning lines (three horizontal lines corresponding to the upper, middle, and lower stages and two diagonally arranged) (shown by broken lines in FIG. 1). An active line display unit 4 for displaying the activated pay line is provided on the side of the, and a corresponding win is generated when the winning symbols are aligned on any of the pay lines. .

  Above the display window 2, a liquid crystal display unit 5 (notification effect execution means in the present invention) for displaying various information such as a payout progress state of medals in a bonus state, a lamp unit 6 composed of various lamps, A speaker 7 is provided for outputting the sound effect of the above. 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. (Game start operation means in the present invention), left stop button 12 (stop operation means in the present invention), middle stop button 13 (stop operation means in the present invention), and right stop button 14 (stop operation in the present invention) 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). And 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 winning, an internal winning flag (big bonus (BB) flag, regular bonus (RB) flag, small role flag, and replay flag corresponding to the internal winning combination won by the internal lottery) ) Is set to “1” (established), and based on the internal winning flag, stop control including so-called slip control (retraction control) (the reels 3 a to 3 c are awarded symbols or lost according to the type of the internal winning flag). Control to stop at the symbol), and the number of medals corresponding to the winning symbol is paid out from the medal payout opening 17. The pull-in control is a control capable of drawing and stopping up to four symbols on the winning line from when the operation of each of the stop buttons 12 to 14 is detected.

  As the winning symbols, as shown in FIG. 4, a BB symbol, an RB symbol, a small role symbol, and a replay symbol are set. As the BB symbol, three types of a first BB (BB1) symbol, a second BB (BB2) symbol, and a third BB (BB3) symbol are set. As the RB symbol, two types of symbols, a second RB (RB2) symbol and a third RB (RB3) symbol are set. As a small role design, an orange symbol, a first 12-card role (12-card role 1) symbol, a second 12-card role (12-card role 2) symbol, a third 12-card role (12-card role 3) symbol, Seven types of bell designs, watermelon designs and cherry designs are set.

  In this case, BB1 is the first special role in the present invention, and the BB1 state is the first special state in the present invention. BB2 is the second special role in the present invention, and the BB2 state is the second special state in the present invention. BB3 is the third special role in the present invention, and the BB3 state is the third special state in the present invention. Further, the replay time (RT) state in which the replay lottery probability is changed is a specific state in the present invention. For RB2 and RB3, lottery is performed only in the BB2 state or the BB3 state. As will be described later, since RB1 is continuously generated in the BB1 state without specific symbols being aligned, there is no winning symbol corresponding to RB1.

  In the symbol arrangement shown in FIG. 3 above, when the BB wins an internal winning, the player will determine the type of the BB that was won internally depending on which symbol is actually drawn on the winning line. BB1, BB2, and BB3 are different from each other only in the right column, and the symbols are close to each other, so that it is difficult to discriminate them. In particular, when the right reel 3c is finally stopped, even if the symbol corresponding to BB2 or BB3 is aimed, if the winning combination actually won is BB1, the player will win BB1.

  FIG. 2 is a functional block diagram showing the electrical configuration of the slot machine 1 described above. The control unit 19 (internal lottery means, display control means, winning determination means, profit granting means, specific status generating means, special status generating means) in the present invention is a micro comprising a CPU, ROM, RAM, I / O, and the like. Each operation signal is input from the start lever 11, the left stop button 12, the middle stop button 13, the right stop button 14, the MAXBET button 8, and the credit check button 9.

  In addition, the control unit 19 inputs an inserted medal detection signal from the inserted medal detection unit 20 that determines the authenticity and passage of the medal inserted into the medal insertion slot 10, and inputs 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 that detects a reference position based on detection signals from the sensors 24a to 24c, a medal payout unit 26 that pays out medals from the medal payout port 17, the above-described effective line display unit 4, a payout number display unit 15, and A credit display unit 16 is connected.

  Further, the control unit 19 is connected to a display control unit 27, a sound output control unit 28, and a lamp control unit 29. The display control unit 27 controls various display operations in the liquid crystal display unit 5 described above. The sound output control unit 28 controls various sound output operations from the speaker 20 described above. The lamp control unit 29 controls various lighting operations and blinking operations in the lamp unit 6 described above.

  In this case, the control part 19 is based on each input signal and the control program memorize | stored in ROM, the reel drive part 23, the medal payout part 26, the effective line display part 4, the payout number display part 15, and the credit display part 16 In addition to controlling the operations of the display control unit 27, the sound output control unit 28, and the lamp control unit 29, an out signal (1 pulse output for every insertion of one medal or one credit medal bet) and a safe signal (for one medal) 1 pulse output for each payout or 1 credit medal payout), game signal (1 pulse output for each game start), BB signal (level signal output during BB state) and RB signal (level signal output during RB state) ) Generation.

  As shown in FIG. 5, the gaming state of the slot machine 1 includes a normal state, a normal carryover state, a normal RT state, a normal RT carryover state, a BB1 state, a BB2 state, a BB3 state, a BB2RT state, a BB3RT state, and RB1. State, RB2 state, RB3 state, RB2RT state, and RB3RT state.

  The normal state is a state in which an internal lottery of BB (BB1, BB2, BB3) is executed. In the case of winning a game in which BB1 is won in BB1, the game shifts to the BB1 state and is a game in which BB2 is won internally. When the player wins BB2, the game shifts to the BB2 state, and when the player wins BB3 in the game that is won internally, the game shifts to the BB3 state. The normal carry-over state is a state in which the internal winning of BB is carried over, and when a game is carried over to the internal winning of BB1, the game moves to the BB1 state and wins the internal winning of BB2. If the player wins BB2, the game shifts to the BB2 state. If the player wins BB3 in a game that carries over the internal winning of BB3, the game shifts to the BB3 state.

  The normal RT state is a state in which an internal lottery of replay is executed with a probability of 1/3 and an internal lottery of BB is executed. When a game is won in BB1, the game shifts to the BB1 state when winning BB1. If you finish RT and win BB2 in a game that has been won internally by BB2, go to BB2RT state and continue RT, and if you win BB3 in a game that has been won internally by BB3, go to BB3RT state. Continue RT. The normal RT carryover state is a state where the internal winning of BB is carried over, the internal lottery of replay is executed with a probability of 1/3 and the internal lottery of BB is executed, and the internal winning of BB1 is carried over. If you win BB1 in a game that is in progress, transition to BB1 state and end RT, and if you win BB2 in a game that carries over the internal winning of BB2, transition to BB2RT state and continue RT, BB3 If the game that has won the internal winning of BB3 is won, the game moves to the BB3RT state and RT is continued. In addition, when 12 winning combinations are won internally during RT, the liquid crystal display unit 5 performs an AT effect to notify the winning symbol of the 12 winning combinations.

  The BB1 state is a state that occurs on condition that the BB1 is won in the normal state, the normal carryover state, the normal RT state, or the normal RT carryover state. The RB1 state is generated simultaneously with the occurrence, and the BB1 state is terminated. Even if the RB1 state ends, the RB1 state is generated again immediately to generate the RB1 continuously. When the BB1 state is terminated, the normal RT state is entered. The BB2 state is a state that occurs on condition that the BB2 is won in the normal state or the normal carryover state or the RT is terminated in the BB2RT state, and the internal lottery of the RB2 and RB3 is executed at a ratio of 10: 1. State. When the BB2 state is terminated, the normal state is entered. The BB3 state is a state that occurs on condition that the BB3 is won in the normal state or the normal carryover state or the RT is ended in the BB3RT state, and is in a ratio of 24 to 7, that is, the above-described BB2 state is This is a state in which the internal lottery of RB2 and RB3 is executed at different ratios. When the BB3 state is terminated, the normal state is entered.

  The BB2RT state is a state that occurs on condition that the BB2 is won in the normal RT state or the normal RT carryover state, and is a state in which an internal lottery of RB2 and RB3 is executed at a ratio of 10: 1. The BB3RT state is a state that occurs on condition that the BB3 is won in the normal RT state or the normal RT carryover state, and is a state in which the internal lottery of RB2 and RB3 is executed at a ratio of 24: 7.

  The RB1 state is a state in which the internal lottery of the bell is executed with high probability but the internal lottery of the replay is not executed. The RB2 state is a state in which the bell internal lottery is executed with high probability (lower probability than the RB1 state) and the replay internal lottery is executed. The RB3 state is a state in which the bell internal lottery is executed with high probability (lower probability than the RB1 state) and the replay internal lottery is executed. The RB2RT state is a state in which the internal lottery of the bell is executed with a high probability (lower probability than the RB1 state) and the internal lottery of the replay is executed. The RB3RT state is a state in which the bell internal lottery is executed with a high probability (lower probability than the RB1 state) and the replay internal lottery is executed, and the RT is terminated on the condition that the internal winning is made.

  The slot machine 1 allows the specific employee to operate the setting means with the front door opened, thereby increasing the winning probability of the above-mentioned BB role and RB role in a plurality of stages (in this embodiment, for example, 6 to 1-6). It is possible to set in step). The larger the set value, the more advantageous setting for the player, and the smaller the set value, the unfavorable setting for the player.

  As an internal winning combination lottery table for determining an internal winning combination, the control unit 19 performs a normal state, a normal carryover state, a normal RT state, a normal RT carryover state, a BB2 state, a BB3 state, an RB1 state, an RB2 state, and an RB3 state. Holds the internal winning combination lottery table. FIG. 6 shows an example of the internal winning combination lottery table, and shows an example of the internal winning combination lottery table in the normal state, the normal carryover state, the normal RT state, and the normal RT carryover state. The internal winning combination lottery table in the normal state and the normal RT state differs between the six setting values, but the internal winning combination lottery table in the normal carryover state and the normal RT carryover state is common between the six setting values. Although not shown, the internal winning combination lottery table in the BB2, BB3, RB1, RB2, and RB3 states is also common among the six setting values.

  In the internal lottery performed when the game is started, one random number is obtained from the random numbers generated in the range of 0 to 65535, and the obtained random number is compared with the random number in the internal winning combination lottery table described above. To determine the internal winning combination. That is, the winning probability of each combination is a value obtained by dividing the number of selected random numbers by the total number of random numbers (65536). In the above, the internal winning combination lottery table in the normal carryover state, normal RT carryover state, BB2 state, BB3 state, RB1 state, RB2 state and RB3 state is common among the six set values. The winning combination lottery table may be varied among the six set values.

  Here, the internal lottery probability is set so that the payout rate during RT is higher than the average payout rate of each set value. The payout rate is the number of payouts / inputs. The average payout rate is the average payout rate in all game states. FIG. 7 shows an example of the payout rate.

  An example of calculating the payout rate is shown below. The payout rate is calculated by the sum of (substantial winning probability of each small part and replay) × (number of payouts of each part) ÷ (number of input). The actual winning probability means that a role that can be won by always looking at a certain position must be won at the time of internal winning, and only 1/3 of that at the time of internal winning can be won. For (12-card combination), it means the winning probability in the case of winning by 1/3 of the internal winning. However, since the symbol of the winning combination is notified during the internal winning of the 12-sheet combination during the AT, the winning probability is assumed to be a prize even when the internal winning of the 12-sheet winning combination.

The payout rate in the normal state (when set value = 6) is calculated by the following calculation formula. Since the bonus winning is not taken into consideration, the payout rate in the normal state is equal to the payout rate in the normal carryover state.
In the normal state (the normal carryover state when the setting value = 6) = (Orange lottery probability) × 15 + (12 lottery 1 lottery probability) × 12 × 3 (12 double portion 2,
(Including 12 for 3 roles) ÷ 3 (Only 1/3 can be won) + (Bell lottery probability) × 9 +
(Watermelon lottery probability) x 5 + (Cherry lottery probability) x 2+ (Replay lottery probability) x
3 ÷ 3
= (1/200) × 15 + (1/15) × 12 × 3 ÷ 3 + (1/15) × 9 + (1/90
) × 5 + (1/70) × 2 + (1 / 7.3) × 3 ÷ 3 = 0.66

The payout rate in the normal RT state (when set value = 6) is calculated by the following formula. Since the bonus winning is not considered, the payout rate in the normal RT state is equivalent to the payout rate in the normal RT carryover state.
Ball appearance rate in normal RT state (normal RT carryover state when set value = 6) = (orange lottery probability) × 15 + (12 lottery 1 lottery probability) × 12 × 3 (12 double portion 2,
(Includes 12 minutes 3) + (Bell draw probability) x 9 + (Watermelon draw probability) x 5 + (Cherry draw probability) x 2+ (Replay draw probability) x 3 ÷ 3
= (1/200) × 15 + (1/15) × 12 × 3 + (1/15) × 9 + (1/90) ×
5+ (1/70) × 2 + (1/3) × 3 ÷ 3 = 1.39

An example of calculating the average payout rate is shown below. here,
The average payout rate in the normal state (when set value = 6) and the average payout rate in the special state won in the normal state are calculated by the following calculation formulas. However, the number of medals obtained by the player by winning BB1 is 210, and the number of medals obtained by the player by winning BB2 or BB3 is 50.
Ball appearance rate in normal state (when set value = 6) = (BB1 lottery probability) × 210 + (BB2 lottery probability) × 50 + (BB3 lottery probability)
× 50 + (orange lottery probability) × 15 + (12 lottery 1 lottery probability) × 12 × 3 (12
(Including 2 for 12 and 3 for 12) ÷ 3 (Only 1/3 can be won) + (Bell Lottery Probability) x 9 + (Watermelon Lottery Probability) x 5 + (Cherry Lottery Probability) x 2+ (Replay (Probability of lottery) × 3 ÷ 3
= (1/400) × 210 + (1/150) × 50 + (1/150) × 50 + (1/20
0) × 15 + (1/15) × 12 × 3 ÷ 3 + (1/15) × 9 + (1/90) × 5 + (
1/70) × 2 + (1 / 7.3) × 3 ÷ 3 = 1.05

The average payout rate in the normal RT state (when set value = 6) and the average payout rate in the special state won in the normal RT state are calculated by the following calculation formulas.
In the normal RT state (when set value = 6), the payout rate = (BB1 lottery probability) × 210 + (BB2 lottery probability) × 50 + (BB3 lottery probability)
× 50 + (orange lottery probability) × 15 + (12 lottery 1 lottery probability) × 12 × 3 (12
(Including 2 for 12 and 3 for 12) + (Bell draw probability) x 9 + (Watermelon draw probability) x
5 + (cherry lottery probability) x 2+ (replay lottery probability) x 3/3
= (1/400) × 210 + (1/150) × 50 + (1/150) × 50 + (1/20
0) × 15 + (1/15) × 12 × 3 + (1/15) × 9 + (1/90) × 5 + (1 /
70) × 2 + (1/3) × 3 ÷ 3 = 1.78

Next, the RT end probability (when set value = 6) in one game is calculated by the following calculation formula. The RT continuation probability at the time of winning the BB2 is a ratio for executing the internal lottery of the RB2 in the BB2 state, and is calculated by the following calculation formula.
RT continuation probability when winning BB2 = 10 / (10 + 1) = 0.91

The RT continuation probability at the time of winning the BB3 is a ratio for executing the internal lottery of the RB2 in the BB3 state, and is calculated by the following calculation formula.
RT continuation probability at the time of winning BB3 = 24 / (24 + 7) = 0.77

RT end probability in one game = (probability of ending by internal winning of BB1) + (probability of ending by internal winning of BB2 or BB3)
= {(BB1 internal winning probability) × (BB1 RT winning probability during internal winning)} + {(BB2
And BB3 internal winning probability) × (RT end probability when BB2 or BB3 internal winning)}
= {(1/400) * 1} + [{(1/150) + (1/150)} * {1- (0.91)
+0.77) / 2}]
= 0.0046

The probability that RT will end in the Nth game is calculated by the following formula.
Probability that RT will end in the Nth game = (RT end probability in one game) × {1- (RT end probability in one game)} ^N−1

In this case, if the BB2 or BB3 wins before the RT game number reaches 100 games, and the RT continues after the BB game, the RT game number is subtracted for the BB game (calculated as 10 games at a time). Therefore, it is necessary to consider this amount. In other words, if BB2 or BB3 wins 4 times before the number of RT games reaches 100 games, the RT game number will be practically ended in 60 games, and the probability that RT will end in the 60th game is as follows: Calculated by the formula.
Probability that RT will end at 60th game = ₆₀ C ₄ × {(internal lottery probability of BB2 and BB3) × (RT continuation probability when winning BB2 or BB3)} ⁴ × (RT continuation probability when winning BB2 or BB3) × (Probability that none of the BBs are won internally) ⁵⁶ + {1− (RT end probability in one game)} × {(1− (RT end probability in one game)) ⁵⁹
_{= 60 C 4 × {(1/75} ) × (0.84)} 4 × {1- (1/400 + 1/75)}
^{56 + (1-0.0046) × (1-0.0046} ) 59

Similarly, if BB2 or BB3 wins three times before the number of RT games reaches 100 games, the number of RT games will be substantially ended in 70 games, and the probability that RT will end in the 70th game is as follows: It is calculated by the following formula.
Probability of completing RT at 70th game = ₇₀ C ₃ × {(1/75) × (0.84)} ³ × {1− (1/400 + 1/75)}
^{67 + (1-0.0046) × (1-0.0046} ) 69
Also, if BB2 or BB3 wins twice before the number of RT games reaches 100 games, the number of RT games will be virtually ended in 80 games, and the probability that RT will end in the 80th game is calculated as follows: Calculated by the formula.
Probability of completing RT at 80th game = ₈₀ C ₂ × {(1/75) × (0.84)} ² × {1- (1/400 + 1/75)}
^{78 + (1-0.0046) × (1-0.0046} ) 79

Furthermore, if BB2 or BB3 wins once before the number of RT games reaches 100 games, the number of RT games will be practically ended in 90 games, and the probability that RT will end in the 90th game is calculated as follows: Calculated by the formula.
Probability of completing RT at 90th game = ₉₀ C ₁ × {(1/75) × (0.84)} ¹ × {1− (1/400 + 1/75)}
^{89 + (1-0.0046) × (1-0.0046} ) 89

In this way, the probability that RT will end is calculated, the expected number of times of continuation (number of times × end probability) is calculated, and the average number of continuations per RT (sum of the expected number of times of continuation from 1 to 100) 77 times are calculated (see FIG. 8).
Next, the stay rate in the normal RT state (the ratio of the normal RT state to the gaming state in which the bonus internal lottery is performed) is calculated by the following calculation formula. Note that the internal winning bonus is calculated as winning in that game.
Stay rate in normal RT state = (stay period in normal RT state) / {(stay period in normal state) + (stay period in normal RT state)}
= (Average number of continuations per RT) x (RT occurrence probability)
= 77 × (1/400) = 0.19

The stay rate in the normal state is calculated by the following formula.
Stay rate in normal state = 1-(Stay rate in normal RT state)
= 1-0.19 = 0.81

The average payout rate is calculated by the following formula.
Average game play rate = (game play rate in each game state) x (stay rate in each game state)
= (Race rate in normal state) x (Residence rate in normal state) + (Rate rate in normal RT state) x (Residence rate in normal RT state)
= 1.05 x 0.81 + 1.78 x 0.19 = 1.19

Based on the calculation results explained above,
Normally, the payout rate in the RT carryover state (= 1.39)> the average payout rate (= 1.19)
Therefore, in the normal RT carryover state, it is better for the player to win the bonus after the RT game number reaches the predetermined number of games and finishes RT than to win the bonus that has been carried over and finish RT It is advantageous. On the other hand,
Rolling rate in normal RT state (= 1.78)> Riding rate in normal RT carryover state (= 1)
. 19)
Therefore, if RT does not end even if a bonus that has been carried over in normal RT carryover state is won, and RT continues even after the bonus ends, the player who wins immediately should win Is advantageous to. Therefore, in order to make the game more advantageous, even in the normal RT carryover state, the player wins a bonus according to the situation such as what kind of bonus is carried over and how many RT games are remaining Judgment as to whether or not to be performed is required.

FIG. 9 shows an expected increase in the number of game media with respect to the number of remaining RT games (remaining number of times) in the normal RT carryover state. Expected increase 1 is the expected increase in game media when N games are played without winning a bonus when the number of remaining RT games is N in the normal RT carryover state. Is done.
Expected increase 1
= (Risk rate in normal RT carryover state -1) x number of throws x N
= (1.39-1) x 3 x N

Expected increase value 2 is an expected increase value of the game medium when the bonus game is played N times without the internal winning when the number of remaining RT games is N times in the normal RT state, and is calculated by the following formula: Is done.
Expected increase 2
= (Race rate in normal RT state-1) × Number of throws × N
= (1.78-1) × 3 × N

The expected increase value 3 is an expected increase value of the game medium when the BB2 that is won internally when the number of remaining RT games is N in the normal RT state is calculated, and is calculated by the following calculation formula.
Expected increase 3
= (Race rate in normal RT state-1) × RT continuation probability at the time of winning BB2 × Number of throws × (N−
10)
= (1.78-1) x 0.91 x 3 x (N-10)

The expected increase value 4 is an expected increase value of the game medium when the BB3 that is won internally when the number of remaining RT games is N in the normal RT state is calculated, and is calculated by the following calculation formula.
Expected increase 4
= (Race rate in normal RT state-1) × RT continuation probability at the time of winning BB3 × Number of throws × (N−
10)
= (1.78-1) x 0.77 x 3 x (N-10)

  In FIG. 9, if BB2 is an internal winning, comparing the expected increase value 1 and the expected increase value 3, the expected increase value 3 is greater than the expected increase value 1 until the remaining number of games is 22 times. Although it is large, the expected increase 3 is smaller than the expected increase 1 after the remaining number of games is 21 (see “A” in FIG. 9), so if the number of remaining RT games is 22 or more, the winner Is advantageous to the player, and when the number of remaining RT games is 21 games or less, it is advantageous for the player to end the normal RT carryover state while avoiding winning. This means that if the number of remaining games in RT is large, it is advantageous for the player to win the BB early and make a bonus internal lottery again. On the other hand, if the number of remaining games is small, Considering the risk that RB3 will win internally in the BB2 state and the RT will end, it is advantageous for the player to reach 100 games without winning BB2.

  Also, if BB3 is an internal winner, comparing the expected increase 1 and the expected increase 4, the expected increase 4 is greater than the expected increase 1 until the remaining number of games is 28. Since the expected increase value 4 is smaller than the expected increase value 1 after the remaining number of games is 27 (see “B” in FIG. 9), the player who wins the prize when the remaining number of RT games is 28 games or more When the number of remaining RT games is 27 games or less, it is advantageous for the player to end the normal RT carryover state while avoiding winning.

FIG. 10 shows the change in the payout rate when BB2 wins the game internally during RT.
In a state where the number of remaining RT games at the time of BB2's internal winning is large, BB2 is won early, the BB2 game is terminated, and the remaining RT is played in a state where the ball payout rate is high (new bonus internal lottery is performed) Digestion is advantageous for the player. That is, when the number of remaining RT games is, for example, 70 games, if a game is played with a payout rate of 1.39, only an increase of 81.1 can be expected by the end of RT, but when BB2 is won If the RT continues for 60 games after the end of the BB2 game (10 games required for the BB2 game are subtracted) (if RB3 is not elected internally during the BB2 game) A game can be played in 78, and an increase of 141 can be expected in 60 games. On the other hand, RT ends with a probability of 0.91 when BB2 wins, and the increase expected value in this case is 0, but even when combining the two, 106.9 Therefore, it is more advantageous for the player to win BB2 when the number of remaining RT games is 70 games.

  In addition, when the number of remaining RT games at the time of BB2's internal winning is small, it takes 10 games to digest the BB2 game, and there is also a risk of ending RT due to the internal winning of RB3. It is advantageous for a player to win BB2 after digesting RT. In other words, when the number of remaining RT games is 18, if a game is played with a payout rate of 1.39, an increase of 20.9 can be expected by the end of RT, but if BB2 is won, The remaining number of RT games after the end of the BB2 game is 8 times, and considering the risk of the end of RT, only an increase of 17.1 can be expected, so BB2 was won after digesting RT Is more advantageous for the player.

By the way, the above describes the case where the calculation is made for the case where the set value is “6”, but the same applies to the case where the set value is other than “6”.
Next, the operation of the above configuration will be described with reference to FIGS. The control unit 19 periodically performs a game start process and a winning process. Hereinafter, the game start process and the winning process will be sequentially described.

(1) Game Start Process When the game start process is started, the control unit 19 determines whether or not an operation for starting a game (operation of the start lever 11) has been detected (S1). Here, if the control unit 19 determines that the game start operation has been detected by the player operating the start lever 11 to start the game (S1: YES), the range of 0 to 65535 in decimal number One random number is acquired from the random numbers generated in step 1, the acquired random number is checked against the random number in the internal winning combination lottery table, the internal winning combination is drawn (S2), and the internal winning flag of the internal winning combination is set. It is set to “1” (S3).

  Next, the control unit 19 determines whether or not the RB2 flag is set to “1”, that is, whether or not RB2 is internally won (S4), and the RB2 flag is set to “1”. That is, if it is determined that RB2 has been internally won (S4: YES), the RT flag is set to “0” (S5), the reels 3a to 3c are started to rotate (S6), the game start process is terminated, and the process returns. To do.

(2) Winning process When the winning process is started, the control unit 19 determines whether or not a reel stop operation has been detected (S11). Here, if the control unit 19 determines that the reel stop operation is detected by the player operating the stop buttons 12 to 14 to stop the reels 3a to 3c (S11: YES), the corresponding reel The rotation of 3a-3c is stopped (S12). Then, the control unit 19 determines whether or not the rotation of all the reels 3a to 3c has been stopped (S13), and determines that the rotation of all the reels 3a to 3c has been stopped (S13: YES). The winning symbol is determined (S14), and the winning combination is determined (S15 to S19).

  If the control unit 19 determines that the winning symbol is a replay symbol and has won the replay (S15: YES), the control unit 19 sets a replay game (S20) and sets the replay flag to “0” (S21). . Next, the control unit 19 decrements the RT counter (S22), determines whether or not the RT counter is set to “0” (S23), and determines that the RT counter is set to “0”. (S23: YES), the RT flag is set to “0” (S24), and it is determined whether or not the end condition of BB1 has been achieved (S25).

  Next, when it is determined that the BB1 end condition has been achieved (S25: YES), the control unit 19 sets the BB1 state flag to “0” and the RB1 state flag to “0” (S26), and the RT flag. Is set to “1” (S27), the RT counter is set to “100” (S28), the winning process is terminated, and the process returns. If the control unit 19 determines that the end condition of BB1 is not achieved (S26: NO), the control unit 19 determines whether the end condition of BB2 or BB3 is achieved (S29), and the end condition of BB2 or BB3. (S29: YES), the BB2 state flag or the BB3 state flag that achieved the end condition is set to “0”, and the RB2 state flag and the RB3 state flag are set to “0” (S30). Finish the winning process and return.

  When the control unit 19 determines that the winning symbol is the BB1 symbol and has won the BB1 (S16: YES), the RT flag is set to “0” (S31), and the BB1 status flag is set to “1”. (S32), the BB1 flag is set to "0" (S33), S22 to S30 are performed, the winning process is terminated, and the process returns. When the control unit 19 determines that the winning symbol is the BB2 symbol or the BB3 symbol and has won the BB2 or BB3 (S17: YES), the control unit 19 sets the winning BB2 state flag or BB3 state flag to “1” ( S32), the BB2 flag or the BB3 flag is set to “0” (S33), the above S22 to S30 are performed, the winning process is terminated, and the process returns.

  Further, when the control unit 19 determines that the winning symbol is the RB2 symbol or the RB3 symbol and has won the RB2 or RB3 (S18: YES), the winning unit RB2 status flag or the RB3 status flag is set to “1” (S18: YES) S34), the RB2 flag or the RB3 flag is set to “0” (S353), the above S22 to S30 are performed, the winning process is terminated, and the process returns. Further, when the control unit 19 determines that the winning symbol is a small role symbol and has won the small role (S19: YES), the payout process of paying out the number of medals corresponding to the winning small role from the medal payout port 17 (S36), the small combination flag is set to “0” (S37), the above-described S22 to S30 are performed, the winning process is terminated, and the process returns.

  As described above, according to the present embodiment, in the slot machine 1, the internal lottery probability is set so that the payout rate during RT exceeds the average payout rate in all gaming states, and RT is generated. When BB1 is won, RT is terminated, while on the other hand, when BB2 or BB3 is won, RT is continued, so even if BB wins internally, It is possible to provide a situation where it is advantageous and disadvantageous for the player to win according to the type of BB that is won internally and the number of remaining games at RT. Even after winning, you can enhance the fun of the game. In addition, when RT is ended by winning a BB, the game is limited to a small amount of game media obtained at RT and a game media obtained at one BB, but such a problem can be solved.

The present invention is not limited to the embodiment described above, and can be modified or expanded as follows.
The present invention may be applied to a slot machine that uses parrots, game balls, or a so-called enclosed slot machine that does not use actual medals.
When BB has won internally, a notification effect may be executed in accordance with the BB that has won internally. BB1 winning symbol and BB2 winning symbol are the same, BB1 winning symbol and BB3 winning symbol are the same, BB1 winning symbol, BB2 winning symbol and BB3 winning symbol are the same May be.
In BB2 or BB3, only RB2 in which RT does not end even if an internal winning or winning is made may be drawn.

1 is a front view of a slot machine according to an embodiment of the present invention. Functional block diagram showing electrical configuration The figure which shows the symbol arrangement of each reel Diagram showing internal winning combination Diagram showing transition of gaming state The figure which shows an internal winning combination lottery table A figure showing the payout rate Figure showing average number of continuations Diagram showing expected increase Time chart Flow chart (Part 1) Flow chart (Part 2)

Explanation of symbols

  In the drawings, 1 is a slot machine, 3 is a reel (design variation display means), 5 is a liquid crystal display (notification effect execution means), 11 is a start lever (game start operation means), and 12 is a stop button (stop operation means). , 13 is a middle stop button (stop operation means), 14 is a right stop button (stop operation means), 19 is a control unit (internal lottery means, display control means, winning determination means, profit granting means, specific state generating means, special State generating means).

Claims (4)

A symbol variation display means 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;
Internal lottery means for executing an internal lottery for determining an internal winning combination from a plurality of types of winning combinations when the game start operation means is operated, and establishing an internal winning flag corresponding to the determined internal winning combination When,
A stop operation means operated by a player to stop the display of the variation of the symbol by the symbol variation display means;
When the stop operation means is operated, a display control means for drawing a symbol corresponding to the internal winning flag within a drawing range defined in advance and stopping and displaying it in a symbol display area;
Winning determination means for determining whether or not the symbol stopped and displayed 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;
A specific state generating means for generating a specific state advantageous for a player based on a predetermined condition and ending the specific state when the number of games after the specific state is generated reaches a predetermined number of times;
A special state in which the lottery probability of at least one combination is changed, and the predetermined first end condition is generated when the winning determination means determines that the winning symbol corresponds to the predetermined first special combination. When the first special state that ends when it is achieved and the winning determination means determine that the winning symbol corresponding to the predetermined second special combination is determined and the predetermined second end condition is achieved Special state generating means capable of generating a plurality of types of special states including the second special state ending in
The internal lottery means executes an internal lottery so that a payout rate in the specific state exceeds an average payout rate in all game states,
In the case where the specific state is generated, the specific state generation unit terminates the specific state when the first special state generation unit generates the first special state, while the second special state A slot machine characterized in that, when the state generating means generates the second special state, the specific state is continued. The internal lottery means performs a lottery of a predetermined specific state ending combination when the second special state has occurred,
In the case where the second special state has occurred, the specific state generating means is configured such that the specific state ending combination is determined by the internal lottery means as an internal winning combination or the winning determination means. 2. The slot machine according to claim 1, wherein when the winning symbol corresponding to is determined to be, the specific state is terminated. The special state generating means is generated when the winning determination means determines that the winning symbol corresponds to the predetermined third special combination, and the predetermined third end condition that can be achieved within the predetermined number of times is achieved. A third special state can be generated that terminates when
The internal lottery means, when the third special state occurs, executes a lottery of a predetermined specific state end combination with a lottery probability different from the case where the second special state occurs,
3. The specific state generating unit continues the specific state when the specific state is generated and the third special state generating unit generates the third special state. The slot machine described in. In the state where the first special combination or the second special combination is internally elected, it comprises a notification effect executing means for executing different notification effects according to the internal winning combination,
4. The slot machine according to claim 1, wherein a winning symbol corresponding to the first special combination and a winning symbol corresponding to the second special combination are the same.

Images