JP4672482B2 - Slot machine - Google Patents

Description

  The present invention relates to a slot machine.

  In the slot machine, after the bonus flag (special role flag) is established (bonus winning) by internal lottery, the player operates the stop button (stop means) by so-called pushing to activate the reel (design display means) If the bonus winning symbol (special role winning symbol) is stopped on the line (winning line), the bonus winning (special role winning) can be achieved. At this time, in a normal slot machine, the bonus flag establishment state continues (does not disappear) until the bonus process is executed, and when the bonus flag is established, the reel pull-in control is executed so that the bonus winning symbols can be easily aligned. The However, in reality, even if the bonus flag is established, the bonus winning symbols are not readily available, and the merit (game medium) is consumed during that time, and the player's profit due to the bonus winning is impaired (a disadvantage occurs). There is a case. This tendency is particularly noticeable for beginner players who are unfamiliar with the pushing operation. In view of this, it has been proposed to assist the player in the eye-pushing operation by informing the player of the stop operation timing of the reel by the stop button by means of notifying means such as LEDs and lamps (Patent Documents 1, 2, and 3). reference).

Japanese Patent Publication No. 3-10346 Japanese Patent Laid-Open No. 11-47352 JP 2004-154440 A

However, with these things,
(1) Notifying means such as LEDs and lamps are required, and it is also necessary to significantly modify the control program in order to activate these notifying means to assist the pushing operation.
(2) For beginner players, even if the reel stop operation timing is informed by the means for assisting the pushing operation, the bonus winning symbols can be arranged as expected because they are not accustomed to the pushing operation. However, it is still impossible to enjoy the game because the profits due to the bonus winning are easily lost.
(3) For advanced players who do not need the notification means for assisting the pushing operation, the release switch or the like is operated to release the operation of these reporting means, or the pushing technique level as in Patent Document 3 is used. Since it requires an operation to set and adjust to a high level and to set the degree of assisting the push to a low level, the game cannot be enjoyed bothersomely.

  The subject of the present invention is from a beginner who is unfamiliar with the pushing operation to an advanced user who does not need assistance with the pushing operation, regardless of the technical level of the pushing operation of the player, and without increasing the manufacturing cost, It is an object of the present invention to provide a slot machine that can reduce the disparity of disadvantages between players that occur after the special role flag is established and wins the special role, and that can suppress the loss of the player at the beginner level.

Means for Solving the Problems and Effects of the Invention

In order to solve the above problems, the slot machine of the present invention provides:
Game starting means operated by the player to start the game;
In accordance with the operation of the game start means, a lottery means for determining a winning combination including a BIG bonus combination as a special combination and establishing a winning winning combination flag;
A symbol display means for variably displaying a plurality of types of symbols;
Stop means operated by the player in order to stop the change display of the symbols by the symbol display means;
In a state in which the combination lottery means has passed a flag of the BIG bonus combination, when the basic pattern set in advance as possible winning a BIG bonus combination winning symbol to the BIG bonus combination is stopped and displayed on the symbol display unit A special combination executing means for determining that the BIG bonus combination is a prize and executing the BIG bonus combination game ;
After the combination lottery means has passed a flag of the BIG bonus combination, the basic design is based on the symbol display unit on the result of the left digested game not stopped and displayed, the basic design as well as the BIG bonus combination And a special role winning symbol adding means for additionally setting a substitute symbol that can be won as the BIG bonus winning symbol winning symbol,
The special combination executing means determines that the BIG bonus combination is awarded even when the substitute symbol set by the special combination winning symbol adding unit is stopped and displayed on the symbol display unit, and the BIG bonus combination game It is characterized by performing.

In this way, after the winning lottery means establishes the special role flag ( that is, the BIG bonus role flag ; the same shall apply hereinafter ), the special role winning symbol ( that is, the BIG bonus role; the same shall apply hereinafter ) that can be won. That is , based on the result of a game in which a basic symbol preset (stored) as a BIG bonus winning symbol (same below ) is not stopped and displayed on the symbol display means (for example, a reel), the special symbol is played in the same manner as the basic symbol. A substitute symbol that can be won is added and set as a special winning symbol. At this time, it is easy for a high-level player who does not need assistance for the eye-pushing operation to stop and display the basic symbol (special role winning symbol) on the symbol display means. Therefore, the disadvantage that occurs before the special combination is won ( ie, the BIG bonus combination is won; the same applies hereinafter ) is small. On the other hand, for beginner level players who are unfamiliar with the pressing operation, even if the basic display cannot be stopped and displayed on the symbol display means, it is additionally set as a special prize winning symbol by overlapping the number of games etc. Eventually, you can win a special role depending on the substitute symbol. As a result, it is possible to reduce the disadvantages (suppress losses) that occur before the special combination is won after the special combination flag is established. In this manner, the disadvantageous disparity generated between the advanced level player and the beginner level player after winning the special role after the special role flag is established can be reduced.

  In addition, it is only necessary to count the number of games and set the substitute symbol as a special role winning symbol, so it is only necessary to change the control program slightly, and no notification means such as an LED or a lamp is required. Does not increase significantly.

  By the way, the timing to additionally set the substitute symbol as a special role winning symbol is generally counted after the special role flag is established, and the basic symbol is counted by the number of games digested without being stopped and displayed on the symbol display means. Alternatively, after the special combination flag is established, the basic symbol may be counted by the number of game media inserted (for example, the number of medals) or the number of lost game media without being stopped and displayed on the symbol display means. Alternatively, the number of digested games, the number of inserted game media, and the number of lost game media may be appropriately combined.

And when counting by the number of digestion games after the special role flag is established,
The special prize winning symbol adding means is a game in which neither the basic symbol or the substitute symbol set as the special winning prize symbol is stopped and displayed on the symbol display means in a state where the special lottery means has established the special role flag. As the cumulative number of games based on the number of operations of the starting means increases, it is desirable to additionally set substitute symbols in order to increase the number of special bonus winning symbols set.

  As a result, after the special combination flag is established, the substitute symbol increases as the number of games digested without the basic symbol being stopped and displayed on the symbol display means increases. In other words, the lower the skill level of the player ’s push-in operation, the more likely the winning rate of the special role, that is, the ease of winning the special role after the special role flag is established, that is, the auxiliary level of the push-in operation is more inclined. (Continuously or step by step). Therefore, depending on the skill level of the player's push-in operation, especially for beginner level players, the disadvantages that occur before the special role is won after the special role flag is established (loss is suppressed) It will be easier to bail out. Even if an advanced level player happens to have a special role winning symbol (basic symbol) after the special role flag is established, the number of games after the special role flag is set Gradually the substitute symbol will increase. Therefore, such disadvantages can be easily removed to minimize disadvantages. It should be noted that the number of digest games after the special role flag is established can be easily grasped by accumulating the number of operations of the game start means (for example, start lever) operated each time the game is started. There is no need to provide a counting means.

  In addition to the symbol display means, a game state display means capable of notifying the player of the special role flag is provided, and the game state display means includes a basic symbol set as a special role winning symbol and When the substitute symbol is displayed, not only the basic symbol but also the substitute symbol is displayed by using a game state display means (for example, a liquid crystal display unit) for notifying the player that the special role flag has been established (for example, bonus internal winning). The player can be informed that a special role can be won. The notice display of the substitute symbol on the game state display means gives a sense of security to a beginner level player who is unfamiliar with the pushing operation, and the stop means (for example, the stop button) can be operated calmly.

  For example, each time the special role winning symbol adding means additionally sets a substitute role symbol as a special role winning symbol, the special status winning symbol including the additionally set substitute role symbol is displayed on the game status display means. For example, the assisting effect of the pressing operation is great in stopping the special display winning symbol (basic symbol or substitute symbol) early on the symbol display means.

In addition, the special combination executing means, when the substitute symbol is stopped and displayed on the symbol display means in the state where the combination lottery means has established the special combination flag, the basic symbol is stopped and displayed on the symbol display means It is possible to execute the special role game by changing the game conditions so that it is easier to win a prize in the special role game . As a result, when a special role is won with a substitute symbol, the disadvantage of the special role winning due to the above-mentioned special role winning rate (ease of winning the special role after the special role flag is established) is improved. In addition to the reduction (suppression of loss), it is possible to reduce the disadvantage (suppression of loss) after winning the special role.

  Specifically, winning a special role with a substitute symbol is a phenomenon that occurs frequently in beginner level players who are unfamiliar with the push-in operation. Even with the help of control, it is assumed that the winning symbols of the small roles (for example, 15 roles) are not aligned (cannot be pushed) and are lost. Therefore, when winning a special role with a substitute symbol, the game conditions may be set so that the small role winning probability during execution of the special role is different from that when winning a special role with the basic symbol. it can.

  Preferably, when a special role is won with a substitute symbol, there will be no loss due to reel pull-in control during execution of the special role (that is, the winning symbols will always be aligned even if the pushing operation is not performed). The winning probability of a small role (for example, a 15-card role, a 3-card role, or a 2-card role) that can be lost due to the reel pull-in control is set. It should be set relatively low. As a result, even a beginner-level player who is unfamiliar with the push-in operation can reduce the frequency of missing and minimize the disadvantage (loss) after winning the special role.

(Example)
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic front view showing an example of a slot machine according to the present invention. The slot machine 1 has a casing, and three reels 41L, 41C, and 41R (see FIG. 2; symbol display means) that are rotationally driven by a stepping motor are accommodated in the casing. On the left, middle, and right reels 41L, 41C, and 41R, symbols (designs including numerals) are drawn (see the reel arrangement in FIG. 4A). Three symbols of each reel can be visually recognized from the display window 10 provided in the center, and thereby, symbol display areas of the left, middle, and right symbol display portions 11L, 11C, and 11R are formed.

  At the bottom of the display window 10, there are provided a medal insertion slot 12, a credit insertion button 13 that is operated when the player plays a game using the credit function, and a credit checkout button 14 that the player operates to release the credit. It has been. Furthermore, in the lower part, a start lever (start switch) 15 for starting a game, left, middle, right, left, middle, and right, which the player operates to stop the symbol variation of the symbol display portions 11L, 11C, 11R, Right stop buttons 16L, 16C, and 16R (stop means) are provided. At the bottom, a medal payout port 17 and a medal storage tray 18 are provided. The right side of the display window 10 displays a credit display unit 19 for storing and displaying up to 50 medals inserted and paid out, and displays the number of medals to be paid out when a symbol indicates a predetermined combination. A payout number display unit 20 is provided.

  When playing a game using the credit function, medals to be paid out at the time of winning a prize and fourth or more inserted medals are stored up to 50. The stored medal number is displayed on the credit display unit 19. Then, by operating the credit insertion button 13, medals corresponding to the set number are inserted, and a one-bet game, a two-bet game, or a three-bet game is possible.

  Speakers 21 and 21 functioning as a notification device for providing voice information to the player are provided on the upper and lower sides of the housing in pairs. In addition, a liquid crystal display unit 22 is provided between the speakers 21 and 21 to provide (notify) a game effect as image information to the player. By these notification devices, information relating to the game is provided to the player in one of images, colors and sounds, or a combination thereof.

  The liquid crystal display unit 22 also functions as a display device (game state display means) for winning a bonus (corresponding to a special role) by internal lottery and notifying a player that a bonus flag (special role flag) has been established. (See FIG. 7A). As in the conventional case, a BIG bonus (big bonus) and a REG bonus (regular bonus) are set as bonuses (see the role configuration in FIG. 4B). However, the special role is not limited to the BIG bonus and the REG bonus, and CT (challenge time), AT (assist time), and the like can also be adopted.

  FIG. 2 is a block diagram schematically showing the electrical configuration of the slot machine 1. The main board 30 which is a control unit of the slot machine 1 includes a CPU 31 (combination lottery means; special role execution means; special prize winning symbol addition means) which is an arithmetic device, various programs 32a to 32c, a lottery determination table 32d, and effects. ROM 32 which is a read-only storage device in which pattern table 32e and the like (see FIG. 3A) are stored in advance, and RAM 33 (special role winning symbol storage means) which is a readable / writable main storage device and used as a work area. And an input / output interface (I / O) 34. These devices are connected to each other by a bus not shown in the figure.

  An operation signal from the operation unit is input to the main board 30 via the input / output interface 34. A signal input to the main board 30 is input to the CPU 31. Each operation unit includes a start lever 15, left, middle, and right stop buttons 16L, 16C, and 16R, a inserted medal detection unit 12a, a credit insertion button 13, a credit settlement button 14, a power switch, and the like.

  While the game is being executed, a sequence program such as a game control program 32a, a lottery process program 32b, a winning determination process program 32c (see FIG. 3A) stored in the ROM 32 is sequentially read by the CPU 31. And is stored in the RAM 33 and executed as the game progresses. A process execution command is output from the CPU 31 to each operation unit (the reel drive unit 41, the medal payout unit 42, the decorative lamp unit 43, and the like) via the input / output interface 34.

  The process execution command is also output from the CPU 31 to the liquid crystal display unit 22 and the audio output unit 45 via the input / output interface 34. The ROM 32 stores an image display program, image data, an audio output program, audio data, and the like, and is read by the CPU 31 according to the operation of the slot machine 1. As the program is executed, an image data signal and an audio data signal are output to the liquid crystal display unit 22 and the audio output unit 45, respectively. The speaker 21 is controlled via the audio output unit 45.

  The operation of the reel drive unit 41 is controlled by a drive pulse signal output from the CPU 31. The left, middle, and right reels 41L, 41C, and 41R are detected by the stop position detection unit 47 for each rotation, and a reel reference position signal is input to the CPU 31. The reel is controlled based on this information.

  The operation mechanism of the slot machine 1 is well known, and only the main points will be described. When a medal is directly inserted into the medal insertion slot 12 or when the credit insertion button 13 is operated, a medal is inserted and preparation for playing a game is completed. On the main board 30, winning lines 51, 52, 53 (see FIG. 1) are activated according to the insertion of medals, lamps corresponding to the respective lines are turned on, and a game start signal is input from the start lever 15. In response to this, an internal lottery process for determining which of a plurality of predetermined winning combinations such as a bonus (equivalent to a special combination) or a small combination is to be won is executed. The winning winning combination flag is established. Such a lottery process is performed by sampling a random number generated on the main board 30 and determining which of the plurality of types of winning combinations has been won or lost based on the sampling random number. The winning winning combination flag is established. That is, the CPU 31 of the main board 30 functions as a role lottery means.

  When the player operates the left, middle and right stop buttons 16L, 16C and 16R, the corresponding left, middle and right reels 41L, 41C and 41R are stopped based on the internal winning flag. When the symbols corresponding to the winning combination are displayed on the left, middle, and right symbol display portions 11L, 11C, and 11R when the left, middle, and right reels 41L, 41C, and 41R are stopped, medals are paid out (FIG. 4 ( Refer to the role composition of b)). The left, middle, and right reels 41L, 41C, and 41R are controlled to draw in a maximum of 4 symbols. The symbols corresponding to the winning flag are drawn, or in the case of non-winning, the symbols corresponding to the winning combination are prepared. Do not. Such reel control is performed by a lottery determination table 32d (reel stop table; FIG. 3 (a)) in which stop positions of the left, middle, and right reels 41L, 41C, and 41R are predetermined in accordance with the establishment flag (win flag) For example) (see Japanese Patent Laid-Open No. 2002-810). Therefore, bonus winning symbols (basic symbols and substitute symbols) to be described later can be designated in advance in the lottery determination table 32d.

  Then, the CPU 31 has the symbols stopped and displayed on the reels 41L, 41C, and 41R based on the operation of the stop buttons 16L, 16C, and 16R in a state where the bonus flag (special role flag) is established as the special role executing means. When the basic symbol set in advance corresponding to the bonus, that is, the bonus winning symbol (special role winning symbol) is matched, it is determined that the bonus is won and the bonus game is executed for a predetermined period thereafter. Further, as a special role winning symbol adding means, when the bonus flag is established and the symbols stopped and displayed on the reels 41L, 41C, 41R do not coincide with the basic symbol (bonus winning symbol), Each time a predetermined number of games (for example, three games) are consumed after the bonus flag is established, a substitute symbol that can be awarded with a bonus in the same manner as the basic symbol is sequentially added and set as a bonus winning symbol by a predetermined number (for example, one type) (see FIG. 4 (b)). At this time, every time a substitute symbol is additionally set, the liquid crystal display unit 22 displays all bonus winning symbols including the additionally set substitute symbol (see FIG. 7B) as a special winning symbol display means. It has the function of.

  Here, the basic symbol setting and the substitute symbol additional setting are performed by, for example, storing the basic symbol and substitute symbol data stored in the lottery determination table 32d of the ROM 32 as bonus winning symbols in the RAM 33 (special role winning symbol storage). The bonus winning symbol storage area 33a is transferred and stored (see FIGS. 3A and 3B). Further, the number of digested games after the bonus flag is established is determined by counting the number of operations of the start lever 15 operated each time the game is started in the game number count area 33b (game number counter) of the RAM 33 (FIG. 3 ( b)).

  As shown in FIG. 3A, the ROM 32 of the main board 30 (control unit) has a game control program for controlling the game of the entire slot machine 1 using a lottery determination table 32d, an effect pattern table 32e, and the like. In addition to 32a, a lottery processing program 32b executed in response to the start of the game and a winning determination processing program 32c executed after the lottery processing are stored.

  Next, control of the slot machine 1 will be described with reference to the flowcharts shown in FIGS. The flowcharts of FIGS. 5 and 6 correspond to the programs 32b and 32c stored in the ROM 32 of FIG.

  First, in the flowchart showing the lottery process of FIG. 5, it is confirmed in S1 whether the start lever 15 is ON (game start operation has been performed). If the start lever 15 is ON (YES in S1), an internal lottery is performed in S2, and a winning combination flag won by the internal lottery is established (ON) in S3. When a bonus is won in a state where the bonus flag has already been established, the bonus combination flag is also established together with the bonus flag. Next, whether or not the bonus flag is turned on (established) in S4, that is, whether or not the flag turned on in S3 (including the case where it was turned on in the lottery process executed in the previous game) was the bonus flag. Check. If the bonus flag is ON (YES in S4), the liquid crystal display unit 22 is notified and displayed that the bonus flag is established in S5.

  Subsequently, in S6, it is checked whether the count value stored in the game number count area 33b (game number counter), that is, the number of digested games after the establishment of the bonus flag has reached “9”. If the count value of the number of games is less than “9” (NO in S6), the count value of the number of games is incremented by “1” in S7. Next, in S8, it is determined whether or not the count value of the number of games has reached a threshold value. If the threshold value has been reached (YES in S8), from the lottery determination table 32d in the ROM 32 in S9. The data of the substitute symbol 1 is transferred to the bonus winning symbol data storage area 33a of the RAM 33, and additionally stored (set) as a bonus winning symbol (see FIG. 3). Further, in S10, all the bonus winning symbols (basic symbol + substitute symbol 1) stored in the bonus winning symbol data storage area 33a are displayed on the liquid crystal display unit 22, and the process returns.

  The basic symbol data is transferred and stored (set) in advance from the lottery determination table 32d in the ROM 32 to the bonus winning symbol data storage area 33a in the RAM 33 when the bonus flag is turned ON (YES in S4) ( (See FIG. 3). Further, when the start lever 15 is OFF (NO in S1), the bonus flag is OFF (NO in S4), the count value of the number of games is “9” or more (YES in S6), and the count of the number of games If the value has not reached the threshold value (NO in S8), the process immediately returns.

  Specifically, as shown in FIG. 8, the threshold value of S8 is set at intervals of three game number count values “3”, “6”, and “9” in the game number count area 33b. Therefore, every time the operation of the start lever 15 is repeated three times (YES is passed three times in S1), the game number count value reaches the threshold value, and one substitute symbol is added as a bonus winning symbol in S9. It will be remembered.

  Next, in the flowchart showing the winning determination process of FIG. 6, whether or not all the reels 41L, 41C, 41R are stopped in S11, and subsequently, the stop display symbols of the reels 41L, 41C, 41R are lottery in S12. It is determined whether or not the winning symbol (see FIG. 4B) stored in the determination table 32d (see FIG. 3A) matches. If both are YES, in S13, after paying out a predetermined number of medals (see FIG. 4 (b)) according to the winning combination with the same symbol, in S14, the winning combination flag (in S3) (ON flag) is cleared (OFF). Then, in S15 and S17, it is confirmed again whether or not the winning symbol (the reel 41L, 41C, 41R stop display symbol) is a bonus winning symbol. As a result, in the case of a BIG bonus winning symbol (YES in S15), the BIG bonus process is executed and returned in S16. In the case of a REG bonus winning symbol (NO in S15 and YES in S17), REG is determined in S18. Execute bonus processing and return.

  It should be noted that when all reels 41L, 41C, and 41R are not stopped (NO at S11), when they do not match any winning symbol (NO at S12), or when they are not bonus winning symbols (NO at S15) If NO in S17, the process immediately returns.

  For example, in the lottery process of FIG. 5, when the BIG bonus flag is established (YES in S4), a notification screen as shown in FIG. 7A is displayed on the liquid crystal display unit 22 in S5. Of course, since the count value of the number of games at this time is “0” (NO in S6), even if the count value of the number of games becomes “1” in S7, the threshold value “3” is not reached ( NO at S8). Accordingly, in the winning determination process of FIG. 6, if the stop display symbols of the reels 41L, 41C, 41R do not match the BIG basic symbol (see FIG. 4B) (NO in S12), the medal payout process (S13) Neither the BIG bonus process (S16) is executed.

  However, since the BIG bonus flag remains in the ON state (YES in S4), the next game (the incremented game count value in S7 is “2”; NO in S8) succeeds in the eye-opening operation, If the stop display symbols of the reels 41L, 41C, 41R coincide with the BIG basic symbols (YES in S12), a medal payout process (S13) and a BIG bonus process (S16) are executed.

  However, in the case of a beginner level player who is unfamiliar with the pushing operation, when the pushing operation repeatedly fails and the game count value reaches the threshold value “3” (YES in S8), a bonus is given in S9. BIG bonus substitute symbol 1 (see FIG. 4B) is additionally stored in the BIG bonus basic symbol previously stored as the winning symbol. When the game number count value reaches the threshold value “6” (YES in S8), BIG bonus substitute symbol 2 (see FIG. 4B) is additionally stored as a bonus winning symbol in S9. Further, when the game count value reaches the threshold value “9” (YES in S8), BIG bonus substitute symbol 3 (see FIG. 4B) is additionally stored as a bonus winning symbol in S9. Therefore, when the game number count value reaches “9” (YES in S8), the bonus winning symbol displayed on the liquid crystal display unit 22 in S10 is the BIG bonus basic symbol as shown in FIG. 7B. And BIG bonus substitute symbols 1 to 3 in total. Although the case of the BIG bonus has been described here, the same applies to the case of the REG bonus.

  As described above, when the CPU 31 has established the bonus flag, the symbol stopped and displayed on the reels 41L, 41C, 41R does not match the basic symbol stored in advance as the bonus winning symbol (in S15 of FIG. 6). In the case of NO and NO in S17, each time three games are digested after the bonus flag is established, a substitute symbol that can be awarded a bonus in the same manner as the basic symbol is sequentially added and stored as a bonus winning symbol one by one (FIG. 5). (See S9). Therefore, for a beginner level player who is unfamiliar with the pushing operation, even if the basic symbols cannot be stopped and displayed on the reels 41L, 41C, 41R, the additional number of games can be stored as a bonus winning symbol by overlapping the number of games. Depending on the substitute symbol, a bonus can be won and a bonus game is executed (see S16 or S18 in FIG. 6). As a result, it is possible to reduce the disadvantage that occurs after the bonus flag is established and before winning the bonus, thereby suppressing the loss. Therefore, the disparity of disadvantage that is likely to occur between the advanced level player and the beginner level player is narrowed before winning the bonus after the bonus flag is established.

  Further, every time a substitute symbol is additionally stored as a bonus winning symbol, all bonus winning symbols including the additionally stored substitute symbol are displayed on the liquid crystal display unit 22 (S10 in FIG. 5 and FIG. 7B). Therefore, it is possible to notify the player that the bonus winning is possible not only by the basic symbol but also by the substitute symbol. Therefore, even a beginner level player who is unfamiliar with the pushing operation can operate the stop buttons 16L, 16C, and 16R calmly by displaying the substitute symbols.

Furthermore, the following modifications may be added to the present embodiment.
(1) The timing for additionally storing (setting) the substitute symbol as a bonus winning symbol (special role winning symbol) was inserted after the bonus flag was established instead of the number of games digested after the bonus flag (special role flag) was established. You may count by the number of medals (the number of game media) or the number of medals lost after the bonus flag is established. Alternatively, the number of digest games, the number of inserted medals, and the number of lost medals may be appropriately combined.

(2) When the symbols stopped and displayed on the reels 41L, 41C, 41R (symbol display means) coincide with the substitute symbols in a state where the CPU 31 (special role executing means) has established the bonus flag, The bonus game can be executed under a game condition different from the case where they match. Specifically, when a bonus winning is made with a substitute symbol, the small role winning probability during the bonus game can be set to be different from that when the bonus winning is made with the basic symbol.

  In this case, preferably, when a bonus winning is made with a substitute symbol, no overshoot occurs due to the pull-in control of the reels 41L, 41C, and 41R during the bonus game (that is, the winning symbol does not have to be pressed). A small role (for example, 15 pieces, 3 pieces that can be missed by the pull-in control of the reels 41L, 41C, 41R) with a relatively high winning probability for the small portion (for example, 8 pieces), which is always aligned) , Two winning combinations) should be set relatively low. As a result, even a beginner-level player who is unfamiliar with the pushing operation can reduce the frequency of miss-outs and minimize the disadvantage (loss) after winning a bonus.

(3) In (2), the small role winning probabilities in the bonus game won with the substitute symbol are varied, but other game conditions, for example, the number of symbols that can be retracted in the reel retracting control may be varied. Specifically, it is possible to set a maximum of 4 symbols that can be drawn when winning a bonus with basic symbols, and a maximum of 5 symbols that can be pulled when winning a bonus with a substitute symbol.

  In short, it is desirable to change the game conditions so that winning in a bonus game is easier when winning a bonus with a substitute symbol than when winning with a basic symbol.

  The present invention can also be applied to a slot machine (commonly called parrot) that uses a game ball as a game medium.

The front schematic diagram which shows an example of the slot machine which concerns on this invention. FIG. 2 is a block diagram showing an electrical configuration of the slot machine of FIG. 1. The conceptual diagram of ROM and RAM of the main board | substrate shown in FIG. FIG. 3 is an explanatory diagram of a reel arrangement and a winning combination of the slot machine of FIG. The flowchart which shows the lottery process performed according to the start of a game. The flowchart which shows the winning determination process performed after a lottery process. The figure which shows the example of a display of a liquid crystal display part. The figure which shows the additional setting example of a bonus winning symbol.

Explanation of symbols

1 slot machine 15 start lever (game starting means)
16L, 16C, 16R Left, middle, right stop button (stop means)
22 Liquid crystal display (game state display means; special prize winning symbol display means; effect display means)
31 CPU (role lottery means; special role execution means; special role winning symbol addition means)
33 RAM (special role winning symbol storage means)
33a Bonus winning symbol data storage area 33b Game count area (game counter)
41L, 41C, 41R Left, middle, right reel (design display means)

Claims (5)

Game starting means operated by the player to start the game;
In accordance with the operation of the game starting means, a lottery means for determining a winning combination including a BIG bonus combination as a special combination and establishing a winning winning combination flag;
A symbol display means for variably displaying a plurality of types of symbols;
Stop means operated by the player in order to stop the change display of the symbols by the symbol display means;
In a state in which the combination lottery means has passed a flag of the BIG bonus combination, when the basic pattern set in advance as possible winning a BIG bonus combination winning symbol to the BIG bonus combination is stopped and displayed on the symbol display unit A special combination executing means for determining that the BIG bonus combination is a prize and executing the BIG bonus combination game ;
After the combination lottery means establishes the BIG bonus combination flag, based on the result of the game in which the basic symbol is digested without being stopped and displayed on the symbol display unit, the BIG bonus combination is similar to the basic symbol. And a special role winning symbol adding means for additionally setting a substitute symbol that can be won as the BIG bonus winning symbol winning symbol,
The special combination executing means determines that the BIG bonus combination is won even when the substitute symbol set additionally by the special combination winning symbol addition unit is stopped and displayed on the symbol display means, and the BIG bonus combination game A slot machine characterized by executing. The special won winning symbol adding means, in a state in which the combination lottery means has passed a flag of the BIG bonus combination, the basic pattern and the even substitute symbols either the symbol is set as the BIG bonus combination winning symbol The number of the BIG bonus winning symbol is increased by sequentially setting the substitute symbols as the cumulative number of the games based on the number of operations of the game starting means increases when the display means is not stopped and displayed. 2. The slot machine according to 1. In addition to the symbol display means, a game state display means capable of notifying the player that the BIG bonus combination flag has been established is provided.
The slot machine according to claim 1 or 2, wherein the game state display means displays the basic symbol and the substitute symbol set as the BIG bonus winning symbol. The said gaming state display means, wherein each time the special won winning symbol adding means adds sets the stand design as the BIG bonus combination winning symbol, the BIG bonus combination winning symbol including stand symbols that are added set appears The slot machine according to claim 3. When the substitute symbol is stopped and displayed on the symbol display means in a state where the special lottery means sets the BIG bonus symbol, the special symbol executing means is configured to display the basic symbol as the symbol display means. 5. The game according to claim 1 , wherein a game condition is changed so that a winning in the BIG bonus combination game is easier to obtain than when the game is stopped and displayed, and the BIG bonus combination game is executed. The described slot machine.

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