JP2007135842A - Game machine, program and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To give a player an expectation of getting a large amount of gains without stocking winning combinations and to prevent the content of a game from being uniformized. <P>SOLUTION: In a regular mode, when winning a zero combination in a regular game section, the section is shifted to a probability variable preparation section. When winning a minor combination, the probability variable preparation section is finished. When finishing the probability variable preparation section, the regular mode is shifted to a probability variable mode. In the probability variable mode, a winning combination lottery is drawn at a BB winning probability according to the type of the minor combination winning in finishing the probability variable preparation section. When winning a 'cherry' and finishing the probability variable preparation section, a first table 41a is used and the BB winning probability becomes 1/120, when winning a 'bell' and finishing the probability variable preparation section, a second table 41b is used and the BB winning probability becomes 1/30, and when winning a 'watermelon' and finishing the probability variable preparation section, a third table 41c is used and the BB winning probability becomes 1/16. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a gaming machine used in a game hall such as a pachinko parlor.

  In this specification, a pachislot machine is taken as an example as one of the gaming machines, so a medal is given as an example of the gaming medium used in the game. Includes media. In addition, “inserting a medal” includes not only actually inserting a medal into the medal insertion slot but also inserting (betting) a credited medal with a bet button or the like. In addition, the lottery to determine one of the winners and multiple types of winning roles is the winning role lottery, the winning line is the state in which the symbols corresponding to the winning role are aligned on the winning active line, The state until winning is the internal winning.

  Slot machines installed in amusement halls such as pachinko parlors are called pachislot machines. In pachislot machines, medals are given a certain value, and medals earned by playing games can be exchanged for various prizes. In the pachislot machine, for example, a bonus game mode that makes it easier to obtain medals than the normal mode, such as a big bonus (hereinafter referred to as BB) mode and a regular bonus (hereinafter referred to as RB) mode, is set. The BB mode and the RB mode shift when a special winning combination such as BB or RB is won in the winning combination lottery performed in the normal mode and these are further won. In the BB mode and the RB mode, it becomes easier to obtain profits than in the normal mode. Therefore, it is common for a player to play a game by selecting a model that is easy to win BB or RB.

By the way, there is known a pachislot machine having a so-called stock function in which the BB and RB won in the winning combination lottery are stored, and the stored BB and RB are released in subsequent games. In a pachislot machine having a stock function, if a stocked BB or RB is released within a short period, the player can win a huge amount of medals within a short period. For this reason, pachislot machines with a stock function have gained enormous popularity from players. In a pachislot machine having a stock function, the conditions for releasing the stocked winning combination affect the interest of the game, so various conditions are set depending on the game machine. For example, in Patent Document 1, when BB or RB is stocked, it is proposed to release BB or RB and shift to BB mode or RB mode on the condition that the number of times elected as a small role has reached a predetermined number Has been. Thereby, the monotony of the game until BB or RB is released can be eliminated, and the game can be performed while maintaining a sense of expectation for the release of BB or RB.
Japanese Patent Laid-Open No. 2004-97698

  However, in the pachislot machine of Patent Document 1, since the condition for releasing BB or RB does not change regardless of which player plays the game, the player's feeling of achievement when BB or RB is released becomes dilute. , The sense of tension in the game was thin. In addition, when BB and RB are not stocked, even if the condition is achieved, the BB mode and the RB mode are not transferred, which is a cause of raising unfairness in the game. Furthermore, slot machines with a stock function can win enormous amounts of medals in a short period of time as described above. You will be scolded, and it may damage the health of the game. Under such circumstances, it is considered to prohibit the adoption of stock functions under the customs business law and voluntary regulations by slot machine manufacturers. However, under such regulations, the number of medals that a player can acquire becomes uniform and the game becomes monotonous, which may cause the player to lose interest in the slot machine.

  In order to solve the above-mentioned problems, the present invention provides players with a sense of expectation to obtain a large amount of profit without stocking the winning role, and makes the content of the game uniform. It is an object of the present invention to provide a gaming machine, a program, and a recording medium that can prevent the above.

  In order to achieve the above object, the gaming machine according to claim 1 provides a plurality of kinds of small roles with different numbers of paid out game media and a special winning combination that gives the player the right to shift to a special mode. In a gaming machine in which a game is played in a normal mode in which any of a plurality of types of winning combinations including a lottery is determined by lottery and a probability variation mode in which the winning probability of a special winning combination is higher than in the normal mode, the probability variation Providing a plurality of lottery tables that are used in the lottery in the mode and having different winning probabilities for the special winning combination, and the probability variation according to the type of the small role elected in the normal mode before shifting to the probability variation mode Table selection means for selecting the lottery table used in the mode is provided.

  It is preferable that the winning probability of the special winning combination in the lottery table is a probability obtained by multiplying the winning probability of the special winning combination in the normal mode by the number of payouts of the small combination.

  Further, in the normal mode, there is provided a game control means for executing a game with a probability variation preparation section which shifts when winning a section transition combination in a normal game section and a normal game section and ends when winning a small combination. Preferably, the means selects the lottery table corresponding to the type of the small combination won at the end of the probability variation preparation section.

  Note that the program for the gaming machine of the present invention uses the probability variation mode according to the type of the small role won in the normal mode before shifting to the probability variation mode in which the winning probability of the special winning combination is higher than the normal mode. A gaming machine computer is caused to function as a table selection means for selecting a lottery table to be used from among a plurality of lottery tables having different winning probabilities for special winning combinations.

  In addition, the recording medium of the present invention is a lottery used in the probability variation mode according to the type of the small role won in the normal mode before shifting to the probability variation mode in which the winning probability of the special winning combination is higher than that in the normal mode. The computer-readable recording medium stores a program that causes a computer of a gaming machine to function as table selection means for selecting a table from a plurality of lottery tables having different winning probabilities for special winning combinations.

  According to the first aspect of the present invention, a plurality of lottery tables having different winning probabilities of special winning roles that give the right to shift to the special mode that is advantageous to the player are provided, and before shifting to the probability variation mode. Since the lottery table to be used in the probability variation mode is selected according to the type of small role won in the normal mode, if you win a small role that has a higher probability of winning the special winning role, it will be easier to win the special winning role It is possible to give the player a sense of expectation to obtain a large amount of profit without stocking the winning role. In addition, since the winning probability of the special winning combination may change depending on the type of the winning combination, it is possible to prevent the game content from being uniform.

  In addition, since the winning probability of the special winning combination in the lottery table is a probability obtained by multiplying the winning probability of the special winning combination in the normal mode by the number of payouts of the small roles, the larger the number of small roles to be paid out, It becomes possible to increase the winning probability of the role, and to increase the player's expectation by giving a possibility of obtaining a large amount of profit.

  Also, in the normal mode, the game is executed with the probability variation preparation section which is shifted when winning the transition role in the normal game section and the normal game section and ends when winning the small role, and won at the end of the probability variation preparation section Since the lottery table corresponding to the type of the small role is selected, it becomes possible to increase the tension in the game until winning the small role, and to enhance the interest in games other than the special mode game. it can.

  In addition, if you win a small role during the probability variation mode, it will be selected again in the lottery table according to the type of the selected small role, so that you can increase the tension in the game won for the small role during the probability variation mode. It becomes possible, and the interest of the game in the probability variation mode can be enhanced.

  First, the external appearance of the slot machine (game machine) 10 is shown in FIG. 1, and the outline of the game flow of the slot machine 10 will be described. The slot machine 10 is set with three types of game modes: a normal mode, a BB mode (special mode), and a probability variation mode (probability variation mode). In the BB mode, when the winning combination lottery in the normal mode is won and a BB (special winning combination) is won, and the winning combination is made, the process proceeds. In the BB mode, a transition is made to the RB mode in which whether or not to win a specific winning combination (for example, 15 winning combination with 15 medal payouts) accompanied by paying out medals is determined for each game. Since the winning probability of the specific winning combination is set so that the payout rate is higher in the RB mode than in the normal mode, the player is more advantageous in the BB mode than in the normal mode. In the probability variation mode, the BB winning probability is higher than in the normal mode. In the normal mode, a game is performed in a normal game section where a game is played in a normal state and a probability variation preparation section (probability variation preparation section). Probability change section is elected in the winning combination lottery in the normal game section when winning the winning combination (no medal is paid out and only the symbols are arranged at the time of winning, corresponding to the “section transition combination” in the claim) Migrated. The probability variation preparation section ends when the small role is won, and transitions to the probability variation mode when the probability variation preparation section ends. The probability of winning the BB in the probability variation mode is determined by the type of the winning combination that is won at the end of the probability variation preparation section. In addition, when winning a small role during the probability variation mode, the winning probability of BB is reset according to the type.

  The slot machine 10 includes a housing 10 a including a storage box 11 and a front door 12. A display window 13 is provided on the front door 12. A first reel 14a, a second reel 14b, and a third reel 14c are rotatably incorporated in the back of the display window 13. A plurality of types of symbols are arranged at regular intervals on the outer circumferences of the first to third reels 14a to 14c. When the first to third reels 14a to 14c are stopped, three symbols per reel can be observed through the display window 13. A total of five straight winning effect lines 15 in which the symbols of each reel are combined one by one and three by two are set.

  When one medal is inserted from the medal slot 16, the middle winning effective line 15 is activated. When two medals are inserted, the three horizontal winning effective lines 15 obtained by adding the upper and lower winning effective lines 15 to the middle winning effective line 15 are activated. When three medals are inserted, a total of five winning active lines 15 are activated by adding two diagonal lines to the upper, middle and lower tiers.

  In the slot machine 10, it is possible to credit (store) medals up to 50. The number of credited medals is displayed on the credit number display unit 17.

  When the start lever 18 is pressed, the first to third reels 14a to 14c start to rotate all at once. The operation of the stop buttons 19a to 19c is validated after a certain time has elapsed since the rotation of the first to third reels 14a to 14c has started. When the operation of the stop buttons 19a to 19c is validated, the corresponding first to third reels 14a to 14c are individually stopped in response to the press of the stop buttons 19a to 19c.

  A medal tray 20 is provided below the front door 12. When the winning combination wins the medal tray 20, the number of medals corresponding to the type of the winning combination is paid out from the payout slot 21.

  As shown in FIG. 2, the operation of the slot machine 10 is basically controlled by the control board 30. The control board 30 includes a CPU 31 and a memory 32. The CPU 31 is provided with a winning combination determining unit 39 for performing lottery winning in addition to a control unit (table selection unit and game control unit) 31a for controlling the operation of the CPU 31. A game execution program is stored in the ROM area of the memory 32. The control unit 31a reads out the execution program stored in the memory 32 to execute the process in each game mode. The RAM area of the memory 32 is used for temporary storage and rewriting of flags and data used for each game.

  The medal sensor 33 detects an appropriate medal inserted from the medal insertion slot 16, and inputs a medal detection signal to the control unit 31a. The control unit 31a counts the number of inserted 1 to 3 medals based on the detection signal from the medal sensor 33, and determines the number to activate the winning effective line 15.

  The start signal sensor 34 detects that the start lever 18 has been pressed. When pressing of the start lever 18 is detected, a game start signal is input from the start signal sensor 34 to the control unit 31a. The controller 31a rotates the first to third reels 14a to 14c in response to the game start signal, and starts the game process.

  The drive and stop control of each reel is performed by the control unit 31a and the reel drive controller 35. The controller 31a and the reel drive controller 35 constitute reel stop control means. The first to third reels 14a to 14c are attached to the drive shafts of the stepping motors 36a to 36c, respectively. The first to third reels 14a to 14c are controlled by controlling the driving of the stepping motors 36a to 36c.

  The stepping motors 36a to 36c rotate at a rotation angle corresponding to the number of drive pulses supplied from the control unit 31a. For this reason, the control unit 31a controls the rotation angle of the first to third reels 14a to 14c by controlling the number of drive pulses supplied to the stepping motors 36a to 36c, and cuts the supply of the drive pulses to the reels. Determine the stop position. The first to third reels 14a to 14c are integrally formed with reflection signal portions 37a to 37c at their reference positions. Each time the first to third reels 14a to 14c make one rotation, the photosensors 38a to 38c detect passage of the respective reflection signal portions 37a to 37c. Detection signals from the photosensors 38a to 38c are input to the control unit 31a as a reset signal indicating the reference position of the reel.

  The control unit 31a is provided with a pulse counter that counts the number of drive pulses supplied to each of the stepping motors 36a to 36c. When the reset signal is input from the photosensors 38a to 38c, the control unit 31a clears the count value of the corresponding pulse counter. Therefore, the number of drive pulses corresponding to the rotation angle within one rotation of each reel is stored in each pulse counter while being sequentially updated.

  A symbol table is stored in the ROM area of the memory 32. In the symbol table, the number of drive pulses corresponding to the rotation angle from the reference position of each reel is associated with symbol codes indicating symbols arranged on the first to third reels 14a to 14c. The control unit 31a can identify which symbol has moved on, for example, the middle prize winning effective line 15 by monitoring the count value of the pulse counter for each reel while referring to the symbol table, Further, it is possible to predict how much the reel is rotated to move the target symbol onto the winning pay line 15.

  When the rotation of the first to third reels 14a to 14c is started and the rotation speed of the first to third reels 14a to 14c reaches a steady speed, the control unit 31a validates the operation of the stop buttons 19a to 19c. . When the stop button 19a-19c is pressed and a stop signal is input, the control unit 31a and the reel drive controller 35, based on the winning combination lottery result, the first to third reels 14a corresponding to the stop buttons 19a-19c. -14c stop control is performed. Stop control of the first to third reels 14a to 14c is performed by a table system using a stop table.

  The outer peripheral surfaces of the first to third reels 14a to 14c are partitioned into a plurality of frames (in the present embodiment, 21 frames will be described as an example) for each predetermined range. One symbol is assigned to each frame. In the ROM area of the memory 32, a plurality of stop tables referred to by the control unit 31a are stored.

  Each time the stop buttons 19a to 19c are pressed, one of the plurality of stop tables is referred to. In the stop table, when the stop buttons 19a to 19c are pressed, the symbol code of the symbol located on the winning winning line 15 and the number of frames required for the first to third reels 14a to 14c to stop at this time are shown. Are associated. Then, when the stop buttons 19a to 19c are pressed, the control unit 31a refers to the stop table and determines the type of symbols to be stopped on the winning winning line 15.

  In the stop table, the number of frames required until the first to third reels 14a to 14c are stopped ranges from 0 to 4 frames for 5 symbols including symbols on the winning winning line 15, that is, a range of 5 frames (hereinafter referred to as “ (Referred to as “retraction range”). For this reason, stop control of the first to third reels 14a to 14c is performed within a range of five frames. When the stop buttons 19a to 19c are pressed, the winning symbol (the symbol corresponding to the winning combination won in the winning combination lottery) is included in the four consecutive frames from the frame positioned on the winning winning line 15. If so, the stop table is selected so that the winning symbol can be stopped on the winning winning line 15. In this way, the stop control for stopping the symbol located within the drawing range on the winning winning line 15 is referred to as drawing control.

  In the stop table, the pull-in range changes depending on the type of the winning combination won, the order in which the first to third reels 14a to 14c are stopped, and the type of symbols already stopped on the winning pay line 15. A stop table is selected.

  Further, when the stop buttons 19a to 19c are pressed so that the winning combination wins when the winning combination is not won, the stop table is selected so that no winning is generated. That is, a stop table is selected that stops symbols that are not won in combination with symbols that have already stopped. As a result, the winning combination that has not been won in the winning combination lottery cannot be won. Thus, the stop control for stopping the symbol on the winning winning line 15 so that the winning combination does not win is referred to as kicking control.

  The stop control of the first to third reels 14a to 14c is performed by, for example, determining the priority order of symbols to be stopped on the winning winning line 15 according to the type of the winning combination won and the timing when the stop buttons 19a to 19c are pressed. An appropriate method such as a control method to be determined may be used. In this case, when the stop buttons 19a to 19c are pressed, the symbol having the highest priority within the pull-in range is stopped on the winning pay line 15.

  When a game start signal is input from the start signal sensor 34, the control unit 31a operates the winning combination determining unit 39. The winning combination determining unit 39 includes a random number generator (not shown), a random number sampling circuit (not shown), a normal lottery table 40, a probability changing lottery table 41, and an RB mode lottery table (not shown). Yes. The random number generator generates a predetermined number of random values. The random number sampling circuit extracts one of the random number values generated by the random number generator, and the extracted random number value is extracted by the random number sampling circuit, and the extracted random number value is the normal lottery table 40 or the probability variation lottery. The table 41 is collated. In the normal mode, the normal lottery table 40 is used for the random value comparison in both the normal game section and the probability variation preparation section. In the probability variation mode, the probability variation lottery table 41 is used. In the RB mode in the BB mode, the RB mode lottery table is a random number value. Used for verification.

  In each of the lottery tables 40 and 41, a plurality of random value groups are set by grouping all random number values extracted by the random number generator so that the random number values constituting each are different from each other. In each random value group, a small combination with BB and medal payout (in this embodiment, “watermelon”, “bell”, and “cherry” are set as small combinations as an example. I will explain.), 0-piece combination or lose is assigned. Then, BB, a small combination, a zero combination, or a loss is determined depending on which random value group the collated random number value belongs to. When a small role or BB is won, the hopper device 42 is driven and a prescribed number of medals are paid out to the medal tray 20. A payout table in which the type of winning combination is associated with the number of medal payouts is stored in the ROM area of the memory 32, and the control unit 31 refers to the payout table to pay out a prescribed number of medals by the hopper device 42. . The RB mode lottery table is used in the RB mode in the BB mode. In the RB mode lottery table, either a specific winning combination or a loss is assigned to the random value group. Thereby, in the RB mode, only whether or not a specific winning combination is won is determined.

  The probability variation lottery table 41 includes a first table (lottery table) 41a, a second table (lottery table) 41b, and a third table (lottery table) 41c. In the first to third tables 41a to 41c, the sizes of the random value groups are set so that the BB winning probabilities are different from each other.

  If the first table 41a wins the cherry and the probability variation preparation period ends and shifts to the probability variation mode, the second table 41b wins the bell and the probability variation preparation interval ends and shifts to the probability variation mode. The table 41c is used when the watermelon is won and the probability variation preparation section ends and the probability variation mode is entered. Which table is used is identified by a table selection signal input from the control unit 31a. Note that even when a small combination is won during the probability change mode, the first to third tables 41a to 41c are reselected according to the type.

  As shown in FIG. 3, when the cherry wins, the medal payout amount paid out to the player is 2, and when the bell wins the medal payout amount is 8, the watermelon wins. The number of medals to be paid out to the other players is fifteen. Also, the size of the random number group in the normal lottery table 40 is set so that the winning probability of BB in the normal mode is 1/240.

  In the first table 41a, BB winning probability = 1/240 in the normal mode is multiplied by the number of cherry dividends = 2. The probability of 1/120 is set as the BB winning probability. Further, in the second table 41b, the probability of BB winning probability = 1/240 in the normal mode multiplied by the number of Bell payouts = 8 = 1/30 is set as the BB winning probability. Further, in the third table 41c, a probability of 1/16, which is obtained by multiplying the winning probability of BB in normal mode = 1/240 by the number of watermelon payouts = 15, is set as the winning probability of BB.

  Next, the operation of the slot machine configured as described above will be described. As shown in FIG. 4, in the slot machine 10, a game is first performed in the normal game section in the normal mode. When the start lever 18 is pressed after the medal is inserted, the first to third reels 14a to 14c rotate. In addition, the winning combination determination unit 39 performs the winning combination lottery using the normal lottery table 40. When the winning combination lottery is completed and the first to third reels 14a to 14c start to rotate and a certain time has elapsed, the operation of the stop buttons 19a to 19c is validated. When the stop buttons 19a to 19c are pressed, the control unit 31a and the reel drive controller 35 monitor the timing at which the stop buttons 19a to 19c are pressed while referring to the count value of the pulse counter provided for each reel. Stop control of the first to third reels 14a to 14c is performed. When BB is won by winning combination lottery and BB wins, the control unit 31a reads the execution program of the BB mode from the ROM area of the memory 32 and shifts from the normal mode to the BB mode.

  When the winning combination lottery is won, the control unit 31a reads the execution program for the probability change preparation section from the ROM area of the memory 32 and shifts from the normal game section to the probability change preparation section. The probable preparation section ends when a small role is won.

  When the small combination is won in the probability variation preparation section, the control unit 31 a writes the type of the selected small combination in the RAM area of the memory 32. Thereby, the winning probability of BB in the probability variation mode is set. Further, when the small role is won in the probability variation preparation section, the control unit 31a reads the execution program in the probability variation mode from the ROM area of the memory 32, and shifts from the probability variation preparation section to the probability variation mode, that is, the normal mode to the probability variation mode.

  In the probability change mode, the control unit 31a refers to the RAM area of the memory 32 when the winning combination lottery is executed, and identifies the type of the small combination selected at the end of the probability changing preparation section. When the type of a small combination is identified, a table selection signal corresponding to the identified type of small combination is input to the winning combination determination unit 39. Thereby, in the probability change mode, the winning combination lottery is performed with the winning probability of BB corresponding to the type of the small combination selected at the end of the probability variation preparation section.

  The first table 41a is used when winning the cherry and the probability variation preparation section ends, and the winning probability of BB becomes 1/120, and the second table 41b is used when the probability variation preparation section ends after winning the bell. Thus, the winning probability of BB becomes 1/30, and when the probability change preparation section is finished by winning the watermelon, the third table 41c is used and the winning probability of BB becomes 1/16.

  Further, when a small combination is won during the probability change mode, the control unit 31a rewrites the type of small combination written in the RAM area of the memory 32, and a table corresponding to the rewritten type of small combination at the time of winning combination lottery. A selection signal is input to the winning combination determination unit 39. Thereby, the winning probability of BB in the probability variation mode is reset.

  When winning in BB in the probability change mode, the control unit 31a reads the execution program in the BB mode from the ROM area of the memory 32 and shifts from the probability change mode to the BB mode. The control unit 31a accumulates the number of games and writes it in the RAM area of the memory 32 every time the game is played in the probability change mode. When the number of games in the probability variation mode reaches a predetermined number N, the control unit 31a shifts from the probability variation mode to the normal mode and repeats the above processing.

  By performing the game processing as described above, the slot machine 10 can give the player a chance even when not in the BB mode, and can maintain a sense of expectation until shifting to the probability change mode. . Furthermore, since it is possible to give the player a sense of expectation without using the stock function, it is possible to eliminate the unfair feeling of the game that the player recruits when BB and RB are not stocked.

  FIG. 5 shows an example in which a recording medium (CD, flexible disk, IC memory, MO, etc.) 50 is installed in the slot machine 10, and the means shown in the flowchart of FIG. 32, and a program to be realized by the computer 51 is stored. In this case, for example, the lottery tables used in the probability variation mode according to the type of the small role won before shifting to the probability variation mode in which the winning probability of the special winning combination is higher than in the normal mode, A program for causing the computer 51 to function as table selection means for selecting from among a plurality of lottery tables having different winning probabilities is recorded on the recording medium 50. Then, the recording medium 50 is loaded into the reading device 52 and the program is installed in the slot machine 10.

  The program can be distributed to the slot machine 10 using the Internet instead of being installed via the recording medium 50. It is also possible to install the distributed program of the present invention or the program of the present invention read from the recording medium 50 in a personal computer and play a slot machine game on a monitor.

  In the above embodiment, the probability obtained by multiplying the winning probability of BB in the normal mode by the payout number of the small role is used as the winning probability of BB in the probability variation mode. For example, the lottery table and the type of small role used in the probability variation mode are as follows. An appropriate method may be used to select the lottery table to be used in the probability variation mode according to the type of the small role, such as determining the lottery table to be used in the probability variation mode based on the type of the selected small role.

  In the above embodiment, the type of the lottery table to be used in the probability variation mode is determined according to the type of the small role won at the end of the probability variation preparation section. For example, the lottery table is selected according to the type of the small role that was won in the normal mode before the transition to the probability variation mode. If a table is selected, it is not always necessary to set the probability variation preparation section. Moreover, it is not necessary to reset the lottery table in the probability variation mode.

  In the above embodiment, the BB mode is set as the special mode. However, as the special mode, for example, at least one of the first to third reels 14a to 14c is in the non-control state (the stop button is not controlled and the reel stop control is not performed). A challenge time (CT) mode, a replay time (RT) mode in which the winning probability of replay is higher than the normal mode, a notification of the order of pressing the stop button, or An assist time (AT) mode that allows a player to win a prize by encouraging the player to perform an operation associated with the game, such as notifying a symbol to be stopped on the winning line 15, winning a specific winning combination Stock time (ST) mode to store this in the case of a game, a specific winning combination will be drawn only for one game Single bonus (SB) mode that, such as RB mode, may set an appropriate game mode if the advantageous player.

  Note that the present invention is not limited to the reel drive type slot machine, but can be equally applied to other gaming machines such as a slot machine using a liquid crystal panel or the like, or a pachinko machine using a pachinko ball as a game medium.

It is an external view of the slot machine using the present invention. FIG. 2 is a functional block diagram showing an electrical schematic configuration of the slot machine shown in FIG. 1. It is explanatory drawing which shows the relationship between the winning probability of BB in probability variation mode, and the kind of small role elected at the end of probability variation preparation area. It is a flowchart which shows the flow of a game. FIG. 26 is an explanatory diagram when a recording medium storing a program is installed in a slot machine.

Explanation of symbols

10 Slot machines (gaming machines)
30 Control board 31 CPU
31a Control unit (table selection means and game control means)
41 Lottery table for probability change 41a First table (lottery table)
41b Second table (lottery table)
41c 3rd table (lottery table)
50 recording medium 51 computer

Claims (6)

A lottery that includes multiple types of small roles with different game media payout numbers and a special winning role that grants the right to transition to a special mode in which the player has an advantage is usually determined by lottery In gaming machines where games are played in the mode and the probability variation mode in which the winning probability of the special winning combination is higher than the normal mode,
A plurality of lottery tables that are used in the lottery in the probability variation mode and have different winning probabilities for special winning roles;
A gaming machine, comprising table selection means for selecting the lottery table to be used in the probability variation mode according to the type of the small combination won in the normal mode before shifting to the probability variation mode.   The gaming machine according to claim 1, wherein the winning probability of the special winning combination in the lottery table is a probability obtained by multiplying the winning probability of the special winning combination in the normal mode by the number of payouts of the small combination. In the normal mode, there is provided a game control means for executing a game with a probability variation preparation section that shifts when winning a section transition combination in a normal game section and a normal game section and ends when winning a small combination;
The gaming machine according to claim 1 or 2, wherein the table selection means selects the lottery table corresponding to the type of the small combination won at the end of the probability variation preparation section.   The said table selection means re-selects in the said lottery table according to the kind of winning combination in the said probability variation mode, The selection means according to any one of Claims 1-3 characterized by the above-mentioned. Gaming machine.   The lottery tables used in the probability variation mode differ from each other according to the type of the small role selected before the transition to the probability variation mode in which the winning probability of the special winning combination is higher than the normal mode. A program for causing a computer of a gaming machine to function as table selection means for selecting from among a plurality of lottery tables.   A computer-readable recording medium on which the program according to claim 5 is recorded.

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