JP2604384B2 - Ball game machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a ball game machine in which a variable winning ball device is provided on a game board, and in particular, a variable indicator is provided at a position related to the variable winning ball device. The present invention relates to a ball-and-ball game machine in which the probability of a big hit is changed based on the display of a variable display to give the game more complexity and variety and to increase the interest of the player.

[Conventional technology]

Generally, a prize ball device in a ball game machine, for example, a pachinko machine, has a movable member that opens and closes depending on whether or not there is a prize in a predetermined prize port provided on a game board, and is hit when an open state is created. There has been proposed a device having a variable winning ball device for receiving a ball and further opening a movable member by winning a specific winning opening of the winning ball device (for example, Japanese Patent Publication No. 62-2549). .

In such a conventional ball game machine, winning a predetermined winning opening that opens the movable member and winning a specific winning opening of the variable winning ball device are of great interest to the player,
This is a major factor in increasing interest in games.

[Problems to be solved by the invention]

However, such a variable winning prize ball device in a conventional ball game machine has a jackpot as soon as a ball hits a specific winning opening, and the player's interest is limited to winning a ball in a specific winning opening only. Since the player is directed, the game has a disadvantage that the content of the game is simplified and the player gets tired. In addition, each time there is an output from the specific condition detecting means, the predetermined number of times is continued. However, since there is an upper limit on the number of continuous times, if the game is continued next time without giving a small game value (for example, a small winning ball), the previous big hit There is a disadvantage that the game value cannot be sufficiently received by the player and the player cannot be satisfied.

The present invention is intended to solve the above-mentioned problems, and provides a further change in the content of the game to give more complexity and diversity, prevent the game from becoming monotonous, and give the game a depth. An object of the present invention is to provide a ball game machine capable of attracting a player's interest.

[Means for solving the problem]

Therefore, the present invention provides a ball game machine having a prize area formed on a game board, in which a first state which is disposed on the game board and which is advantageous for the player and a second state which is disadvantageous for the player. A variable winning ball device that can be changed, an electric drive source for driving the variable winning ball device, and a possible display device that is provided at a position related to the variable winning ball device and that can be variably displayed in a plurality of display states; A special prize port arranged in the prize space of the prize ball device, a specific prize ball detecting means for detecting a prize ball prize in the specific prize port, and a variable display device in relation to a detection output of the specific prize ball detection means. When the display result becomes a predetermined display result, the specific condition detecting means for detecting that the condition for changing the variable winning ball device to the first state is satisfied, and the detection output of the specific condition detecting means, Variable winning ball device (1) a restricting condition detecting means for detecting that a condition for restricting the first condition is satisfied; and an electric control so that the variable winning ball device is in a first state based on a detection output of the specific condition detecting means. Drive control means for controlling the drive of the drive source, and driving control of the electric drive source such that the variable winning prize device is in the second state based on the detection output of the regulation condition detection means; and detection output of the regulation condition detection means. After the variable prize ball device enters the second state based on the probability change, the probability that the display result of the variable display device becomes the predetermined display result in relation to the detection output of the specific prize ball detecting means is changed. And means.

[Action]

In the ball game machine of the present invention, the variable display state of the variable display device is determined in advance when it is detected that the ball of the player has entered a specific winning opening disposed in the winning space of the variable winning ball device. When the displayed state becomes, for example, the number “7”, the jackpot is determined to be a jackpot. When the jackpot is reached, the display state that becomes a jackpot is increased each time the jackpot ends, for example, “3”, “5”,
Even if "7" is used, the probability of the jackpot is increased by increasing the jackpot, so that the profit can be sufficiently received for the player, the depth of the game can be increased, and the interest of the player can be further attracted. Examples Hereinafter, examples will be described with reference to the drawings.

FIG. 1 is a front view of an embodiment of a ball game machine according to the present invention,
FIG. 2 is a rear view of the ball game machine of FIG. 1, FIG. 3 is a front view of the variable winning ball apparatus of FIG. 1, and FIG. 4 is a rear view of the variable winning ball apparatus of FIG. In the figure, 10 is a ball game machine, 12 is a front frame, 14 is a game board, 16 is a variable winning prize ball device, 18 is a variable display (digital), 20a, 20b, 22 are starting winning holes, 24, 26a, Two
6b is a lamp, 28 is a speaker, 30a, 30b is a start winning ball detection switch 1, 32 is a starting winning ball detection switch 2, 34 is a specific winning ball detection switch, 36 is a 10 count detection switch,
38 is a mounting board, 40 is a winning space, 42 is a winning ball receiving frame, 44 is a partition member, 46 is a specific winning opening, 48a and 48b are normal winning openings, 50a and 5
0b is an opening / closing wing piece, 52a and 52b are rotation axes, 54 is a distribution member, 56 is an upper front decorative plate, 58 is a lower front decorative plate, 60 is an LED (for displaying the number of continuous times), and 62 is an LED (10 counts). 64) LED
66 is a solenoid mounting plate, 68 is a solenoid, 70 is a plunger, 72 is a return spring, 74 is an operating member, and 76a and 76b are link members.

In the figure, the variable winning ball device 16 is provided with a pair of opening and closing wing pieces 50a, 50b on the left and right, and it is detected that the ball fired on the game board 14 has won the starting winning ports 20a, 20b, 22. Then, the plunger 70 is pulled upward by the operation of the solenoid 68 based on the signal, and the operating member 74 connected to the plunger 70 moves upward, so that the plunger provided at the tip of the operating member 74 is moved. The link members 76a and 76b engaged with the holes are pushed upward. Next, when the solenoid 68 is deenergized, it returns to the original position by the spring 72, and the opening / closing wing pieces 50a, 50b open and close once around the rotating shafts 52a, 52b (in the case where the winning winning opening 20a, 20b is won). ) Or 2
Times (in the case of winning in the starting winning opening 22).

In the ball game machine of the present invention, a variable display (digital) 18 is provided on the front of the variable winning ball device 16, and the numbers 0 to 9 are digitally displayed at a predetermined speed, for example, at a speed that cannot be read. Then, the operation is stopped by the detection output of the specific winning ball detection switch 34. Variable winning ball device 16
Is provided with a specific winning opening 46 and a normal winning opening 48a, 48b, a sorting member 54 is provided above these winning openings,
Driven by a drive source (not shown), the winning balls are sorted.

Opening / closing wing pieces 50a, 50 by winning the starting winning prize openings 20a, 20b, 22
While b opens and closes, a hit ball enters the specific winning opening 46 of the variable winning ball device 16, and when the specific winning ball detection switch 34 detects this, the variable display of the variable display device 18 is stopped. If it is detected that the display at this time is “7”, for example,
It is a so-called jackpot, and the opening / closing wing pieces 50a and 50b are continuously opened and closed up to 18 times and up to 10 pieces based on the detection signal.

The LED (for jackpot number display) 64 indicates which number of the variable display 18 is a jackpot, and "7"
If a big hit is made, the LED above “7” is turned on. As will be described later, when the probability of a jackpot increases and the case of "3" or "5" is added, similarly, the LED corresponding to the number is turned on to notify the player.

The number of jackpots is counted by the jackpot counter,
The present invention changes the probability of a big hit based on the value of the big hit counter. As shown in FIG. 3, the LED (for displaying the number of continuations) 60 is lit to notify the player of the number of continuations.

The 10-count detection switch 36 detects a prize to the variable prize ball device 16 such as the normal prize ports 48a and 48b. As described below,
In the present embodiment, when the jackpot is reached, the probability of the jackpot is further increased, and during the jackpot, that is, when the value of the 10-count counter that counts the detection output of the 10-count detection switch 36 reaches, for example, “5”, Or, when the opening and closing wing pieces 50a and 50b open and close, for example, eight times,
The number of jackpots on the variable display 18 is increased to increase the jackpot probability.

The number of detection outputs from the 10-count detection switch 36, that is, the number of winning balls, notifies the player by lighting an LED (for 10-count display) 62. And, during the opening and closing of the opening and closing wing pieces 50a, 50b, when the number of winning balls to the variable winning ball device 16 becomes ten,
Even if the number of opening / closing of the opening / closing wing pieces 50a, 50b is less than 18, the opening / closing wing pieces 50a, 50b are forcibly closed.

As described above, in the opening / closing control of the opening / closing wing pieces 50a and 50b associated with the winning in the specific winning opening 46 and the display of the variable display 18 becoming a specific display and a jackpot, the maximum number of opening / closing times of the opening / closing wing pieces Alternatively, the upper limit of the number of winning balls is determined in the meantime, so that the gaming value given by one jackpot control state is not separated for each gaming machine.

In addition, as the ball hitting the specific winning opening 46 wins and the display of the variable display 18 becomes a specific display, the opening and closing wing pieces 50a, 5
When it is detected that the specific winning opening 46 has been won and the display of the variable display 18 has become a specific display while 0b is being opened and closed, the opening and closing control of the opening and closing wing pieces 50a and 50b is updated. For example, if the fourth ball enters the specific winning opening 46 when the opening / closing wing pieces 50a, 50b enter the seventh opening / closing operation and the display of the variable display 18 becomes a specific display, from that time, that is, Although the opening and closing of the opening and closing wing pieces 50a, 50b has not been performed 18 times, and 10 winning balls have not been won in the meantime, the opening and closing wing pieces 50a, 50b are newly updated up to 18 times from that time,
Or, it will be opened and closed until ten winning balls are won, whichever comes first.

And the opening and closing wing pieces 50a, 50b accompanying such a jackpot
Up to eight updates of the opening / closing control (continuation number of jackpots) are allowed. As shown in FIG. 3, an LED (for displaying the number of continuations) 60 is lit to notify the player of the number of continuations. These controls are performed by the ROM of the control circuit described later.
It is executed in accordance with a program built in. Limiting the number of updates in this way limits the maximum value of the game that the player can obtain, makes it easier to manage and manage the amusement arcade where the ball-and-ball game machine is located, and provides fair services to the player. This is done because of the advantage that it can be used.

FIG. 5 is a block diagram showing the configuration of the control circuit of the above embodiment.

In the figure, the microprocessor unit (MPU) 80
The ROM 82 stores a program for controlling a ball and ball game machine, and when the power is turned on, the MPU 80 reads out and starts up. The MPU 80 inputs detection data from various sensors to the input circuit 86
, And controls the winning ball device and the like.
For example, when a start winning prize ball detection switch 30a, 30b, 32 composed of a micro switch or the like detects a start prize, a detection signal is issued from the start prize ball detection circuit 100 and is read into the MPU 80 via the input circuit 86. A control signal is output from the MPU to open or close the blades 50a, 50b twice or once, and the solenoid 68 is energized through the output circuit 88 and the solenoid circuit 106, and the blades are opened and closed as described above. 50a, 50b
Opens and closes twice or once. When a specific winning is detected by the specific winning ball detecting switch 34 (see FIG. 2) during the opening / closing operation of the opening / closing wing pieces 50a and 50b, the specific winning ball detecting circuit 102
A specific winning detection signal is issued from the
The digital display 18 is read by the MPU 80 and stopped via the output circuit 88 and the digital display drive circuit 108. If the number of the stopped display is "7", a big hit occurs, and the solenoid 68 is similarly energized. Open / close wing pieces 50a, 50b
Is driven up and down 18 times. The number of winning balls at this time is detected by a 10-count detection switch 36 (see FIG. 2).
The signal from the 10-count detection circuit 104 is read into the MPU 80 via the input circuit 86, and the number of winning balls is displayed on the LED (for 10-count display) 62 via the LED circuit 110.

When ten winnings are detected by the ten-count detection switch 36, the opening / closing operation ends even if the number of opening / closing is less than 18 times. During this time, when the specific winning is detected again and the display of the stopped digital display 18 is detected to be the specific display, the opening / closing control of the opening / closing wing pieces 50a and 50b is updated, and the number of continuations is controlled via the LED circuit 110. Is displayed on the LED (for displaying the number of continuations) 60. The lamps 24, 26a, 26b and the speaker 28 are driven by the lamp circuit 112 and the sound generator 90 when a specific winning is detected, for example, and function to visually and acoustically excite the atmosphere.
The power-on reset circuit 92 is for giving a reset pulse to the MPU when the power is turned on to reset the MPU, and the clock generation circuit 94 and the pulse divider circuit 96 are used for timing various control signals of the machine. The clock signal is used to generate an interrupt pulse to the MPU for giving priority to a specific process. The address decode circuit 98 decodes the address data from the MPU and inputs / outputs the input / output circuits 86 and 88, the RAM 84, and the ROM 84, respectively.
This is for issuing a chip select signal for accessing the 82. Then, a predetermined voltage and current are supplied to each part of the ball game machine by the power supply circuit 116.

Next, the operation of the variable winning ball apparatus will be described in more detail with reference to the operation flow of FIG.

First, in FIG. 6 (a), the power of the ball game machine is turned on.
Start and initialize (Step 20)
0). In step 201, the start winning ball detection switch 2 (FIG. 2) for turning the opening / closing wing pieces 50a and 50b to open and close twice is turned on.
In step 202, the open / close wing pieces 50a, 5
Start winning prize ball detection switch 1 that performs opening / closing operation once at 0b
It is determined whether (FIG. 2 30a, 30b) is ON. Both are ON
If not, the process returns to step 201 to wait for the start winning detection. If the start winning ball detection switch 2 is ON, the opening / closing process of the opening / closing wing pieces 50a and 50b is performed twice, the continuation count counter for counting the number of continuations is cleared, and a variable prize ball device is set.
A 10-count counter for counting the number of winning balls to 16 is cleared (step 203). If the starting winning ball detection switch 1 is ON, the opening / closing process of the opening / closing wing pieces 50a and 50b is similarly performed, and the number of continuous times is counted. The counter is cleared and the 10-count counter is cleared (step 204), and the process proceeds to step 205.

In step 205, it is determined whether or not the specific winning ball detector is ON. If not, the process returns to step 201. When a winning in the specific winning opening is detected, the variable display 18 is stopped (step 206), and it is determined whether or not the digital display is "7" (step 207). Proceed to 212. If it is not "7", it is determined whether or not the stopped digital display is "3" (step 20).
8) If "3", it is determined whether the value of the jackpot counter is "1" or "2", that is, whether the first or second jackpot has already occurred (step 209). Step 212 when "1" or "2"
Proceed to. If the digital display stopped in step 208 is not "3", or if the value of the jackpot counter is not "1" or "2" in step 209, step 21
Proceeding to 0, it is determined whether the stopped digital display is "5". Digital display is "5" at step 210
If not, the process returns to step 201. If it is "5", it is determined whether the value of the jackpot counter is "2", that is, whether or not the second jackpot has already occurred (step 211). If the value of the jackpot counter is not "2", the process proceeds to step 212.
Return to 1. In step 212, the jackpot count is incremented by "1", and it is determined whether the value of the jackpot counter is "3". If the value is "3", the jackpot counter is cleared (step 214). Directly proceeds to step 215 in FIG. In other words, when no jackpot has been generated even once, only the digital display stopped at "7" becomes a jackpot, and after the first jackpot has been generated, the jackpot becomes a jackpot at "7" and "3". "7" after the second jackpot
The probability of becoming a big hit for each big hit is increased so as to make a big hit at “3” and “5”.

In FIG. 6 (b), when a big hit state is reached, there is no point in performing one opening / closing process and two opening / closing processes of the opening / closing wing pieces 50a and 50b, so that this process is cleared. It deactivates, clears the 18 opening / closing processes, and increments the continuation number counter by "+1" to count that there is one specific display (step 215). In order to process the ball that has entered the winning opening before the jackpot and to provide a processing time for notifying that the jackpot has been reached, a drive control preparation period elapse process is performed (step 216), and then the 10 count counter is cleared. Then, the opening / closing process of the opening / closing wing pieces 50a, 50b is performed 18 times (step 218).
Note that the time in step 216 is specifically 2 to 5
On the order of seconds.

After executing the processing of these steps, it is determined by the specific winning ball detection switch 34 whether or not there is a specific winning ball in this jackpot state (step 219). The container 18 is stopped (step 22
0), it is determined whether or not the digital display is "7" (step 221). If it is "7", it is determined whether or not the specific display has already been performed eight times, that is, whether or not the value of the continuation number counter has reached "8" (step 222).
If the number has not reached eight, the process returns to step 215, and the jackpot pre-processing is executed again. If the specific display has already been performed eight times, specific display invalidation processing is executed (step 22).
3), proceed to step 224. When there is no specific winning ball in step 219 or when the stopped number of the variable display 18 is not “7” in step 221, the process also proceeds to step 224, and based on the output from the 10 count detection switch 36, the winning ball is determined. Is determined to have reached 5 (step 224). If the number of winning balls has not reached 5, it is determined whether or not the open / close wing has been opened and closed eight times (step 225). If not, return to step 219.
When the number of winning balls reaches five, and when the open / close wing pieces are opened and closed eight times, the process proceeds to a specific display probability increasing process (step 226), which is a process for changing the jackpot probability as described below.

After executing the specific display probability increasing process (step 226), it is determined by the specific winning ball detection switch 34 whether or not there is another specific winning ball in the state of the big hit (step 22).
7) As in the case described above, if it is ON, the variable display 18 is stopped (step 228), and whether the digital display is "3", "5" or "7", that is, The probability is increased and the judgment is made (step 22
9). If any of "3", "5" or "7", it is determined whether the specific display has already been performed eight times (step 23).
0) If the number has not reached eight, the specific display probability increasing process performed in step 226 is cleared (step 231), and the process returns to step 215. If the specific display has already been performed eight times in step 230, specific display invalidation processing is executed (step 232), and the process proceeds to step 233. Also, in step 229, if the digital display is not any of "3", "5", and "7", the process proceeds to step 233.

In step 233, it is determined whether or not the value of the 10-counter has reached "10", and in step 234, it has been determined whether or not the opening and closing have been performed 18 times.
The game is performed with the probability of the jackpot being high and the same processing is repeated. If one of steps 233 and 234 becomes YES, the opening / closing process is ended 18 times (step 235), and the process proceeds to step 236 in FIG. 6 (c).

FIG. 6 (c) shows processing after waiting for 2 seconds to receive the remaining balls after the opening / closing processing has been completed 18 times or until the start winning. First, the start winning ball detection circuit is activated (step 236).
It is determined whether or not the starting winning ball detection switch 2 (FIG. 2) for causing the opening and closing operations to be performed twice on the a and 50b is ON.
At 239, it is determined whether or not the start winning ball detection switch 1 (FIGS. 30a, 30b) for causing the opening / closing wing pieces 50a, 50b to perform the opening / closing operation once is ON. If any of them is ON, the specific display probability increasing process is cleared (steps 238 and 240), and the process returns to step 203 and step 204 in FIG. If both are NO, the process proceeds to step 241 where it is determined whether the specific winning ball detection switch 34 is ON. ON with the remaining balls winning
If so, the variable display 18 is stopped (step 242),
It is determined whether the digital display is "3", "5" or "7" (step 243). If it is any of these numbers, it is determined whether or not the specific display has already been performed eight times (step 244). If the number has not reached eight, the process returns to step 215 in the flow of FIG. If the number has reached eight times, the specific display invalidation process is executed (step 245), and the process proceeds to step 246. Also, if the specific winning ball detection switch is not ON in step 241, and if the digital display is not any of "3", "5", and "7" in step 243,
Proceed to 246.

In step 246, since it takes about 2 seconds to process the remaining balls, it is determined whether 2 seconds have elapsed after the opening / closing process has been performed 18 times. If not, the process returns to step 237, and after 2 seconds has elapsed, step 247 occurs. Proceed to specific display probability increase processing,
The continuation number counter and the 10-counter are cleared, and the process returns to the initial state in FIG.

In the above embodiment, the probability of the jackpot being increased by the jackpot is increased, and the probability of the jackpot is increased in the latter half of the jackpot, but the probability is not changed during the jackpot. You may.

Further, in the above embodiment, the probability of a big hit is increased each time the big hit ends, and the initial state is returned when a certain probability is reached. For example, a condition may be added such that the probability is limited to the case where the probability is changed, or the probability may be randomly changed for each big hit.

Further, in the above embodiment, as a method of changing the probability, the number of numbers of the jackpot display is changed, but the number of the jackpot is determined in advance, and the display time of the number is different from the display time of other numbers. You may do it. In addition, the change of the probability in the middle of the jackpot is performed when the 10 count value is “5” or the number of times of opening and closing is eight, but it is needless to say that the value can be appropriately selected.

Further, in the above embodiment, the display which is constantly variably displayed is stopped by the detection output of the specific winning ball detection switch 34.However, the display is always stopped, and the detection is output by the specific winning ball detecting means. It may be variably displayed and stopped after a predetermined time elapses, and the big hit control may be performed using the number at that time.

Further, the variable winning ball device is not limited to the opening and closing wing pieces, but may be an opening and closing plate that opens and closes forward or a sliding member that slides to the left and right. The time may be controlled.

The electric drive source is not limited to the solenoid, and a motor may be used.

In the above embodiment, the variable display device is LE.
Although the digital display by D was used, a plurality of light-emitting sources (roulette type), liquid crystal display, display drum, leaf type display, etc. may be used. The variable display device may be provided integrally with or separately from the device, and not only one variable display device but also a plurality of variable display devices may be provided to control the jackpot by using a combination of these displays.

In the above embodiment, one specific winning port and two normal winning ports are provided, and the specific winning is distributed by the distribution member. However, the distribution member is omitted as the specific winning port. You may do it.

In the above embodiment, the example in which the jackpot continues is described. However, the present invention may be applied to a type in which the jackpot does not continue.

Further, in the above embodiment, the description has been given mainly of the pachinko machine, but the present invention is not limited to the pachinko machine, and can be applied to other similar ball game machines such as a so-called arepachi combining an arrangement ball and a pachinko machine. Needless to say.

The pachinko gaming machine in each of the above-described embodiments borrows pachinko balls when playing a game, and is not limited to playing pachinko balls. For example, ball-lending data such as a magnetic card, an optical card, or an IC card is recorded. The data recording medium is used, the recording medium is applied to a pachinko gaming machine, so that a pachinko ball built in the pachinko gaming machine can be played, so that the player does not carry a pachinko ball, Is also good. In this case, instead of paying out prize balls by winning pachinko balls, etc.,
Display the prize ball score to which the points are sequentially added,
The score, that is, the premium ball data may be recorded on the above-described recording medium, so that it may be configured in place of the possessed ball.

〔The invention's effect〕

As described above, according to the present invention, a game can be given depth by adding that the display state of the variable display device becomes a predetermined display state as a condition for a big hit, and Since the probability that the display result of the variable display device becomes a predetermined display result after the end changes, the probability of the next big hit can be changed each time the big hit ends, and the game can have depth. In particular, when the probability that the display result of the variable display device becomes a predetermined display result is improved, the probability of the next big hit is improved after the end of the big hit, and the big hit is easily continued. Can be obtained.

[Brief description of the drawings]

1 is a front view of an embodiment of a ball game machine according to the present invention, FIG. 2 is a rear view of the ball game machine of FIG. 1, FIG. 3 is a front view of the variable winning ball device of FIG. FIG. 4 is a rear view of the variable winning ball apparatus of FIG. 3, FIG. 5 is a block diagram showing a configuration of a control circuit of the embodiment of the present invention, and FIG. 6 is a diagram showing an operation flow of the embodiment of the present invention. It is. 10… ball game machine, 16… variable winning ball device, 18… variable display (digital), 20a, 20b, 22…
a, b ... winning winning ball detection switch 1, 32 ... starting winning ball detecting switch 2, 34 ... specific winning ball detecting switch, 36 ...
… 10 count detection switch, 46 …… Specific winning opening, 48a, 48
b: Normal winning opening, 50a, 50b: Opening / closing wing piece, 54: Distributing member, 60: LED (for continuous count display), 62: LED (for 10 count display), 64: LED ( Jackpot number display).

Claims (1)

(57) [Claims] 1. A ball game machine having a prize area formed on a game board, the game machine being arranged on the game board and changing between a first state which is advantageous for the player and a second state which is disadvantageous for the player. A variable winning prize ball device, an electric drive source for driving the variable prize ball device, a variable display device provided at a position related to the variable prize ball device and capable of variably displaying a plurality of display states, A special winning opening arranged in the winning space of the ball device,
A special winning ball detecting means for detecting a winning ball winning a specific winning opening, and when the display result of the variable display device is a predetermined display result in relation to the detection output of the specific winning ball detecting means,
A specific condition detecting means for detecting that a condition for changing the variable prize ball device to the first state is satisfied; and restricting the variable prize ball device from entering the first state after detection output of the specific condition detecting means. A regulation condition detecting means for detecting that a condition for performing is established, and an electric drive source for driving and controlling an electric drive source so that the variable winning ball device is in a first state based on a detection output of the specific condition detecting means.
A drive control means for driving and controlling an electric drive source such that the variable prize ball device enters the second state based on the detection output of the regulation condition detection means; and a variable prize ball device based on the detection output of the regulation condition detection means. After the second state, a probability changing means for changing the probability that the display result of the variable display device becomes a predetermined display result in relation to the detection output of the specific winning ball detecting means. Ball game machine.