Patent Publication Number: US-2007123339-A1

Title: Gaming machine

Description:
CROSS-REFERENCE TO THE RELATED APPLICATIONS (S)  
      This application is based upon and claims a priority from the prior Japanese Patent Application No. 2005-342602 filed on Nov. 28, 2005, the entire contents of which are incorporated herein by reference.  
     BACKGROUND OF THE INVENTION  
      1. Field of the Invention  
      The present invention relates to a gaming machine which provides a game awarding a payout in accordance with a selection element selected by a player.  
      2. Description of Related Art  
      In a conventional gaming machine, such as a slot machine disclosed in U.S. Pat. No. 6,127,815, for example, when a player selects one selection element among plural selection elements which are displayed on a display device, a bonus game which is a game awarding a payout in accordance with the selection element selected by the player is executed. However, since the payout is awarded in accordance with only the selection element selected by the player, it is difficult for the player to anticipate a payout in accordance with a selection element not selected by the player.  
      Hence, a slot machine disclosed in U.S. Pat. No. 6,817,944 adds a payout in accordance with a selection element automatically selected, such selection element positioned adjacent to the selection element selected by a player when the player selects the selection element in the above bonus game.  
      However, a selection element automatically selected when the player selects a specific selection element is limited to elements adjacent to the specific selection element selected by the player. Therefore, for the player, a payout is merely added within a predictable range. Hence, the more the player plays games, the more it may cause him/her to feel the game monotonous.  
      In view of the foregoing, it is an object of the present invention to provide a gaming machine which can give new feeling to the player who is awarded a payout in accordance with a selection element selected by himself/herself.  
     SUMMARY OF THE INVENTION  
      In order to accomplish the above object, according to one aspect of the present invention, it is provided a gaming machine comprising:  
      a display device for displaying plural selection elements thereon, each of the selection elements having an identification number and a payout number;  
      a selection device for selecting one selection element among the selection elements displayed on the display by a manual operation of a player; and  
      a processor programmed to operate with the display device and the selection device (a) to determine the selection element among the selection elements not selected on the display device based on a lottery conducted by using the identification number attached to each of the selection elements, when the selection element selected through the selection device corresponds to a first specific selection element and (b) to award a payout based on the payout number of the selection element selected through the selection device and the payout number of the selection element determined through the lottery device.  
      The above and further objects and novel features of the invention will more fully appear from the following detailed description when the same is read in connection with the accompanying drawings. It is to be expressly understood, however, that the drawings are for purpose of illustration only and not intended as a definition of the limits of the invention. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
      The accompanying drawings, which are incorporated in and constitute a part of this specification illustrate embodiments of the invention and, together with the description, serve to explain the objects, advantages and principles of the invention.  
      In the drawings,  
       FIG. 1  is a view showing an example in which a content of a treasure box opened by an “OCTOPUS” coming out of another treasure box selected by a player is schematically displayed, in a treasure bonus game.  
       FIG. 2  is a perspective view showing a slot machine.  
       FIG. 3  is a perspective view showing nine variable display portions.  
       FIG. 4  is a perspective view showing eight pay lines.  
       FIG. 5  is a block diagram schematically showing a control system of the slot machine  
       FIG. 6  is a block diagram schematically showing a liquid crystal drive circuit of the slot machine.  
       FIG. 7  is a view showing a symbol row (video reel) variably displayed while being scrolled in each of the variable display portions on a lower liquid crystal display.  
       FIG. 8  is an explanatory view showing a lottery table to determine the symbols stopped and displayed in nine variable display portions, in the game.  
       FIG. 9  is an explanatory view showing a payout table in which winning symbol combinations and payouts thereof are mutually corresponded.  
       FIG. 10  is a flowchart showing a main process program.  
       FIG. 11  is a flowchart showing an acceptance process program.  
       FIG. 12  is a flowchart showing a lottery process program.  
       FIG. 13  is a flowchart showing a game process program.  
       FIG. 14  is a flowchart showing another game process program.  
       FIG. 15  is a view showing an example in which each of the “SCATTER” symbols is displayed in three variable display portions on the lower liquid crystal display.  
       FIG. 16  is a view showing a content displayed on the lower liquid crystal display, in a shell chance game.  
       FIG. 17  is an explanatory view showing a table used to determine each of the contents of the shells, in the shell chance game.  
       FIG. 18  is a view showing each of the contents of the shells displayed on the lower liquid crystal display, in the shell chance game.  
       FIG. 19  is a flowchart showing a treasure bonus process program.  
       FIG. 20  is a view showing a content displayed on the lower liquid crystal display, in the treasure bonus game.  
       FIG. 21  is a view showing an example in which numbering for each treasure box is conducted in the treasure bonus game.  
       FIG. 22  is an explanatory view showing a table used to determine each of the contents of the treasure boxes (any of “5”, “10”, “20”, “30”, “40”, “50”, “60”, “70”, “80”, “100”, and “200”), in the treasure bonus game.  
       FIG. 23  is an explanatory view showing a table used to determine each of the contents of the treasure boxes (existence or nonexistence of the “OCTOPUS”), in the treasure bonus game.  
       FIG. 24  is a view showing an example in which three treasure boxes selected by the player are opened and the contents thereof are displayed, in the treasure bonus game.  
       FIG. 25  is a view showing an example in which the first “OCTOPUS” coming out of the treasure box selected by the player is displayed.  
       FIG. 26  is a view showing an example in which the second “OCTOPUS” coming out of the treasure box opened by the first “OCTOPUS” is displayed.  
       FIG. 27  is a view showing an example in which a content of the treasure box opened by the second “OCTOPUS” is displayed.  
       FIG. 28  is an explanatory view showing a table used to determine the treasure box to be opened by the “OCTOPUS” in the treasure bonus game.  
       FIG. 29  is a flowchart showing a treasure bonus process program. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
      A gaming machine according to the invention will be described in detail with reference to the drawings based on an embodiment embodying the invention as a slot machine. At first, the construction of the slot machine according to this embodiment will be described with reference to FIGS.  2  to  5 .  FIG. 2  is a perspective view showing a slot machine.  FIG. 3  is a perspective view showing nine variable display portions.  FIG. 4  is a perspective view showing eight pay lines.  FIG. 5  is a block diagram showing a control system of the slot machine.  
      In  FIG. 2 , a slot machine  1  has a cabinet  2  forming the whole. An upper liquid crystal display  3  is positioned in the upper front part of the cabinet  2 , and a lower liquid crystal display  4  is positioned on a device front panel  20  positioned in the front center part of the cabinet  2 . Both the upper liquid crystal display  3  and the lower liquid crystal display  4  are constructed from the liquid crystal display used widely. A transparent touch panel  201  is positioned on the front surface of the lower liquid crystal display  4 . The upper liquid crystal display  3  displays information on a game such as a game method, a payout table  123  indicating kinds of winning combinations and payouts corresponding thereto (see  FIG. 9 , which will be described later), and various effects on the game. The lower liquid crystal display  4  displays nine variable display portions  22 A to  22 C,  23 A to  23 C, and  24 A to  24 C shown in  FIG. 3 , and eight pay lines “L 1 ” to “L 8 ” at maximum shown in  FIG. 4 . And, various kinds of symbols to form a video reel  100 , which will be described later in  FIG. 7 , are displayed while being scrolled from the right to the left in each of the display portions  22 A to  22 C,  23 A to  23 C and,  24 A to  24 C.  
      An operation table  5  formed by projecting to proximal side is provided at the bottom of the lower liquid crystal display  4 . A CHANGE button  6 , a CASHOUT button  7  and a HELP button  8  in order from the left side are arranged on the operation table  5 . A coin insertion slot  9  and a bill insertion portion  10  are arranged at the right of the HELP button  8 . A 1-BET button  11 , a SPIN/REPEAT BET button  12 , a 3-BET button  13 , a 5-BET button  14 , and a 8-BET button  15  in order from the left side are arranged on the forward part of the operation table  5 .  
      Hence, the CHANGE button  6  is a button to be pressed when the bill inserted in the bill insertion portion  10  is changed, and changed coins are paid out through a coin payout opening  16  to a coin tray  17  which is formed at the lower part of the cabinet  2 . To the CHANGE button  6 , a CHANGE switch  62 , which will be described later, is attached, and a switch signal which is generated from the CHANGE switch  62  will be output to a CPU  50  on the basis of pressing the CHANGE button  6  (see  FIG. 5 ).  
      The CASHOUT button  7  is a button to be pressed when the game is ended. When the CASHOUT button  7  is pressed, coins won in games are paid out through the coin payout opening  16  to the coin tray  16 . Here, to the CASHOUT button  7 , a CASHOUT switch  63 , which will be described later, is attached and a switch signal which is generated from the CASHOUT switch  63  will be output to the CPU  50  on the basis of pressing the CASHOUT button  7  (see  FIG. 5 ).  
      The HELP button  8  is a button to be pressed when a player cannot understand game operation method. When the HELP button  8  is pressed, various help information is displayed on the upper liquid crystal display  3 . To this button  8 , a HELP switch  64 , which will be described later, is attached and a switch signal which is generated from the HELP switch  64  will be output to the CPU  50  on the basis of pressing the help button  8  (see  FIG. 5 ).  
      To the coin insertion slot  9 , a coin sensor  65 , which will be described later, is arranged, and when the coin (s) is inserted in the coin insertion slot  9 , a coin detection signal which is generated from the coin sensor  65 , will be output to the CPU  50  (see  FIG. 5 ).  
      To the bill insertion portion  10 , a bill sensor  66 , which will be described later, is arranged, and when the bill is inserted in the bill insertion portion  10 , a bill detection signal which is generated from the bill sensor  66 , will be output to the CPU  50  (see  FIG. 5 ).  
      The 1-BET button  11  is a button to bet one bet every one press operation thereof To the 1-BET button  11 , a 1-BET switch  58 , which will be described later, is attached. And if the 1-BET button  11  is pressed, a switch signal which is generated from the 1-BET switch  58 , will be output to the CPU  50  (see  FIG. 5 ).  
      A SPIN/REPEAT BET button  12  is a button to start variable display of the symbols in each of the variable display portions  22 A to  22 C,  23 A to  23 C, and  24 A to  24 C on the lower liquid crystal display  4  to start the game with the present bet number or the previous bet number on the basis of press operation thereof. To the SPIN/REPEAT BET button  12 , a spin switch  57 , which will be described later, is attached. And if the SPIN/REPEAT BET button  12  is pressed, a switch signal which is generated from the spin switch  57 , will be output to the CPU  50  (see  FIG. 5 ). Here, the bet number which can be betted by pressing of the SPIN/REPEAT BET button  12  will be one, two, three, five or eight.  
      The 3-BET button  13  is a button to bet three bets at one time on the basis of press operation thereof. To the 3-BET button  13 , a 3-BET switch  59 , which will be described later, is attached. And if the 3-BET button is pressed, a switch signal which is generated from the 3-BET switch  59 , will be output to the CPU  50  (see  FIG. 5 ).  
      And, the 5-BET button  14  is a button to bet five bets at one time on the basis of press operation thereof. To this 5-BET button  14 , a 5-BET switch  60 , which will be described later, is attached. And if the 5-BET button  14  is pressed, a switch signal which is generated from the 5-BET switch  60 , will be output to the CPU  50  (see  FIG. 5 ).  
      And, the 8-BET button  15  is a button to bet eight bets at one time on the basis of press operation thereof. To this 8-BET button  15 , a 8-BET switch  61 , which will be described later, is attached. And if the 8-BET button  15  is pressed, a switch signal which is generated from the 8-BET switch  61 , will be output to the CPU  50  (see  FIG. 5 ).  
      And, the bet number which can be bet by pressing of the 1-BET button  11 , the SPIN/REPEAT BET button  12 , the 5-BET button  14 , and the 8-BET button will be one, two, three, five or eight. Here, if the bet number is one, the pay line is any one of the lines “L 1 ” to “L 8 ”. If the bet number is two, the pay lines are any two of the lines “L 1 ” to “L 8 ”.  
      If the number of betting is three, the pay lines are any three of the lines “L 1 ” to “L 8 ”. If the bet number is five, the pay lines are any five of the lines “L 1 ” to “L 8 ”. If the bet number is eight, the pay lines are all of the lines “L 1 ” to “L 8 ”.  
      And, the system mentioned above can be applicable to the slot machine model which has the button to set all of the lines “L 1 ” to “L 8 ” at one time.  
      Hereinafter, for explanation&#39;s sake, it is supposed that the game is progressed in a state that all of eight pay lines “L 1 ” to “L 8 ” are activated, if no description is done.  
      And at a lower position of the cabinet  2 , the coin payout opening  16  is formed, and the coin tray  17  for receiving coins paid out from the coin payout opening  16  is provided. The coin detection portion  73  which is constructed from the sensor etc., which will be described later, is arranged inside the coin payout opening  16 . And the coin detection portion  73  detects the number of coins paid out from the coin payout opening  16  (see  FIG. 15 ).  
      Next, the symbols used in the game of the slot machine  1  will be described with reference to  FIG. 7 .  FIG. 7  is a view showing a symbol row (video reel) which is variably displayed while being scrolled in each of the variable display portions  22 A to  22 C,  23 A to  23 C, and  24 A to  24 C.  
      Here, the video reef  100  is constructed from the symbol row. The symbol row is constructed from ten symbols of “SCATTER”  101 , “MARINE TURTLE”  102 , “MUDSKIPPER”  103 , “SEAHORSE”  104 , “HERMIT CRAB”  105 , “FLAGTAIL SURGEONFISH”  106 , “AMMONITE”  107 , “CLOWNFISH”  108 , “SEAL”  109 , and “SWORD FISH”  110 .  
      Next, the construction of the control system in the slot machine  1  will be described with reference to  FIG. 5 .  FIG. 5  is a block diagram schematically showing the control system in the slot machine  1 .  
      In  FIG. 5 , the control system in the slot machine  1  is basically constructed from a CPU  50 , and a ROM  51  and a RAM  52 . The ROM  51  and the RAM  52  are connected to the CPU  50 . A main process program, the start acceptance process program, the lottery process program, the game process program, the lottery table used to determine the symbols stopped and displayed in the game in a lottery, various programs for controlling the slot machine  1 , data tables, which will be described later, are stored in the ROM  51 . The RAM  52  is a temporary memory for storing various data processed by the CPU  50 .  
      And to the CPU  50 , a clock pulse generator  53  for generating standard clock pulses and a frequency divider  54  are connected. And to the CPU  50 , a random number generator  55  and a random number sampling circuit  56  for generation random numbers are connected. The random number sampled by the random number sampling circuit  56  is used in various lotteries of the winning symbol combinations. Further, to the CPU  50 , a SPIN switch  57  attached to the SPIN/REPEAT button  12 , a 1-BET switch  58  attached to the 1-BET button  12 , a 3-BET switch  59  attached to the 3-BET button  13 , 5-BET switch  60  attached to the 5-BET button  14 , the 8-BET switch  61  attached to the 8-BET button  15 , the CHANGE switch  62  attached to the CHANGE button  6 , the CASHOUT switch  63  attached to the CASHOUT button  7 , and the HELP switch  64  attached to the HELP button  8  are connected, respectively. The CPU  50  controls various operations corresponding to each of the buttons based on the switch signal output from each switch on the basis of press operation thereof.  
      Further, to the CPU  50 , the coin sensor  65  arranged in the coin insertion slot  9  and the bill sensor  66  arranged in the bill insertion portion  10  are connected respectively. The coin sensor  65  detects coins inserted from the coin insertion slot  9  and the CPU  50  calculates the number of inserted coins based on the coin detection signal output from the coin sensor  65 . The bill sensor  66  detects the kind and sum of the bill inserted from bill insertion portion  10  and the CPU  50  calculates the number of coins equal to the sum of bill, based on the bill detection signal output from the bill sensor  66 .  
      To the CPU, a hopper  71  is connected through a hopper drive circuit  7 . If a drive signal which is generated from the CPU  50  is output to the hopper drive circuit  70 , the hopper  71  will pay out a predetermined number of coins from the coin payout opening  16 .  
      And to the CPU  50 , a coin detection portion  73  is connected through the payout completion signal circuit  72 . The coin detection portion  73  is arranged in the coin payout opening  16 . And if the coin detection portion  73  detects that a predetermined number of coins are paid out from the coin payout opening  16 , a coin payout detection signal which is from the coin detection portion  73 , is output to the payout completion signal circuit  72 . Thereby, the payout completion signal circuit  72  outputs a payout completion signal to the CPU  50 . Further, to the CPU  50 , the upper liquid crystal display  3  and the lower liquid crystal display  4  are connected through a liquid crystal drive circuit  74 . And the upper liquid crystal display  3  and the lower liquid crystal display  4  are controlled by the CPU  50 .  
      Here, as shown in  FIG. 6 , the liquid crystal drive  74  is constructed from a program ROM  81 , an image ROM  82 , an image control CPU  83 , a work RAM  84 , a VDP (video display processor)  85 , and a video RAM  68 . And in the program ROM  81 , an image control program related to the display on the upper liquid crystal display  3  and the lower liquid crystal display  4 , and various selection tables are stored.  
      And, in the image ROM  82 , the dot data to form images, for example, various images of the demonstration effects and the treasure bonus displayed on the upper liquid crystal display  3  and the lower liquid crystal display  4 , help information and the payout table displayed on the upper liquid crystal display  3  and the symbols of the video reel  100  shown in  FIG. 7  displayed in the variable display portions  22 A to  22 C,  23 A to  23 C, and  24 A to  24 C on the lower liquid crystal display  4 , are stored. And, the image control CPU  83  determines the images displayed on the upper liquid crystal display  3  and the lower liquid crystal display  4  among the dot data stored beforehand in the image ROM  82  based on parameters set by the CPU  50 .  
      And, the work RAM  84  works as a temporary memory when the image control program is executed in the image control CPU  83 . And the VDP  85  forms images corresponding to display contents determined by the image control CPU  83 . And the VDP  85  outputs the images formed thereby to the upper liquid crystal display  3  and the lower liquid crystal display  4 . Thereby, for example, each of the symbols of the video reel  100  shown in  FIG. 7  is variably displayed and stopped in the variable display portions  22 A to  22 C,  23 A to  23 C, and  24 A to  24 C on the lower liquid crystal display  4  (see  FIG. 3 ). And the video RAM  86  works as a temporary memory when the images are formed by the VDP  85 .  
      Here, when each of the symbols to form the video reel  100  which is variably displayed while being scrolled in the variable display portions  22 A to  22 C,  23 A to  23 C, and  24 A to  24 C respectively is stopped and displayed, one symbol is stopped and displayed in each of the variable display portions. And various winning combinations are predetermined based on a plurality of symbol combinations (see  FIG. 9 ). And if the symbol combination corresponding to the winning combination is stopped on each of the pay lines “L 1 ” to “L 8 ”, the coins corresponding to the winning combination are paid out from the coin payout opening  16 . The above-mentioned points are the same as in the conventional slot machine, therefore detailed description thereof will be omitted.  
      Returning to  FIG. 5 , to the CPU  50 , the transparent touch panel  201  is connected through a touch panel drive circuit  202 . As mentioned, the transparent touch panel  201  is arranged on the image screen of the lower liquid crystal display  4 . And the transparent touch panel  201  can recognize the place the player touches based on the coordinate information of the portion touched by the player.  
      And, to the CPU  50 , LEDs  78  are connected through a LED drive circuit. Many LEDs  78  are arranged on the front face of the slot machine  1 , and are lighting-controlled by the LED drive circuit  77  based on the drive signal from the CPU  50  when various effects are produced. And, to the CPU  50 , a sound output circuit  79  and a speaker  80  are connected. The speaker  80  reproduces various effect sounds when various effects are produced based on the output signal from the sound output circuit  79 .  
      Here, it will be described with reference to  FIG. 8  the lottery table which is used when the symbols stopped and displayed in each of the variable display portions  22 A to  22 C,  23 A to  23 C, and  24 A to  24 C are determined, in a case that the game is performed by using nine variable display portions  22 A to  22 C,  23 A to  23 C, and  24 A to  24 C.  FIG. 8  is an explanatory view showing the lottery table of the stop display symbols used when the game is performed by using nine variable display portions. Here, the lottery table shown in  FIG. 8  is stored in the ROM  51 .  
      The symbols stopped and displayed in each of the variable display portions  22 A to  22 C,  23 A to  23 C and  24 A to  24 C are determined every each variable display portion. Therefore, a code No., which lies in a range of “0” to “9”, is allotted to each of the symbols to form the video reel  100  shown in  FIG. 7 , in order from the left. And the lottery table shown in  FIG. 8  is provided beforehand. Further, nine random numbers are sampled by the random number sampling circuit  56  so as to correspond to each of the variable display portions  22 A to  22 C,  23 A to  23 C, and  24 A to  24 C.  
      Here, each of the symbols to form the video reel  100  in the variable display portion  23 A will be described. As shown in the lottery table in  FIG. 8 , if the random number lies in a range of 0 to 1, the “SCATTER” symbol  101  allotted to the code No. “0” is stopped and displayed in the variable display portion  23 A. And, each of the code Nos. “1” to “9” is processed in the same way based on the lottery table in  FIG. 8 .  
      And each of the symbols to form the video reel in the other variable display portions is processed as well as the symbol to form the video reel in the variable display portion  23 A.  
      Here, the winning combinations and the payouts thereof used when the game is performed by using nine portions of the slot machine  1  will be described with reference to  FIG. 9 .  FIG. 9  is an explanatory view showing the payout table indicating the winning combinations and the payouts thereof.  
      The payout table  123  shown in  FIG. 9  is constructed from an any odds table  121  and a line odds table  122 , and is stored in the ROM  51 .  
      The any-odds table  121  holds a payout number every one symbol in accordance with the number of the same symbols stopped and displayed in the variable display portions (see  FIG. 3 ) existing on the pay lines (see  FIG. 4 ) displayed on the lower liquid crystal display  4 . For example, concerning with the nine variable display portions  22 A to  22 C,  23 A to  23 C, and  24 A to  24 C, if five code Nos. corresponding to the variable displayed portions on the pay lines (see  FIG. 4 ) are any of “2” to “19” respectively, “ANY5 of MARINE TURTLE” is won (see  FIG. 8 ). In this case, “MARINE TURTLE” is stopped and displayed in five variable display portions respectively on the pay lines (see  FIG. 4 ), and the payout number “1” will be acquired. And similar to this; each of the payouts of any-odds is determined based on the any-odds table  121  shown in  FIG. 9 .  
      And in the line odds table  122 , it is shown every one symbol a payout number given to the pay line (see  FIG. 4 ) in all variable display portions (see  FIG. 3 ) of which the same symbols are stopped and displayed. For example, concerning with the nine variable display portions  22 A to  22 C,  23 A to  23 C and,  24 A to  24 C, if all code Nos. for the variable display portions on one pay line among pay lines are any of “2” to “19”, “MARINE TURTLE-MARINE TURTLE-MARINE TURTLE” is won (see  FIG. 8 ) for this pay line (see  FIG. 4 ). In this case, the symbol “MARINE TURTLE” is stopped and displayed in all variable portions on the pay line (see  FIG. 4 ) respectively (see  FIG. 8 ), and the payout number “5” will be acquired. Here, in a case that there exist plural pay lines for each of which “MARINE TURTLE-MARINE TURTLE-MARINE TURTLE” is won, the payout number calculated by multiplying the number of pay lines by “5” will be obtained. And similarly to this, each payout number of line-odds will be determined based on the line-odds table  122 .  
      Here, concerning with the nine variable display portions  22 A to  22 C,  23 A to  23 C,  24 A to  24 C, if code Nos. for three or more variable display portions on the pay lines (see  FIG. 4 ) displayed on the lower-liquid crystal display  4  are “0” or “1,” the scatter symbol  101  is displayed in each of three or more variable display portions on the pay lines (see  FIG. 4 ) is respectively stopped and displayed (see  FIG. 7 ). Thereafter, a shell chance game is progressed on the lower liquid crystal display  4 .  
       FIG. 15  is a view showing the example in which the “SCATTER” symbols  101  are stopped and displayed in three variable displayed portions respectively. In this example, if at least three or more pay lines are displayed on the lower display  4 , the game state can be shifted to the shell chance game.  
      If the game state shifts to the shell chance game, as shown in  FIG. 16 , at first, five shells  211  are displayed on the lower liquid crystal display  4 . Here, as for the content in each of five shells  211 , any one of “A”, “B”, “10”, “20” and “30” is respectively stored in each of five shells  211 . In this embodiment, the lottery is conducted for each shell  211  based on the table (see  FIG. 17 ) and the random number value sampled in a range of 0 to 127 through the random number sampling circuit  56 , thereby the content in each of five shells  211  are determined.  
      Therefore, according to the table shown in  FIG. 17 , if the random number sampled by the random number sampling circuit  56  lies in a range of 0 to 26, the content of the shell  211  will be “A”. If the random number sampled by the random number sampling circuit  56  lies in a range of 27 to 53, the content of the shell  211  will be “B”. If the random number sampled by the random number sampling circuit  56  lies in a range of 54 to 78, the content of the shell  211  will be “10”. If the random number sampled by the random number sampling circuit  56  lies in a range of 79 to 104, the content of the shell  211  will be “20”. If the random number sampled by the random number sampling circuit  56  lies in a range of 105 to 127, the content of the shell  211  will be “30”.  
      If the player selects one shell  211  among five shells  211  displayed on the lower liquid crystal display  4  by touching the transparent touch panel  201 , the contents of 5 shells (one of the symbol “A”, “B”, “10”, “20” and “30”) are displayed on the lower liquid crystal display  4  as shown  FIG. 18 . At that time, the arrow indicating shell  211  selected by the player is displayed on the lower liquid crystal display  4 .  
      Here, if the content of the shell  211  selected by the player is “A,” the game state shifts to another bonus game. The explanation thereof will be omitted. If the content of the shell  211  selected by the player is “B,” the game state shifts to the treasure bonus game, and the explanation thereof will be described later. And, if the content of the shell  211  selected by the player is “10,” the payout number “10” can be acquired. If the content of the shell  211  selected by the player is “20,” the payout number “20” can be acquired. If the content of the shell  211  selected by the player is “30” , the payout number “30” can be acquired.  
      Here, as shown in  FIG. 16 , to keep the condition in which the player can select the another bonus game or the treasure bonus game, the contents of five shells  211  may be determined so that “A” and “B” are always stored in any two of five shells  211  displayed on the lower liquid crystal display  4 .  
      Next, the treasure bonus game will be described. In the treasure bonus game, as shown in  FIG. 20 , at first, twenty three treasure boxes  301  are displayed on the lower liquid crystal display  4 . Each of the contents of twenty three treasure boxes  301  is any one of “5”, “10”, “20”, “30”, “40”, “50”, “60”, “70”, “80”, “100,” and “200”. In this embodiment, the contents thereof are determined every each treasure box  301  by the lottery conducted based on the table (see  FIG. 22 ) and the random number value sampled by the random sampling circuit  56  in a range of 0 to 127.  
      Hence, according to the table shown in  FIG. 22 , if the random number value sampled by the random number sampling circuit  56  lies in a range of 0 to 7, “5” is selected out as the content of the treasure box  301 . And as for “10”, “20”, “30”, “40”, “50”, “60”, “70”, “80”, “100,” and “200,” each of them is similarly selected out as the content of the treasure box  301 .  
      Further, among twenty three treasure boxes  301 , in addition to any of “5”, “10”, “20”, “30”, “40”, “50”, “60”, “70”, “80”, “90”, “100” and “200”, there will exist the treasure box in which an “OCTOPUS” is stored and the treasure box in which the “OCTOPUS” is not stored. In this embodiment, the lottery is conducted for each treasure box  301  based on the table (see  FIG. 23 ) and the random number value sampled through the random number sampling circuit  56  in a range of 0 to 127, thereby it is determined whether or not the “OCTOPUS” is stored in the treasure box.  
      According to the table shown in  FIG. 23 , if the random number value sampled by the random sampling circuit  56  lies in a range of 0 to 15, the “OCTOPUS” is stored in the treasure box as the content thereof, and if the random number value sampled by the random sampling circuit  56  lies in a range 16 to 127, the “OCTOPUS” is not stored in the treasure box as the content thereof.  
      And the player can select three treasure boxes  301  among twenty three treasure boxes  301  displayed on the lower liquid crystal display  4  by touching the transparent touch panel  201  without any betting coins and the like. And, after the player selects three treasure boxes  301 , the treasure box  301  selected by the player will be opened and contents thereof will be displayed on the lower liquid crystal display  4  every the player selects the treasure box.  FIG. 24  shows one example that three treasure boxes  301  selected by the player are opened and the contents thereof are displayed. In this example, the “OCTOPUS” is not stored in any of the treasure boxes  301  selected by the player.  
      On the other hand, if the treasure box  301  selected by the player has the “OCTOPUS,” for example, as shown in  FIG. 25 , on the liquid crystal display  4 , the treasure box is opened and the content thereof (“5” shown in  FIG. 25 ) is displayed thereon, and the “OCTOPUS” coming out of the treasure box  301  is displayed thereon. And, the “OCTOPUS” moves to one of the treasure boxes  301  which have not been opened, and the treasure box  301  will be opened, after that, the content thereof (“60” shown in  FIG. 1 ) is displayed on the liquid crystal display  4 .  
      Then, the treasure box  301  opened by the “OCTOPUS” has the other “OCTOPUS,” for example, as shown  FIG. 26 , on the liquid crystal display  4 , the other “OCTOPUS” coming out of the treasure box  301  is newly displayed thereon. And, as shown  FIG. 27 , on the liquid crystal display  4 , the other “OCTOPUS” moves to one of the treasure boxes  301  which have not been opened, and the treasure box  301  will be opened, after that, the content thereof (“70” shown in  FIG. 27 ) is displayed on the liquid crystal display  4 . That is to say, if the “OCTOPUS” is stored in the treasure box  301  opened by the player or the “OCTOPUS” displayed on the lower liquid crystal display  4 , another treasure box  301  is continuously opened. Therefore, it will be a case that the treasure boxes  301  are successively opened by the “OCTOPUS” displayed on the lower liquid crystal display  4 .  
      Here, in this embodiment, the treasure box opened by the “OCTOPUS” displayed on the lower liquid crystal display  4  will be determined by the lottery conducted based on the table (see  FIG. 28 ) and the random number value sampled by the random number sampling circuit  56  in a range of 0 to 127.  
      In other words, for example, as shown in  FIG. 21 , each of the treasure boxes  301  displayed on the lower liquid crystal display  4  is respectively numbered beforehand in a range of No. 1 to No. 23.  
      And, according to the table shown in  FIG. 28 , if the random number value sampled by the random number sampling circuit  56  lies in a range of 0 to 2, it will be determined that there is no treasure box  301  to be opened by the “OCTOPUS” which is displayed on the lower liquid crystal display  4 . If the random number value sampled by the random number sampling circuit  56  lies in a range of 3 to 27, it will be determined that one of the unopened treasure boxes which are numbered from No. 1 to No. 5 is determined to be opened by the “OCTOPUS” displayed on the lower liquid crystal display  4 . If the random number value sampled by the random number sampling circuit  56  lies in a range of 28 to 52, it will be determined that one of the unopened treasure boxes which are numbered from No. 6 to No. 9 is determined to be opened by the “OCTOPUS” displayed on the lower liquid crystal display  4 . If the random number value sampled by the random number sampling circuit  56  lies in a range of 53 to 77, it will be determined that one of the unopened treasure boxes which are numbered from No. 10 to No. 14 is determined to be opened by the “OCTOPUS” displayed on the lower liquid crystal display  4 . If the random number value sampled by the random number sampling circuit  56  lies in a range of 78 to 102, it will be determined that one of the unopened treasure boxes which are numbered from No. 15 to No. 18 is determined to be opened by the “OCTOPUS” displayed on the lower liquid crystal display  4 . If the random number value sampled by the random number sampling circuit  56  lies in a range of 103 to 127, it will be determined that one of the unopened treasure boxes which are numbered from No. 19 to No. 23 is determined to be opened by the “OCTOPUS” displayed on the lower liquid crystal display  4 .  
      Here, to determine one treasure box  301  among the treasure boxes  301  which are numbered from No. 1 to No. 5 and have not been opened, for example, it is checked according to increase order, decrease order or random order of the numbers allotted to the treasure boxes  301  numbered from No. 1 to No. 5, whether or not the treasure box  301  is already opened, based on each of flags corresponding to each of the treasure boxes  301 .  
      If all treasure boxes  301  which are numbered from No. 1 to No. 5 have already opened, each flag corresponding to each of all treasure boxes  301  may be checked, a new random number for each treasure box may be sampled by the random number sampling circuit  56 , or it may be determined that there is no treasure box  301  to be opened by the “OCTOPUS” displayed on the lower liquid crystal display  4 .  
      And, the treasure boxes  301  which are numbered from No. 6 to No. 9 and not opened, the treasure boxes  301  which are numbered from No. 10 to No. 14 and not opened, the treasure boxes  301  which are numbered from No. 15 to No. 18 and not opened, and the treasure boxes  301  which are numbered from No. 19 to No. 23 and not opened are processed in the same way.  
      And, when the player finish selecting three treasure boxes  301 , the player can acquire the payout including total contents (any of “5”, “10”, “20”, “30”, “40”, “50”, “60”, “70”, “80”, “100,” and “200”) selected by the player or the “OCTOPUS”.  
      Next, the main processing program executed in the slot machine  1  will be described with reference to  FIG. 10 .  FIG. 10  is a flowchart showing the main process program. In  FIG. 10 , at first, in step S 11 , the start acceptance process is executed. This start acceptance process is the process to receive the switch signal output from the spin switch  57 , the 1-BET switch  58 , the 3-BET switch  59 , the 5-BET switch  60 , or the 8-BET switch  61  based on the operation of the 1-BET button  11 , the 3-BET button  13 , the 5-BET button  14 , or the 8-BET button  15 . Here, the game is started at the time that such switch signal output from each switch is accepted.  
      And, at step S 12 , the lottery process shown in  FIG. 12 , which will be described later, is executed based on the switch signal output from the spin switch  57 , the 1-BET switch  58 , the 3-BET switch  59 , the 5-BET switch  60 , or the 8-BET switch  61 .  
      At step S 13 , the game processing shown in  FIG. 13 , which will be described later, is executed. Thereafter, at step S 14 , the another game process shown in  FIG. 14 , which will be described later, is executed. Therefore, the main process program is ended.  
      Next, the start acceptance process program executed in the slot machine  1  will be described with reference to  FIG. 11 .  FIG. 11  is a flowchart showing the start acceptance process program. At step S 11  in the main process program shown in  FIG. 11 , the start acceptance process is executed. Therefore, at first, the procedure shifts to step S 21  shown in  FIG. 11  and it is determined whether or not a predetermined time (for example, 15 seconds) elapses. Here, if it is determined that the predetermined time does not elapse (step S 21 : No), the procedure will shift to step S 23 . And, if it is determined that the predetermined time elapses (step S 21 : YES), the demonstration effect is produced on the upper liquid crystal display  3  and the lower liquid crystal display  4 , after that, the procedure will shift to step S 23 . And, at step S 23 , it is determined whether or not the spin button  12 , the 1-BET button  11 , the 3-BET button  13 , the 5-BET button  14 , or the 8-BET button  15  is operated. Here, if it is determined that the 1-BET button  11  or the like is not operated (step S 23 : NO), the procedure will return to step S 21  and the above procedure will be re-executed. On the other hand, if it is determined that the 1-BET button  11  or the like is operated (step S 23 : YES), the demonstration effect will be ended. The pay lines “L 1 ” to “L 8 ” are displayed on the lower liquid crystal display  4 , and, for example, the payout table including the any-odds table  121  and the line-odds table  122  shown in  FIG. 9  will be displayed on the upper liquid crystal display  3 , after that, the procedure will return to the main process program of  FIG. 10 , and will shift to the lottery process at step S 12 .  
      Next, the lottery process program executed in the slot machine  1  will be described with reference to  FIG. 12 .  FIG. 12  is a flowchart showing the lottery process program. At step S 12  in the main processing program shown in  FIG. 10 , the lottery process is executed, therefore, at first, the procedure will shift to step S 31  shown in  FIG. 12  and the symbol determination processing is executed. Here, each of the symbols to be stopped and displayed in each of the variable display portions  22 A to  22 C,  23 A to  23 C and  24 A to  24 C is determined every each variable display portion in the game (step  42  shown in  FIG. 13 ). Concretely, as mentioned above, nine random number values are sampled through the random number sampling circuit  56  in a range of 0 to 127 so as to correspond to each of the variable display portions  22 A to  22 C,  23 A to  23 C and  24 A to  24 C and the stop symbols are determined by the code Nos. based on the lottery table shown in  FIG. 8 . And, if each of the symbols stopped and displayed in each of the variable display portions  22 A to  22 C,  23 A to  23 C, and  24 A to  24 C is determined, the winning combination determination process will be executed at step S 32 . In this winning combination determination process, concretely, as mentioned above, the winning symbol combination on the pay line and the payout thereof are determined based on the payout table  123  shown in  FIG. 9  by using code Nos. at step S 31 .  
      After that, the procedure returns to the main process program of  FIG. 10  and shifts the game process at step S 13 .  
      Next, the game process program executed in the slot machine  1  will be described with reference to  FIG. 13 .  FIG. 13  is a flowchart showing the game process program. At step S 13  shown in  FIG. 10 , the game process program is executed. Therefore, at first, at step S 41  shown in  FIG. 13 , the rotation process is executed. In this rotation process, concretely, each of the images of the symbols to form the video reel  100  are scrolled from the right to the left in each of the variable display portions  22 A to  22 C,  23 A to  23 C, and  24 A to  24 C based on the switch signal output from the spin switch  57 , the 1-BET switch  58 , the 3-BET switch  59 , the 5-BET switch  60 , or the 8-BET switch  61  operated at step S 11  shown in  FIG. 10 .  
      And, at step S 42 , the stop control process is executed. In this stop control process, in each of the variable display portions  22 A to  22 C,  23 A to  23 C, and  24 A to  24 C, each of the symbol images to form the video reel  100  is stopped based on the result determined in the symbol determination process.  
      Hereby, each of the symbol images is stopped and displayed.  
      And, at step S 43 , coins corresponding to the payout number predetermined based on the table shown in  FIG. 9  will be paid out, according to the symbol combination of the winning combination stopped and displayed in the variable display portions  22 A to  22 C,  23 A to  23 C, and  24 A to  24 C on the pay lines “L 1 ” to “L 8 ” displayed on the lower liquid crystal display  4 . Here, if the winning combinations are realized on plural pay lines “L 1 ” to “L 8 ”, each of the payout numbers corresponding to each of the winning combinations will be added up. Therefore, for example, if a plurality of any-odds and/or line-odds are realized at the same time, as for the payout of odds the payout change information of which is displayed on the upper liquid crystal display  3 , after the payout is multiplied by the magnification of such payout change information, coins corresponding to the sum obtained by totally adding up each of the payouts are paid out.  
      After that, the procedure returns to the main process program shown in  FIG. 10 , and the procedure shifts the another game process at step S 14 .  
      Next, the another game process program executed in the slot machine  1  will be described with reference to  FIG. 14 .  FIG. 14  is a flowchart showing the another process program. The another process program is executed in the main process program (step S 14 ) shown in  FIG. 10 . Therefore, at first, at step S 51  shown in  FIG. 14 , it is determined whether or not the scatter symbols  101  with more than a predetermined number are stopped and displayed in the variable display portions  22 A to  22 C,  23 A to  23 C and  24 A to  24 C on the pay lines L 1  to L 8  displayed on the lower liquid crystal display  4 . Here, the predetermined number of the scatter symbols in the embodiment is set to three (see  FIG. 15 ).  
      Here, if it is determined that the number of the “SCATTER” symbol is smaller than predetermined number (step S 51 : NO), the procedure will shift to the payout process (step S 59 ), which will be described later. On the other hand, if it is determined that the number of the “SCATTER” symbol is larger than the predetermined number (step S 51 : YES), the procedure will shift to step S 52 .  
      At step S 52 , the shell&#39;s content determination process is executed. Concretely, as mentioned above, five shells  211  are displayed on the lower liquid crystal display  4  (see  FIG. 16 ), and each of the contents thereof is determined as any one of “A”, “B”, “10”, “20”, “30” by the lottery conducted based on the table (see  FIG. 17 ) and the random number value sampled by the random sampling circuit  56  in a range of 0 to 127.  
      And, after the procedure shifts step S 53 , procedure will be waiting until the player selects one shell  211  among five shells  211  displayed on the lower liquid crystal display  4  (step S 52 : NO). Here, as mentioned above, the player can select one shell  211  among five shells by touching the transparent touch panel  201 .  
      And, if the player selects one shell  211  among five shells  211  displayed on the lower liquid crystal display  4  (step S 52 : YES), the procedure will shift to step S 54  and the content of the shell  211  selected by the player is displayed on the lower liquid crystal display  4 . In this embodiment, as shown in  FIG. 18 , for example, contents of all shells  211  are displayed and the arrow indicating the shell  211  selected by the player is also displayed.  
      And, after the procedure shifts to step S 55 , it is determined whether or not the content of the shell  211  selected by the player is the bonus game. In this determination, the content of the shell  211  selected by the player is “A” or “B”, the content thereof is the bonus game. And, if the content thereof is “10”, “20” or “30”, the content thereof is not the bonus game. Here, if it is determined that the content thereof is not the bonus game (step S 55 : NO), the procedure will shift the payout process (step S 59 ), which will be described later. On the other hand, if it is determined that the content thereof is the bonus game (step S 55 : YES), procedure will shift to step S 56 .  
      At step S 56 , it is determined whether or not the bonus game is the treasure game. In this determination, if the content of the treasure box  301  selected by the player is “A”, the bonus game is not the treasure bonus game. And, if the content of the treasure box  301  selected by the player is “B”, the bonus game is the treasure bonus game. And, if it is determined that the bonus game is not the treasure bonus game (step  56 : NO), the another bonus game process is executed at step S 58 , after that, the procedure will shift to step S 59 . And, the another bonus game is executed in the another game process step  58 , but explanation thereof will be omitted. On the other hand, if it is determined that the bonus game is the treasure bonus game (step S 56 : YES), at step S 57 , the treasure bonus process shown in  FIG. 19  is executed, which will be described later, after that, the procedure will shift to step S 59 .  
      At step S 59 , the payout process is executed. If the content of the shell  211  selected by the player at step S 55  is any of “10”, “20”, or “30” (step S 55 : NO), the coins, in which the number thereof is equal to the content, are paid out. And the payouts which the player won in the another bonus game at step S 58  and in the treasure bonus game at step S 57  are also paid out as coins corresponding to the payouts, in the payout process.  
      And, after the process at step S 59  is executed, the main processing program shown in  FIG. 10  is ended. And a new main process program shown in  FIG. 10  will be started.  
      Next, the treasure bonus process program executed in the slot machine  1  will be described with reference to  FIG. 19 .  FIG. 19  is a flowchart showing the treasure bonus process program. The treasure bonus process is executed at step S 57  in the another game processing program. Therefore, at first, at step S 71  shown in  FIG. 19 , the shell&#39;s content determination process program is executed. Concretely, as shown in  FIG. 20 , for example, twenty three treasure boxes  301  are displayed on the lower liquid crystal display  4 , and as mentioned above, each of the contents thereof is determined as any one of “5”, “10”, “20”, “30”, “40”, “50”, “60”, “70”, “80”, “100”, and “200” by the lottery conducted based on the table (see  FIG. 22 ) and the random number value sampled by the random number sampling circuit  56  in a range of 0 to 127. Further, the lottery is conducted for each of the treasure boxes  301  based on the table (see  FIG. 23 ) and the random number value sampled through the random number sampling circuit  56  in a range of 0 to 127. Thereby, it is determined whether or not existence of the “OCTOPUS” is added to each of the contents of the treasure boxes  301 . Here, each of the contents of the treasure boxes  301  is stored in the table retained in the RAM  52 .  
      And, after the procedure shifts to step S 72 , the procedure will be waiting until the player selects one treasure box  301  (step S 72 : NO). Here, as mentioned above, the player can select the treasure box by touching the transparent touch panel  201 . However, the player cannot select the treasure box which has already been opened. To determine whether or not the treasure box has already been opened, for example, the flag retained in the RAM  52  corresponding to each of the treasure boxes  301  is checked. And, one of the treasure boxes  301  is selected (step S 72 : YES), number of times of the treasure box  301  selected by the player is stored in the RAM  52 , after that, the procedure shifts to step S 73 .  
      At step S 73 , the treasure box  301  is opened and the content thereof (any of “5”, “10”, “20”, “30”, “40”, “50”, “60”, “70”, “80”, “100”, “200”) is displayed on the lower liquid crystal display  4  (for example, see  FIGS. 24 and 25 ). This display process is executed based on the table (which is stored in the RAM  52 ) holding the content of each treasure box  301 . And, the flag associated with each treasure box  301  opened by the player holds that condition.  
      And, after the procedure shifts step S 74 , if it is determined whether or not the “OCTOPUS” exists in the treasure box  301  selected by the player. This determination process is executed based on the table storing each of the content of the treasure box  301  (which is stored in the RAM  52 ). Here, if it is determined that the “OCTOPUS” does not exist in the treasure box  301  selected by the player (step S 74 : NO), the procedure will shift to step S 75 , which will be described later. On the other hand, if it is determined that the “OCTOPUS” exists in the treasure box  301  selected by the player (step S 74 : YES), the procedure will shift to step S 76 .  
      At step S 76 , it is determined whether or not the treasure box  301  which has not been opened by the player remains on the lower liquid crystal display  4 . This determination process is executed by checking the flag (which is stored in the RAM  52 ) associated with each of the contents of the treasure boxes  301 . Here, if it is determined that there is no treasure box  301  which has not been opened (step S 76 : NO), the procedure will return to the another game process program, and shift to the payout process at step S 59 . On the other hand, if it is determined that there is the treasure box  301  which has not been opened (step S 76 : YES), the procedure will shift to step S 77 .  
      At step S 77 , it is conducted the determination process for the treasure box  301  to be opened by the “OCTOPUS” displayed on the lower liquid crystal display  4 . Concretely, for example, as mentioned above, the treasure box  301  to be opened by the “OCTOPUS” is determined by the lottery based on the table (see  FIG. 28 ) and the random number value sampled by the random sampling circuit  56  in a range of 0 to 127. Thereby, the treasure box  301  opened by the “OCTOPUS” displayed on the lower liquid crystal display  4  is determined. Thereafter, the procedure will shift to step S 78 . Here, if the table shown in  FIG. 28  is used, there will be a case in which it is determined that there exists no treasure box  301  opened by the “OCTOPUS” displayed on the lower liquid crystal display  4 . At that time, the procedure will shift to step S 75 , which will be described later.  
      And, after the procedure shifts to step S 78 , the “OCTOPUS” which comes out of the treasure box  301  opened at step S 73  and moves to the treasure box  301  determined at step S 77 , is displayed on the lower liquid crystal display  4 . And, the treasure box  301  determined at step S 77  is opened and the content thereof (any of “10”, “20”, “30”, “40”, “50”, “60”, “70”, “80”, “100”, and “200”) is displayed (for example, see  FIGS. 24 and 25 ), after that, the procedure returns to step S 74 . Here, the content displayed based on the table (which is stored in the RAM  52 ) associated with the content of each of the treasure boxes  301  and the like.  
      On the other hand, at step  74 , if it is determined that there is not the “OCTOPUS” in the treasure box  301  selected by the player (step S 74 : NO), the procedure will shift to step S 75 , as mentioned above. At step S 75 , it is determined whether or not the number of times in which the player can select is left. Here, in this embodiment, the number of times in which the player can select is set to three. And, as mentioned above, the number of times in which the player has already selected is stored in the RAM  52 . Here, if the number of times is left (step S 75 : YES), the procedure will return to step S 72  and the process mentioned above will be repeated. On the other hand, if the number of times is not left (step S 75 : NO), the procedure will return to the another game process program and will shift to the payout process at step S 59 .  
      Here, in the payout process at step S 59 , the payouts corresponding to each of the contents of the treasure boxes  301  selected are accumulated and awarded. Here, the payout may be done every each of the contents of the treasure boxes  301  is displayed.  
      As mentioned, the CPU  50  works as “the lottery selection device” when the process at step S 77  in the treasure bonus process is executed.  
      And, the CPU  50  works as “the payout devices” when the process at step  59  in the another process is executed.  
      As mentioned above in detail, in the slot machine  1  of the embodiment, during the treasure bonus game, if there exists the “OCTOPUS” in the treasure box  301  selected by the player on the lower liquid crystal display  4  (step S 74 : YES, see  FIG. 25 ), the treasure box  301  to be opened by the “OCTOPUS” is determined by the lottery conducted based on the table (see  FIG. 28 ) and the random number value sampled through the random number sampling circuit  56  in a range of 0 to 127 by using the code No. (see  FIG. 21 ) corresponding to each of the treasure boxes  301  (step S 77 ). And the procedure will shift to step S 78 . The payout number based on the content of the treasure box  301  (any of “5”, “10”, “20”, “30”, “40”, “50”, “60”, “70”, “80”, “100”, and “200”) opened by the “OCTOPUS” will be paid out in addition to the payout number based on the content of the treasure box  301  (any of “5”, “10”, “20”, “30”, “40”, “50”, “60”, “70”, “80”, “100”, and “200”) selected by the player (see step S 59 ,  FIG. 1 ). Therefore, it is difficult for the player to anticipate a payout which is added up, thus, a new feeling can be given to the player who plays the game in which the payout is given corresponding to the selection element (treasure box  301 ) selected by the player.  
      Further, if there exists another “OCTOPUS” in the treasure box  301  opened by the octopus (step S 74 : YES, see  FIG. 26 ), one treasure box  301  to be opened by the “OCTOPUS” is determined among the treasure boxes  301  not opened by the lottery conducted based on the table (see  FIG. 28 ) and the random number value sampled by the random number sampling circuit  56  in a range of 0 to 127 by using the code No. (see  FIG. 21 ) corresponding to each of the treasure boxes  301  (step S 77 ). And, the payout number based on the content of the treasure box  301  (any of “5”, “10”, “20”, “30”, “40”, “50”, “60”, “70”, “80”, “100”, and “200”) opened by the “OCTOPUS” will be paid out in addition to the payout number based on the content of the treasure box  301  (any of “5”, “10”, “20”, “30”, “40”, “50”, “60”, “70”, “80”, “100”, and “200”) selected by the player (see step S 59 ,  FIG. 1 ). Thus, the treasure box  301  will be opened continuously, as long as there exists the “OCTOPUS” in the treasure box  301  opened by the other “OCTOPUS”, therefore, since there will be a probability to continuously obtain a large payout, such situation is beneficial for the player. As a result, strong interest for the game can be given to the player who plays the game in which the payout is given corresponding to the selection element (treasure box  301 ) selected by the player.  
      Here, the present invention is not limited to the above embodiment. And various changes and modification can be done within the scope of the present invention.  
      For example, there may be two or more kinds of the “OCTOPUS” coming out of the treasure box which is opened. In this case, a “RED OCTOPUS” and a “BLUE OCTOPUS” being in the treasure boxes are preset as the “OCTOPUS” stored in the treasure box  301  and the procedure shown in  FIG. 29  is executed. That is, after the procedure at step S 73  in the treasure bonus process shown in  FIG. 19  is executed, as shown in  FIG. 29 , the procedure will shift to step S 101  and it is determined whether the “OCTOPUS” coming out of the treasure box  301  opened is red or blue. In this determination, if it is determined that the “OCTOPUS” is “RED” (step S 101 : YES), the procedure will return to step S 74  shown in  FIG. 19  and the treasure bonus game will be performed. On the other hand, if it is determined that the “OCTOPUS” is “BLUE” (step S 101 : NO), base free games will be performed at step  102 , after that, the procedure will return to step  75  in the treasure bonus process and the treasure bonus game mentioned above will be performed.  
      In this case, the “OCTOPUS” in the treasure box  301  selected by the player or opened by the “OCTOPUS” is “BLUE” (step S 101 : NO), the base free games will be performed in the treasure bonus game (step S 102 ), therefore, the slot machine  1  of the embodiment can give new feeling to the player.  
      Therefore, in this case, the CPU  50  works as “specific game execution device” when the process is executed at step S 102  in  FIG. 29  And, in the treasure bonus game, there may be two or more treasure boxes  301  which are opened by the “OCTOPUS”. And, the content of the treasure box  301  may be only the “OCTOPUS”. And, the content of the treasure box  301  may be two or more of the “OCTOPUS”. In this case, if the treasure box  301  which is opened has two or more the “OCTOPUS”, the treasure boxes  301  to be opened by each “OCTOPUS” are determined.  
      And, in the treasure bonus game, if there is the “OCTOPUS” in the treasure box  301  which is opened by the “OCTOPUS” (step S 74 : YES, see  FIG. 26 ), the player may be allowed to newly select the treasure box  301  displayed on the lower liquid crystal display  4 .  
      And, in the treasure bonus game, if the first specific selection element (the treasure box which has the “RED OCTOPUS”) is selected among a plurality of selection elements (treasure boxes  301 ) displayed on the lower liquid crystal display  4 , the treasure box to be opened by the “OCTOPUS” at step S 77  in the treasure bonus process shown in  FIG. 19  is determined among a predetermined group including the unopened selection elements (treasure boxes  301 ) by the random lottery based on the identification number associated with each of the selection elements (No. 1 to No. 23) by using the table shown in  FIG. 28 , however, this embodiment is not limited.  
      For example, at step S 77 , if the first specific selection element (the treasure box  301  which has red “OCTOPUS”) is selected, at least one treasure box  301  opened by the “OCTOPUS” will be selected among the selection elements (the treasure boxes  301 ) which are in the grid on the display (the lower liquid crystal display  4 ), which are in the area away from that by more than the first predetermined number of the boxes and by less than the second predetermined number of the boxes and which have not been opened, by the random lottery. Therefore, the red “OCTOPUS” coming out of the treasure box  301  corresponding to the first specific selection element will select the treasure box  301  among the unopened treasure boxes  301  which are in the area away from that by more than the first predetermined number of the boxes and by less than the second predetermined number of the boxes, that is, not close and not far.  
      For example, at step S 77 , if the first predetermined specific selection element (the treasure box  301  which has the “RED OCTOPUS”) is selected, at least one treasure box  301  opened by the “OCTOPUS” will be selected among the selection elements (the treasure boxes  301 ) which are in the grid on the display (the lower liquid crystal display  4 ), which are in the area away from the first specific selection element (treasure box  301  of the red “OCTOPUS”) by more than the second predetermined number of the boxes, and which have not been open, by the random lottery.  
      Therefore, the “red OCTOPUS” coming out of the treasure box  301  corresponding to the first specific selection element will always select the treasure box  301  among the unopened treasure boxes  301  which are in the area away from that by more than the second predetermined number of the boxes.