Slot Machine Executing Free Game and Control Method Thereof

Abstract

According to the slot machine of the present invention, a free game is executed as triggered by establishment of a predetermined condition in a normal game. A bonus is executed when a specific condition is established before competing execution of the free game. At this time, state data indicating a state of the free game is stored in a memory. The free game is executed based on the state data after completing execution of the bonus game.

1 . A slot machine comprising:
 a symbol display capable of variably displaying a plurality of symbols;   a memory capable of storing data concerning games; and   a controller programmed to execute the following processing of:   (A) executing a normal game in which said plurality of symbols are variably displayed and then stop-displayed to said symbol display after a BET of a game medium and a payout amount is determined according to the stop-displayed symbols or a combination thereof;   (B) executing a free game which is conducted without a BET of a game medium as triggered by establishment of a predetermined condition in the normal game executed in said processing (A);   (C) storing state data indicating a state of the free game and executing a bonus game which is relatively advantageous to a player when a specific condition is established in said free game before completing execution of said processing (B); and   (D) executing said free game based on the state data stored in said memory after executing said processing (C) instead of executing said processing (B).   
   
   
       2 . The slot machine according to  claim 1 ,
 wherein   said free games include unit free game repeatedly executed plural times,   said processing (C) is processing of storing number data indicating a number of unit free games identified based on a number of unit free games executed before establishment of a specific condition in said specific memory and executing said bonus game when the specific condition is established in said free game before completing execution of processing (B), and   said processing (D) is processing of executing the unit free games a number of times identified based on the number data stored in said memory after executing said processing (C) instead of executing said processing (B).   
   
   
       3 . A slot machine comprising:
 a symbol display capable of variably displaying a plurality of symbols; and   a controller programmed to execute the following processing of:   (A) executing a normal game in which said plurality of symbols are variably displayed and then stop-displayed to said symbol display after a BET of a game medium and a payout amount is determined according to the stop-displayed symbols or a combination thereof;   (B) executing unit free games which are conducted without a BET of a game medium a number of times determined based on a predetermined method as triggered by establishment of a predetermined condition in the normal game executed in said processing (A); and   (C) executing the unit free games a number of times determined again after executing said processing (B) when a predetermined condition is established in said unit free game before completing execution of said processing (B).   
   
   
       4 . A slot machine comprising:
 a symbol display capable of variably displaying a plurality of symbols; and   a controller programmed to execute the following processing of:   (A) executing a normal game in which said plurality of symbols are variably displayed and then stop-displayed to said symbol display after a BET of a game medium and a payout amount is determined according to the stop-displayed symbols or a combination thereof;   (B) executing unit free games which are conducted without a BET of a game medium a number of times determined based on a predetermined method as triggered by establishment of a predetermined condition in the normal game executed in said processing (A); and   (C) executing the unit free games a number of times determined again when a predetermined condition is established in a last unit free game out of the unit free games executed in said processing (B).   
   
   
       5 . The slot machine according to  claim 4 ,
 wherein   said processing (B) includes the following processing of:   (B-1) determining a number of the unit free games as triggered by establishment of the predetermined condition in the normal game executed in said processing (A); and   (B-2) executing the unit free games the number of times determined in said processing (B-1), and   said processing (B-2) includes processing of establishing the predetermined condition in said last unit free game when the number of the unit free games determined in said processing (B-1) is less than a predetermined number.   
   
   
       6 . A control method of a slot machine comprising the following steps of:
 (A) executing a normal game in which a plurality of symbols are variably displayed and then stop-displayed to a symbol display after a BET of a game medium and a payout amount is determined according to the stop-displayed symbols or a combination thereof;   (B) executing a free game which is conducted without a BET of a game medium as triggered by establishment of a predetermined condition in the normal game executed in said processing (A);   (C) storing state data indicating a state of the free game and executing a bonus game which is relatively advantageous to a player when a specific condition is established in said free game before completing execution of said processing (B); and   (D) executing said free game based on the state data stored in said memory after executing said processing (C) instead of executing said processing (B).   
   
   
       7 . A control method of a slot machine comprising the following steps of:
 (A) executing a normal game in which a plurality of symbols are variably displayed and then stop-displayed after a BET of a game medium and a payout amount is determined according to the stop-displayed symbols or a combination thereof;   (B) executing unit free games which are conducted without a BET of a game medium a number of times determined based on a predetermined method as triggered by establishment of a predetermined condition in the normal game executed in said processing (A); and   (C) executing the unit free games a number of times determined again after executing said processing (B) when a predetermined condition is established in said unit free game before completing execution of said processing (B).   
   
   
       8 . A control method of a slot machine comprising the following steps of:
 (A) executing a normal game in which a plurality of symbols are variably displayed and then stop-displayed to a symbol display after a BET of a game medium and a payout amount is determined according to the stop-displayed symbols or a combination thereof;   (B) executing unit free games which are conducted without a BET of a game medium a number of times determined based on a predetermined method as triggered by establishment of a predetermined condition in the normal game executed in said processing (A); and   (C) executing the unit free games a number of times determined again when a predetermined condition is established in a last unit free game out of the unit free games executed in said processing (B).