Gaming machine and control method thereof

A gaming machine running a normal game and a bonus game developing from the normal game, the gaming machine comprising:

• an input device configured to add a physical game medium with a monetary value to the gaming machine;
• a validator configured to validate the physical game medium that has been added to the gaming machine;
• an operation device configured to receive a bet from a player;
• a symbol display device configured to display a result of a game by rearranging symbols;
• an award payout mechanism by which other physical game medium is paid out to the player or is established as a credit balance for the player according to the result of the game;
• a storage device configured to store a free game number random determination table in which the number of times of execution of a free game is associated with a random number;
• and
• a controller configured to establishes the credit balance based, at least in part, on the validated physical game medium, the player's bet, and the result of the game,
• the controller being programmed to execute, as a result of the player's bet, the processes of;
• (1A) as the normal game, randomly selecting the symbols which are to be rearranged on the symbol display device;
• (1B) rearranging the symbols selected in the process (1A) on the display device and awarding a benefit in accordance with a combination of the rearranged symbols;
• (1C) when the benefit awarded in the process (1B) is the right to run the bonus game, counting how many predetermined bonus symbol is included in the combination of the symbols with which the right to run the bonus game is awarded;
• (1D) performing random determination based on the free game number random determination table for the number of times corresponding to the number of the predetermined bonus symbol counted in the process (1C), wherein a free game number is randomly determined by the random determination for each predetermined bonus symbol and a total number is determined as a total sum of the free game numbers determined for the number of times corresponding to the number of the predetermined bonus symbol;
• (1E) when the number of the predetermined bonus symbol counted in the process (1C) is equal to or larger than a predetermined number, awarding the right to execute the free game for a predetermined number of times;
• and
• (1F) when the number of the predetermined bonus symbol counted in the process (1C) is equal to or larger than the predetermined number, as the number of times of execution of the free game, awarding a sum of the total number determined in the process (1D) and the predetermined number of times awarded in the process (1E).