Patent ID: 8123612

Claim:
A game system, comprising: a plurality of slot machines; and a common game machine for executing a predetermined bonus game in connection with a base game executed among the plurality of slot machines, each of the plurality of slot machines having: an input device for accepting BET; a display device having a symbol display region for displaying plural types of symbols in a matrix form; a memory for cumulatively storing bonus points in the case where a specific symbol from among the plural types of symbols is rearranged in the symbol display region under a specific condition; and a controller for executing processes for accepting the BET input through the input device, rearranging the plural types of symbols in the symbol display region of the display device, and cumulatively storing the bonus points in the memory, the common game machine having: a common display device provided in common to the plurality of slot machines, the common display device having a symbol display region for displaying plural types of symbols in a matrix form; a common memory for cumulatively storing a part of credit bet through the input device; and a common controller being adapted to execute processing operations of: selecting the slot machine possessing the bonus points; in respect of the selected slot machine, executing the bonus game to simultaneously advance at a same time as a base game at each of the slot machines on the common display device; in the bonus game, randomly determining a specific column or line at a part of a matrix displayed on each of the display devices of the plurality of slot machines in the base game, and rearranging the symbols to be displayed in the determined specific column or line on the common display device so that the specific line or column at the part of the matrix display of each of the determined slot machines is formed as each of columns or lines in a symbol display region of the common display device; subtracting a predetermined number from the bonus points stored in the memory of each of the slot machines, every time the bonus game is executed; and awarding a prize determined based on a cumulative value of the credit stored in the common memory, in the case where a predetermined condition is met during the bonus game.