A game system is designed so that, when an operation input that sequentially selects a plurality of player characters from a plurality of player characters placed in a character selection area has been performed, and it has been determined that the sequentially selected player characters satisfy a selection allowance condition that is set based on an attribute, each of the sequentially selected player characters attacks an enemy character, and the player character that has attacked the enemy character is deleted from the character selection area. The same number of player character as the player character deleted from the character selection area is additionally placed in the character selection area, and an attribute of each player character that is additionally placed in the character selection area is determined according to a given rule.