A game system allows a player's wish to influence appearance of event production squares. A game control device functions as various devices, including a device for displaying a route including plural squares and symbols representing attributes of the squares, on a display, a device for determining a value to be obtained by a player based on an instruction of the player via an input device, a device for moving a player character on the route according to the obtained value, a device for controlling a peculiar value corresponding to an attribute of the squares based on a stop position of the character, a device for controlling appearance of event production squares based on the peculiar value, and a device for producing an event relating to the event production square under a condition that the event production square and a stop position of the character establish a predetermined relationship.