A game system (1) is provided with a monitor (3), a touch panel (4) and a sequence data storage device which stores sequence data in which operation time of the touch panel (4) during a game and appearance time when an object (O) for indicating an operation at the operation time is displayed on a game area (A). The game system (1) accepts a determination operation of an appearance position which determines the appearance position (p) of the object (O) in correspondence to the appearance time from the touch panel (4) generates the object (O) at the appearance position (p), changes the way (W) until the object (O) arrives in a determination line (Li) based on the appearance position (p) and changes an arrival position where the object (O) arrives in the determination line (Li).