Abstract: A non-limiting example game system includes a main body apparatus that executes a main story of a virtual game, and a game screen is displayed on a display device. If a player operates a ZL button when a predetermined flower object is arranged near a player character, a magic circle appears in front of the player character, and a rhythm game is started. In the rhythm game, a first marker is moved around the player character along an orbiting trajectory, and the player tilts an analog stick at a timing that the first marker arrives at a position that a second marker is arranged so as to designate the position that the second marker is arranged.