The invention provides a game device and a control method which can require specific operation to a player. The game device is provided with the following: a monitor (2) that displays a game screen (40R); a control panel (3) that has a volume controller (9) that is manipulated such that the position of the outer edge (SP) of a knob part (9T) changes; and an external storage device (20) that stores sequence data (30) comprising reference times, at which the volume controller (9) is supposed to be manipulated during a game, associated with reference positions, indicating the positions at which the aforementioned outer edge (SP) should be at said reference times. On the basis of said sequence data (30), the game device provides information on the reference times and reference positions to a player.