An in-vehicle performance device is an in-vehicle performance device that performs a game that is played by an occupant in a vehicle, and includes a motion detector configured to detect a motion of the occupant irrelevant to driving the vehicle, a display configured to display an image visually recognizable by the occupant, and a display controller configured to display a response image according to the motion of the occupant on the display on the basis of the motion of the occupant detected by the motion detector, and output a result of a game based on a predetermined rule.