To provide a virtual mouse device which can reduce unintended returns of a virtual mouse to a default location, and cause the virtual mouse to respond more quickly.

A virtual mouse device is preferably installed in a game machine, and serves as an input device. An image sensor part is laminated on a specific area on a screen of a display part, and detects fingers or a palm of a player that move on or over the specific area. The virtual mouse control part monitors the fingers or palm, and causes a virtual mouse to follow the fingers or palm within the specific area. If the fingers or palm moves out of the specific area, the virtual mouse control part then returns the virtual mouse to a default location. An input unit monitors the motion of the virtual mouse, and causes the display part to move a mouse pointer on the screen depending on the amount and direction of travel of the virtual mouse.