Abstract: A convertible mouse converts from a mouse mode to a joystick mode and vice versa. In mouse mode, the convertible mouse is a computer mouse with a recess positioned in a rear portion of the convertible mouse. The computer mouse has a sensor for deciphering mouse movement. A joystick handle is housed within the recess. The joystick handle is attached to a connecting member which is attached to the computer mouse. The joystick handle is operably positioned within the recess so that the joystick handle can be rotated from the recess when transforming the convertible mouse into joystick mode. A joystick button is positioned on the joystick handle for cooperation with a computer program.