A toy set that enables communication between a game device and a toy without changing a hardware configuration of the game device includes a program stored in a storage medium that when executed causes the game device to detect a sequence of single frequency sounds, output a voice corresponding to a combination of the detected sounds, generate a plurality of single frequency sound and generate a control signal by a combination of the sounds. The toy incorporates a sound generation means, a voice input means, a control means and a sensing means. The control means includes a generation means for generating a control signal as a sequence of plurality of single frequency sounds sent out from the sound generation means of the toy. When the control signal is inputted from the game device, the toy performs a predetermined action which corresponds to the control signal.