The present invention relates to the technology of recognizing and reading each game chip although game chips are stacked. The present invention is a game chip storing data readable by a reader/writer having an antenna which emits an electromagnetic wave and available in a stack of game chips, and includes: an IC device for communicating data at a request from the reader/writer, an antenna coil which is connected to the IC device, gets into electromagnetic coupling with an antenna of the reader/writer, can provide electric power to the IC device, is configured to enter a resonant state through an electromagnetic wave, and can transfer data to the reader/writer by load modulation, and a booster coil for configuring a resonant circuit by electromagnetic coupling through an electromagnetic wave from the reader/writer.