To create a sense of superiority to others, a sense of unity or the like without hindering original game progress, while allowing a player to participate in the game voluntarily, and allowing the game to progress unattendedly in principle, without introducing a new game device.

A game system includes many kinds of game devices, a terminal device, and a controller. The game devices are provided with: first common game participation reception means for receiving participation instruction information in a common game; and first common game situation display means for displaying progress situations of the common game based on common game situation information received from the controller. The controller is provided with a common game execution means for executing the common game on the basis of the participation instruction information received from the game devices and the terminal device. The terminal device is provided with: a second common game participation reception means for receiving participation instruction information in the common game; and a second common game situation display means for displaying the progress situations of the common game on the basis of the common game situation information received from the controller.