GAME SYSTEM, GAME DEVICE, GAME DEVICE CONTROL METHOD AND INFORMATION STORAGE MEDIUM

To provide a game system allowing two players to enjoy a game together toward a common goal. In a cooperation requiring event area, a giant rock blocks a path to be followed by a player character. The giant rock cannot be moved by the player character alone. Then, the game device of the player character is made connected for communication to other game device so that another player character is fetched from the connected game device. When the two player characters cooperate at their respective game devices, the giant rock is able to be moved by the two player characters.