Abstract: A function for exchanging a game item for other unpredictable game item is provided so that a game is given an unpredictable aspect. For game item exchange, a bottle mail function is provided. In order to apply the bottle mail function, two game devices are connected for communication via a communication cable, and so on; one of the game items owned by its own game character is designated; and game item specifying information specifying the designated game item is exchanged between two game devices. While using the game item specified by the game item specifying information obtained from the other game device as an exchange source game item, an exchange object game item correlated with that exchange source game item is read from the item exchange table. The player character then owns the game item read in the place of the game item originally designated for the exchange.

Abstract: 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.

Abstract: 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.

Abstract: A function for exchanging a game item for other unpredictable game item is provided so that a game is given an unpredictable aspect. For game item exchange, a bottle mail function is provided. In order to apply the bottle mail function, two game devices are connected for communication via a communication cable, and so on; one of the game items owned by its own game character is designated; and game item specifying information specifying the designated game item is exchanged between two game devices. While using the game item specified by the game item specifying information obtained from the other game device as an exchange source game item, an exchange object game item correlated with that exchange source game item is read from the item exchange table. The player character then owns the game item read in the place of the game item originally designated for the exchange.