Abstract: An exemplary information processing system includes a first information processing device having a platform of a first type and a second information processing device having a platform of a second type different from the first type. The information processing system stores a basic user list that is a user list representing information of other uses registered while being associated with information of a subject user and that can be used by the first information processing device and the second information processing device. The information processing system changes the basic user list in response to a list change notification from the first information processing device. The information processing system sets, based on the basic user list, content of an application user list used in an application that is executed on the second information processing device.

Abstract: In an example information processing system including a server and at least one apparatus capable of communicating with the server, the apparatus includes at least an application execution unit. The application execution unit executes a predetermined application. The system includes, by either one of the apparatus and the server or by a cooperation of the apparatus and the server, an execution state determination unit and a writing management unit. The execution state determination unit determines whether or not a state of the execution performed by the application execution unit has satisfied a predetermined condition. The writing management unit, when the state has satisfied the predetermined condition, permits a user of the apparatus to write in information managed by the server.

Abstract: An exemplary server communicates with a first information processing device and communicates with a second information processing device. The server stores at least shared game data representing game content that can be used in a first game application that is compatible with the first information processing device and that can be used in a second game application that is compatible with the second information processing device. The server obtains game data generated by executing the first game application on the first information processing device and updates the shared game data based on the obtained game data. The server transmits at least a part of the shared game data updated based on the game data generated by executing the first game application to the second information processing device for being used by the second game application.

Abstract: A communication game system includes a plurality of game apparatuses which are able to wirelessly communicate with each other. Each of the game apparatus registers identifying information of an opponent obtained by a short-distance wireless communication or by user's manual input in a friend list. Thereafter, the game apparatus connects to the Internet, and inquires whether it is possible to communicate with an opponent in the friend list over the network. If it is possible to communicate, the game apparatus obtains an address of the opponent to make a network communication. Even if a user makes a short distance wireless communication with a friend to exchange and register the identifying information or registers the friend by hand and then is parted from the friend, the user can safely communicate with the friend across the network without being exposed to unknown players.

Abstract: An exemplary server stores a first application that is compatible with a first information processing device and not compatible with a second information processing device having a platform of a second type different from the first type. The server transmits presentation information relating to the first application to the second information processing device. The server receives, from the second information processing device, instruction information representing an instruction relating to obtainment of the first application corresponding to the presentation information presented on the second information processing device. The server identifies a first information processing device that is to receive the first application relating to the received instruction information. The server transmits, to the identified first information processing device, the first application represented by the presentation information in response to the instruction information received from the second information processing device.

Abstract: An exemplary server communicates with a first information processing device and communicates with a second information processing device. The server stores at least shared game data representing game content that can be used in a first game application that is compatible with the first information processing device and that can be used in a second game application that is compatible with the second information processing device. The server obtains game data generated by executing the first game application on the first information processing device and updates the shared game data based on the obtained game data. The server transmits at least a part of the shared game data updated based on the game data generated by executing the first game application to the second information processing device for being used by the second game application.

Abstract: An exemplary information processing system includes a first information processing device having a platform of a first type and a second information processing device having a platform of a second type different from the first type. The information processing system stores a basic user list that is a user list representing information of other uses registered while being associated with information of a subject user and that can be used by the first information processing device and the second information processing device. The information processing system changes the basic user list in response to a list change notification from the first information processing device. The information processing system sets, based on the basic user list, content of an application user list used in an application that is executed on the second information processing device.

Abstract: A communication game system includes a plurality of game apparatuses which are able to wirelessly communicate with each other. Each of the game apparatus registers identifying information of an opponent obtained by a short-distance wireless communication or by user's manual input in a friend list. Thereafter, the game apparatus connects to the Internet, and inquires whether it is possible to communicate with an opponent in the friend list over the network. If it is possible to communicate, the game apparatus obtains an address of the opponent to make a network communication. Even if a user makes a short distance wireless communication with a friend to exchange and register the identifying information or registers the friend by hand and then is parted from the friend, the user can safely communicate with the friend across the network without being exposed to unknown players.

Abstract: A communication game system includes a plurality of game apparatuses which are able to wirelessly communicate with each other. Each of the game apparatus registers identifying information of an opponent obtained by a short-distance wireless communication or by user's manual input in a friend list. Thereafter, the game apparatus connects to the Internet, and inquires whether it is possible to communicate with an opponent in the friend list over the network. If it is possible to communicate, the game apparatus obtains an address of the opponent to make a network communication. Even if a user makes a short distance wireless communication with a friend to exchange and register the identifying information or registers the friend by hand and then is parted from the friend, the user can safely communicate with the friend across the network without being exposed to unknown players.

Abstract: A communication game system includes a plurality of game apparatuses which are able to wirelessly communicate with each other. Each game apparatus registers identifying information of an opponent obtained by a short-distance wireless communication or by user's manual input in a friend list. Thereafter, the game apparatus connects to the Internet, and inquiries whether it is possible to communicate with an opponent in the friend list over the network. If it is possible to communicate, the game apparatus obtains an address of the opponent to make a network communication. Even if a user makes a short distance wireless communication with a friend to exchange and register the identifying information or registers the friend by hand and then is parted from the friend, the user can safely communicate with the friend across the network without being exposed to unknown players.

Abstract: A communication game system includes a plurality of game apparatuses which are able to wirelessly communicate with each other. Each of the game apparatus registers identifying information of an opponent obtained by a short-distance wireless communication or by user's manual input in a friend list. Thereafter, the game apparatus connects to the Internet, and inquires whether it is possible to communicate with an opponent in the friend list over the network. If it is possible to communicate, the game apparatus obtains an address of the opponent to make a network communication. Even if a user makes a short distance wireless communication with a friend to exchange and register the identifying information or registers the friend by hand and then is parted from the friend, the user can safely communicate with the friend across the network without being exposed to unknown players.

Abstract: A communication game system includes a plurality of game apparatuses which are able to wirelessly communicate with each other. Each of the game apparatus registers identifying information of an opponent obtained by a short-distance wireless communication or by user's manual input in a friend list. Thereafter, the game apparatus connects to the Internet, and inquires whether it is possible to communicate with an opponent in the friend list over the network. If it is possible to communicate, the game apparatus obtains an address of the opponent to make a network communication. Even if a user makes a short distance wireless communication with a friend to exchange and register the identifying information or registers the friend by hand and then is parted from the friend, the user can safely communicate with the friend across the network without being exposed to unknown players.

Abstract: A communication game system includes a plurality of game apparatuses which are able to wirelessly communicate with each other. Each of the game apparatus registers identifying information of an opponent obtained by a short-distance wireless communication or by user's manual input in a friend list. Thereafter, the game apparatus connects to the Internet, and inquires whether it is possible to communicate with an opponent in the friend list over the network. If it is possible to communicate, the game apparatus obtains an address of the opponent to make a network communication. Even if a user makes a short distance wireless communication with a friend to exchange and register the identifying information or registers the friend by hand and then is parted from the friend, the user can safely communicate with the friend across the network without being exposed to unknown players.

Abstract: A communication game system includes a plurality of game apparatuses which are able to wirelessly communicate with each other. Each of the game apparatus registers identifying information of an opponent obtained by a short-distance wireless communication or by user's manual input in a friend list. Thereafter, the game apparatus connects to the Internet, and inquires whether it is possible to communicate with an opponent in the friend list over the network. If it is possible to communicate, the game apparatus obtains an address of the opponent to make a network communication. Even if a user makes a short distance wireless communication with a friend to exchange and register the identifying information or registers the friend by hand and then is parted from the friend, the user can safely communicate with the friend across the network without being exposed to unknown players.

Abstract: A communication game system includes a plurality of game apparatuses which are able to wirelessly communicate with each other. Each of the game apparatus registers identifying information of an opponent obtained by a short-distance wireless communication or by user's manual input in a friend list. Thereafter, the game apparatus connects to the Internet, and inquires whether it is possible to communicate with an opponent in the friend list over the network. If it is possible to communicate, the game apparatus obtains an address of the opponent to make a network communication. Even if a user makes a short distance wireless communication with a friend to exchange and register the identifying information or registers the friend by hand and then is parted from the friend, the user can safely communicate with the friend across the network without being exposed to unknown players.

Abstract: A communication game system includes a plurality of game apparatuses which are able to wirelessly communicate with each other. Each game apparatus registers identifying information of an opponent obtained by a short-distance wireless communication or by user's manual input in a friend list. Thereafter, the game apparatus connects to the Internet, and inquiries whether it is possible to communicate with an opponent in the friend list over the network. If it is possible to communicate, the game apparatus obtains an address of the opponent to make a network communication. Even if a user makes a short distance wireless communication with a friend to exchange and register the identifying information or registers the friend by hand and then is parted from the friend, the user can safely communicate with the friend across the network without being exposed to unknown players.

Abstract: A communication game system includes a plurality of game apparatuses which are able to wirelessly communicate with each other. Each game apparatus registers identifying information of an opponent obtained by a short-distance wireless communication or by user's manual input in a friend list. Thereafter, the game apparatus connects to the Internet, and inquiries whether it is possible to communicate with an opponent in the friend list over the network. If it is possible to communicate, the game apparatus obtains an address of the opponent to make a network communication. Even if a user makes a short distance wireless communication with a friend to exchange and register the identifying information or registers the friend by hand and then is parted from the friend, the user can safely communicate with the friend across the network without being exposed to unknown players.

Abstract: A communication game system includes a plurality of game apparatuses which are able to wirelessly communicate with each other. Each game apparatus registers identifying information of an opponent obtained by a short-distance wireless communication or by user's manual input in a friend list. Thereafter, the game apparatus connects to the Internet, and inquiries whether it is possible to communicate with an opponent in the friend list over the network. If it is possible to communicate, the game apparatus obtains an address of the opponent to make a network communication. Even if a user makes a short distance wireless communication with a friend to exchange and register the identifying information or registers the friend by hand and then is parted from the friend, the user can safely communicate with the friend across the network without being exposed to unknown players.

Abstract: A communication game system includes a plurality of game apparatuses which are able to wirelessly communicate with each other. Each of the game apparatus registers identifying information of an opponent obtained by a short-distance wireless communication or by user's manual input in a friend list. Thereafter, the game apparatus connects to the Internet, and inquires whether it is possible to communicate with an opponent in the friend list over the network. If it is possible to communicate, the game apparatus obtains an address of the opponent to make a network communication. Even if a user makes a short distance wireless communication with a friend to exchange and register the identifying information or registers the friend by hand and then is parted from the friend, the user can safely communicate with the opponent is to be added to the multiplayer game session, one of the participants transmits identifying information to introduce the communication opponents to each other.

Abstract: A communication game system includes a plurality of game apparatuses which are able to wirelessly communicate with each other. Each game apparatus registers identifying information of an opponent obtained by a short-distance wireless communication or by user's manual input in a friend list. Thereafter, the game apparatus connects to the Internet, and inquiries whether it is possible to communicate with an opponent in the friend list over the network. If it is possible to communicate, the game apparatus obtains an address of the opponent to make a network communication. Even if a user makes a short distance wireless communication with a friend to exchange and register the identifying information or registers the friend by hand and then is parted from the friend, the user can safely communicate with the friend across the network without being exposed to unknown players.