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: 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 example of an information processing system includes one or more terminal apparatuses and a server. Each of the one or more terminal apparatuses transmits, to the server, action information indicating an action of a user regarding the terminal apparatus. The server receives the action information from the terminal apparatus. The server stores, for respective types of actions, pieces of history information, each indicating a numerical value corresponding to history of the action of the user. Based on the received action information, the server updates history information corresponding to the action information. Under the condition that a combination of the plurality of pieces of history information satisfies a predetermined combination condition, the server transmits provision information to a terminal apparatus that is the same as or different from the terminal apparatus as the transmission source of the action information.

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: 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 example of an information processing system includes one or more terminal apparatuses and a server. Each of the one or more terminal apparatuses transmits, to the server, action information indicating an action of a user regarding the terminal apparatus. The server receives the action information from the terminal apparatus. The server stores, for respective types of actions, pieces of history information, each indicating a numerical value corresponding to history of the action of the user. Based on the received action information, the server updates history information corresponding to the action information. Under the condition that a combination of the plurality of pieces of history information satisfies a predetermined combination condition, the server transmits provision information to a terminal apparatus that is the same as or different from the terminal apparatus as the transmission source of the action information.