Abstract: In a game system, a server apparatus (3) that communicates with a plurality of game devices (1) stores play data elements for a plurality of players and public IDs for identifying a plurality of players in a latest play data table (T1) and a public ID table (T2). The server apparatus (3) transmits to a mobile terminal (4), which is being used by a player, information depending on latest play data elements stored in the latest play data table (T1), the latest play data elements belonging to other players who have been registered with the personal relationship table (T3) as a friend of the player possessing the mobile terminal (4). Upon receiving a public-ID-change request from a mobile terminal (4), which is being used by a player, the server apparatus (3) changes the public ID of the player stored in the public ID table (T2).

Abstract: In a game system, a server apparatus (3) that communicates with a plurality of game devices (1) stores play data elements for a plurality of players and public IDs for identifying a plurality of players in a latest play data table (T1) and a public ID table (T2). The server apparatus (3) transmits to a mobile terminal (4), which is being used by a player, information depending on latest play data elements stored in the latest play data table (T1), the latest play data elements belonging to other players who have been registered with the personal relationship table (T3) as a friend of the player possessing the mobile terminal (4). Upon receiving a public-ID-change request from a mobile terminal (4), which is being used by a player, the server apparatus (3) changes the public ID of the player stored in the public ID table (T2).

Abstract: In a game system, a server apparatus (3) that communicates with a plurality of game devices (1) receives a play data element and a card ID of a card (2) whenever a player plays using any of the game devices (1) using the card (2), and generates terminal-provided play data elements indicating the skill of the player in the game on the basis thereof. The server apparatus (3) stores the terminal-provided play data element, the card ID, and a date data item indicating the current date in such a manner that they are mutually associated. The server apparatus (3) transmits, to a mobile terminal (4), which is owned by a second player who designates a first player as the second player's friend, various pieces of information.

Abstract: There are stored in a database stored in a host server (12) of a server system (10), a portable phone terminal ID, a player ID, a card ID, and individual information in association with one another. The card ID is identical to a card ID stored in a card (28) carried by a player. A course data set contained in the individual information specifies an order and names of music pieces to be played by a game device (18) capable of communicating with the game server system (10). A player uses a portable information terminal (26) to execute an application to specify a card ID and generate a course data set, the generated course data set is registered in the database together with a portable telephone terminal ID of the portable information terminal (26), as individual information corresponding to the card ID. When a player inserts his/her own card (28) in a game device (18), the game device (18) transmits to the game device (18) a course data set corresponding to the card ID by accessing host server (12).

Abstract: A game system is has at least three game devices (2A to 2D). Each game device (2A to 2D) executes a program to enable a player to play a game, and the processor (21) thereof identifies at least two game devices (2A to 2D) that will participate in a game before starting the game. Processor (21) also generates game information (score information and an attack identifier) corresponding to progress of a game that is being played, and transmits, by means of a communication interface (22), the generated game information to each of the above two or more game devices (2A to 2D), while processor (21) receives game information generated at each of the at least two game devices (2A to 2D) and causes changes in game situations based on the received game information.