To provide a game system in which a game is readily played by a game machine regardless of time, a place and the kind of the game machine by utilizing communication equipment carried by a player.

A server 1 for the game system is constituted so as to transmit and receive data to/from the portable telephone of the player on a communication network and is provided with a game data storage part 20 receiving the attribute information and game data of the player from the player and storing them, a game data transmission part 29 transmitting the game data of the player stored in the game data storage part 20 to the communication equipment of the player in the case of receiving the request of acquiring the game data from the communication equipment of the player and a game data editing part 27 updating the game data of the player stored in the game data storage part in the case of receiving the request of updating the game data from the portable telephone of the player.