SERVER DEVICE OF GAME SYSTEM AND COMPUTER PROGRAM OF THE SAME

PROBLEM TO BE SOLVED: To provide a server device of a game system which can expand an opportunity of acquiring identification information to be used in a game machine.SOLUTION: In a server device of a game system which includes: a game server section 2A for storing play data D1 of a user recorded in a game of a game machine 3 in association with card ID as first identification information acquired by the user, and using the play data D1 associated with designated card ID for the utilization of the user when the user designates the card ID and plays the game; and a Web server section 2B for identifying a user of a terminal device 4 with user ID as second identification information allocated uniquely to each user, and providing prescribed service to the identified user, means for issuing card ID in response to the user's demand from the terminal device 4 and allocating it to the user is provided.