Patent ID: 8182345

Claim:
A game system comprising: a plurality of game machines; and a server in communication with said game machines, each of said game machines capable of playing different kinds of games from each other, each of said game machines comprising a first sending device for sending sending-information including: identification-information to identify a user, said server comprising: a point storage device for storing the identification-information and points and corresponding identification-information with the points, the points are given in accordance with contents of a user's playing in each game on each of said game machines and have a trading value unified thorough the games; a data storage device for storing user available data that the identification-information and at least one of the plurality of unique datas available to the user are associated with each other; a storage control device for, when said server receives a trading request to trade any one of the plurality of unique datas together with the identification-information, updating the points, corresponding to the received identification-information in said point storage device, to a value obtained by subtracting points corresponding to the unique data to be traded, a trading device for trading the points for any one of a plurality of unique datas, each of which is used uniquely in any one of the games, and allows the unique data to be traded to be reflected in the user available data corresponding to the received identification-information in said data storage device; and a second sending device for sending the traded unique data, wherein one of said game machines each and said server comprises a converting device for converting play-information indicating the contents of user's playing in each game on each of said game machines into the points; wherein when said server receives a donation request including: the identification-information of a sender; the identification-information of a receiver, and: points to be donated from the sender to the receiver: said storage control device subtracts the points to be donated from the points stored in said point storage device in association with the identification-information of the sender, and adds the points to be donated to the points stored in said point storage device in association with the identification-information of the receiver.