Game system

Abstract

One object is to provide a video game system that can technically restrain real money trade. In accordance with one aspect, a server device 10 according to an embodiment of the present invention includes: a determination unit 58 configured to determine whether an exchange of exhibited game contents and bid game contents is concluded based on a game content parameter value characterizing the exhibited game contents and the game content parameter value characterizing the bid game contents; and an updating unit 61 configured to update an owned game content storage unit 52 such that, only when the determination unit 58 determines that the exchange is concluded, the exhibited game contents are stored in association with player identification information of a bidder player and the bid game contents are stored in association with player identification information of an exhibitor player.

What is claimed is: 
     
         1 . A video game system for providing video games to terminal devices of one or more players via a network, the video game system comprising:
 an owned game content storage unit configured to store one or more first game contents owned by a first player among the one or more players in association with first player identification information identifying the first player, and to store one or more second game contents owned by a second player among the one or more players in association with second player identification information identifying the second player;   an exhibition request obtaining unit configured to obtain from the first player an exhibition request for exhibiting the first game contents;   an exchange request obtaining unit configured to obtain from the second player an exchange request for exchanging the second game contents for the first game contents;   a determination unit configured to determine whether or not to conclude an exchange of the first game contents and the second game contents based on comparison of a predetermined threshold value with a difference between a trade quantity of the first game contents and a trade quantity of the second game contents when the exchange request obtaining unit obtains the exchange request; and   an updating unit configured to update the owned game content storage unit such that the first game contents are stored in association with the second player identification information and the second game contents are stored in association with the first player identification information only when the determination unit determines that the exchange is concluded,   wherein when the determination unit determines that the exchange is not concluded the updating unit erases the second game contents from the owned game content storage unit.   
     
     
         2 . The video game system of  claim 1  wherein the determination unit specifies the trade quantity of the first game contents based on the exhibition request. 
     
     
         3 . The video game system of  claim 1  wherein the determination unit specifies the trade quantity of the second game contents based on the exchange request. 
     
     
         4 . The video game system of  claim 1  wherein the determination unit specifies the trade quantity of the first game contents and the trade quantity of the second game contents based on the exchange request. 
     
     
         5 . The video game system of  claim 1 , wherein the determination unit determines that the exchange of the first game contents and the second game contents is not concluded when the difference is larger than the predetermined threshold value. 
     
     
         6 . A method using a game computer for providing video games to terminal devices of one or more players via a network, the method comprising the steps of:
 storing, in a predetermined memory, one or more first game contents owned by a first player among the one or more players in association with first player identification information identifying the first player, and storing one or more second game contents owned by a second player among the one or more players in association with second player identification information identifying the second player;   obtaining from the first player an exhibition request for exhibiting the first game contents;   obtaining from the second player an exchange request for exchanging the second game contents for the first game contents;   determining whether an exchange of the first game contents and the second game contents is concluded based on comparison of a predetermined threshold value with a difference between a trade quantity of the first game contents and a trade quantity of the second game contents when the exchange request is obtained in the step of obtaining the exchange request; and   updating the predetermined memory such that the first game contents are stored in association with the second player identification information and the second game contents are stored in association with the first player identification information only when it is determined in the step of determination that the exchange is concluded,   wherein when it is determined in the step of determination that the exchange is not concluded, the second game contents are erased from the predetermined memory in the step of updating.