Patent ID: 8562404

Claim:
A computer device including one or more processors, the computer device for executing a game program using a plurality of cards to play a game, said computer device comprising: a first receiving unit configured to receive identification information read from a card in which the identification information is stored, the identification information specifying the card; a retrieving unit configured to retrieve card information corresponding to the identification information from a memory in which a plurality of the card information corresponding to a plurality of the identification information are pre stored; a game executing unit configured to execute the game program based on the card information retrieved by the retrieving unit; a registering unit configured to register a plurality of pieces of the identification information corresponding to the plurality of cards and received by the first receiving unit; a first display control unit configured to display all or part of the card information corresponding to a predetermined number of pieces of the identification information after receiving the predetermined number of pieces of the identification information by the first receiving unit; a requesting unit, implemented by using one or more processors, the requesting unit configured to request to read the identification information from the plurality of cards before starting the game program and to request to re-read the read identification information from the plurality of cards during the game program, the re-reading being performed after displaying the card information by the first display control unit; a determining unit, implemented by using one or more processors, the determining unit configured to determine whether or not the plurality of pieces of identification information re-read from the plurality of cards in response to a re-reading request during the game program correspond to the plurality of pieces of identification information registered by the registering unit; and a second display control unit, implemented by using one or more processors, the second display control unit configured to display information indicating that the card corresponding to the identification information, which is determined not to correspond by the determining unit, is changed to be in a use prohibited state in the game executing unit when the determining unit determines that the identification information does not correspond to the identification information registered by the registering unit.