Patent ID: 8062131

Claim:
A game system including a game apparatus having a touch panel, and a card detachably mountable at a predetermined position of the touch panel; wherein: the card has at least one aperture formed of a hole or a cut-out portion having a predetermined shape; and the game apparatus comprises: determination information storage locations for storing determination information for determining whether or not an input operation on the touch panel has been performed along the aperture of the card in the state where the card is placed at the predetermined position of the touch panel; and at least one computer processor configured to: detect an input track based on a signal from the touch panel; determine whether or not the input operation on the touch panel has been performed along the aperture of the card based on the detected input track and the determination information stored by the determination information storage locations; and generate an event which changes the progress of a game in a virtual game world displayed on a display of the game apparatus when the determined input operation on the touch panel has been performed along the aperture, wherein said change of the progress of the game is related to player characters and objects in the virtual game world.