To provide a game system using a game card, in which game card using conditions can be set in carrying out processing based on read data on the game card up to now, and combining recorded data on a plurality of game cards to produce game data.

The game system includes a game card for recording or storing game data and game data using condition data, a game card reading means for reading the game data and the using condition data from the game card, a determination means for determining whether or not the read game data are usable based on the using condition data read by the game card reading means, and a game processing means for carrying out game processing using the game data.