Kingdom Hearts: Chain of Memories is an action role-playing game developed by Jupiter, and published by Square Enix for the Game Boy Advance in 2004. It is a sequel to the first game of the Kingdom Hearts series and is set between the events of Kingdom Hearts and Kingdom Hearts II.
In Chain of Memories, the player controls Sora, who loses all of his memories after defeating Ansem. He is trapped in Castle Oblivion, a strange castle where he must fight against various enemies to regain his memories.
The gameplay of Kingdom Hearts: Chain of Memories combines elements of both action role-playing games and card games. Players use cards to attack, defend, and use magic. Cards can be collected and upgraded throughout the game.
Kingdom Hearts: Chain of Memories is highly appreciated for its unique gameplay and engaging storyline. The game has sold more than 3 million copies worldwide.