Kingdom Hearts: Chain of Memories is an action role-playing game developed by Jupiter and published by Square Enix for the Game Boy Advance. Released in 2004, it serves as a direct sequel to Kingdom Hearts and follows protagonist Sora as he navigates a mysterious castle. The game features a unique card-based battle system and fits within the series timeline between Kingdom Hearts and Kingdom Hearts 358/2 Days.
Kingdom Hearts: Chain of Memories is the second game in the Kingdom Hearts series. It is a direct sequel to Kingdom Hearts and exclusive to the Game Boy Advance. It was published by Square Enix and developed by Jupiter, and was released in 2004. Chronologically, it is the third game in the timeline after Kingdom Hearts Birth by Sleep and Kingdom Hearts, and takes place during Kingdom Hearts 358/2 Days.