Kingdom Hearts: Chain of Memories is an action role-playing video game co-developed by Square Enix and Jupiter, and published by Square Enix in collaboration with Disney Interactive in 2004 for the Game Boy Advance. The game serves as an intermediary between the two larger-scale PlayStation 2 games in the Kingdom Hearts series. It was one of the first GBA games to incorporate full motion video (FMV).

Kingdom Hearts is a 2002 action role-playing video game developed by Square for the PlayStation 2 video game console. It is the first game in the Kingdom Hearts series and is the result of a collaboration between Square and The Walt Disney Company. An expanded re-release of the game featuring new and additional content, Kingdom Hearts Final Mix, was released exclusively in Japan in December 2002. The Final Mix version of the game was later remastered in high definition and released globally as a part of the Kingdom Hearts HD 1.5 Remix collection for the PlayStation 3. The game was later ported and released as part of the bundled Kingdom Hearts HD 1.5 + 2.5 Remix collection for PlayStation 4 in March 2017, Xbox One in February 2020, Windows in March 2021, and Nintendo Switch in February 2022.