Action role-playing game developed and published for the PlayStation 2 by [[Squaresoft]] (now [[Square Enix]]).  Features original characters alongside those of the [[Final Fantasy]] series and [[Disney]] films (these including themed worlds).

A "director's cut" rerelease, [i]Kingdom Hearts Final Mix[/i], included extended scenes and a new boss battle against a member of [[Organization XIII]].

h4. Main Characters

* [[sora_(kingdom_hearts)|Sora]]
* [[Riku (kingdom hearts)|]]
* [[kairi_(kingdom_hearts)|Kairi]]
* [[Mickey Mouse]]
* [[Donald Duck]]
* [[Goofy]]

h4. Final Fantasy characters 

* [[Squall Leonhart]] ("Leon")
* [[Yuffie Kisaragi]]
* [[Aerith Gainsborough]]
* [[Cid Highwind]]
* [[Cloud Strife]]
* [[Tidus]]
* [[Wakka]]
* [[Selphie Tilmitt]]
* [[Sephiroth]]

h4. Antagonists

* [[ansem seeker of darkness|'Ansem']]
* [[Maleficent]]
* The [[Heartless (kingdom hearts)|]]