Kingdom Hearts 358/2 Days is an action role-playing game developed and published by Square Enix for the Nintendo DS. It is a new installment in the best-selling Kingdom Hearts series. The story takes place between the first Kingdom Hearts and Kingdom Hearts II.

The game centers on the daily life of the main character Roxas, exploring the time from his creation during the first game (Kingdom Hearts), his days as a member of Organization XII and eventually leading directly into Kingdom Hearts II. It features 3D graphics, and single and multiplayer modes of play. Kingdom Hearts 358/2 Days also features a multiplayer mode for the first time, allowing players to control their favorite Organization XIII members. This family-friendly game will be available on September 29th. ESRB E10+.