Kingdom Hearts 3D: Dream Drop Distance (Japanese: キングダム ハーツ 3D [ドリーム ドロップ ディスタンス] ) is an action role-playing game developed and published by Square Enix exclusively for the Nintendo 3DS, revealed at E3 2010. The game is the seventh installment in the bestselling Kingdom Hearts series and was released in Japan on March 29, 2012. It was released outside Japan on July 20, 2012 in Europe, July 26, 2012 in Australia and July 31, 2012 in North America. Taking place after the events of Kingdom Hearts Re:coded, the game focuses on Sora and Riku's Mark of Mastery exam in which they have to protect parallel worlds in preparation for the return of Master Xehanort. Besides controlling the two playable characters across a single scenario, the player is able to recruit creatures known as Dream Eaters that are able to assist in fights.