 Disney Interactive was forced to delay a western localization of the game when the game's publisher Playdom, a social game network owned by Disney, was shut down. Despite this, planning continued for a western release with playtesting taking place to improve upon the game before launch. The western localization was revealed to the public with the title Kingdom Hearts Unchained X at the 2015 Electronic Entertainment Expo. Unchained χ was released in Japan on September 3, 2015, in North America on April 7, 2016, and in Europe on June 16, 2016.
