Kingdom Hearts Unchained X mobile game will relaunch under the new title. It's essentially an expansion of the game, most notably adding a multiplayer mode, where up to six players can play missions together. The trailer also shows some new story, introducing a "new" character whose presence completely screws whatever was left of KH timeline. There's also a pre-register campaign where all the players will get a reward depending on how many people sign up. Oh, and along with the title change, the X is no longer pronounced as chi. It's cross now. Don't forget.