- Square Enix releases 3.0 version of Kingdom Hearts Union χ
- Update includes new community rooms and Kingdom Hearts III's Classic Kingdom.
This week marks the third anniversary of the release of Kingdom Hearts Unchained χ. To celebrate, Square Enix released an update to the series' first mobile app, since rebranded as Kingdom Hearts Union χ. The 3.0 version of the mobile game introduces a new feature called "X3", pronounced "χ-tres". This new feature contains two major additions: a new communication system, and Kingdom Hearts III's new Classic Kingdom minigame.