A short sequel to Kingdom Hearts: Birth By Sleep that partially takes place during the events of the first Kingdom Hearts, A fragmentary passage gets its name from a hidden ending to BBS and tells the story of Master Aqua's ten-year journey through the Realm of Darkness. 0.2 acts as a prologue to the upcoming Kingdom Hearts III, and also as a demo of Kingdom Hearts traversal, combat, and graphics in Unreal Engine 4 as it will appear in KH3. This game is only playable as part of the collection Kingdom Hearts 2.8: Final Chapter Prologue.