Kingdom Hearts HD 2.8 Final Chapter Prologue (2017)

Kingdom Hearts Dream Drop Distance HD
The collection features an HD remaster of Dream Drop Distance, which Nomura stated was essentially a full remake of the game, since the original utilized the two screens of the Nintendo 3DS.

Kingdom Hearts χ Back Cover
Further information: Kingdom Hearts χ
Kingdom Hearts χ Back Cover, told through HD cinematics, tells a new tale of the Foretellers and reveal new parts of the series' history. Nomura revealed that Back Cover would utilize technology being developed for Kingdom Hearts III.

Kingdom Hearts 0.2: Birth by Sleep-A Fragmentary Passage
Further information: Kingdom Hearts Birth by Sleep
Kingdom Hearts 0.2: Birth by Sleep–A Fragmentary Passage is a new, short episode taking place after the events of the original Birth by Sleep, told from the perspective of Aqua. A Fragmentary Passage, which ties into Kingdom Hearts III and uses technology from III, is set immediately after Dream Drop Dist... развернуть