Kingdom Hearts HD 2.8 Final Chapter Prologue (キングダム ハーツ HD 2.8 ファイナル チャプター プロローグ Kingudamu Hātsu HD 2.8 Fainaru Chaputā Purorōgu, stylized Kingdom Hearts HD II.8 Final Chapter Prologue) is a collection of the Kingdom Hearts series, developed and published by Square Enix for the PlayStation 4. A successor to Kingdom Hearts HD 2.5 Remix, it was announced in September 2015 and released in January 2017.
Kingdom Hearts HD 2.8 Final Chapter Prologue includes a high-definition remaster of Kingdom Hearts 3D: Dream Drop Distance, as well as two new pieces of content to the Kingdom Hearts series. The first, Kingdom Hearts χ Back Cover,[a] is a cinematic based on Kingdom Hearts χ that details events not shown in the original game. The other, Kingdom Hearts 0.2: Birth by Sleep – A Fragmentary Passage,[b] is an original game that takes place after the events of Dream Drop Distance, with a majority of the story taking place after the events of Birth by Sleep and during the events of Kingdom Hearts, from the perspective of Aqua. Back Cover and A Fragmentary Passage were the tenth and eleventh installments in the Kingdom Hearts series.