Kingdom Hearts: Birth by Sleep – Must Play
Kingdom Hearts: Birth by Sleep is a prequel set before the original Kingdom Hearts game, providing the origins of some of the series’ most important characters. The main story pieces of Birth by Sleep are the origins of Sora, the series’ main hero, as well as his connection to Roxas and Xehanort, its main villain. The game was originally released for the PSP; however, an updated version of the game is included in the HD 1.5 + 2.5 ReMix collection.
The game follows Keyblade apprentices Terra, Aqua, and Ventus as they battle Unversed across different Disney worlds. Birth by Sleep is one of Kingdom Hearts’ most important side games, laying down a ton of foundational work for the rest of the series. As mentioned earlier, the entire game is included in the HD 1.5 + 2.5 ReMix collection and the All-in-One collection. This does not include Kingdom Hearts 0.2: Birth by Sleep – A Fragmentary Passage, which is a short story expansion from Birth by Sleep, sharing additional details about Aqua. This short game, which is included in the Kingdom Hearts HD 2.8 Final Chapter Prologue collection, is related to Kingdom Hearts 3, but is not necessary for your understanding of the plot.