Soon after the announcement that the Kingdom Hearts series is coming to PC through an Epic Games Store exclusivity deal, Square Enix on Twitter shared a new message from series producer Ichiro Hazama. He most notably explained why Square Enix decided to go with Epic Games Store.Long story short, Square Enix started using the Unreal Engine for the Kingdom Hearts series starting Kingdom Hearts HD 2.8 Final Chapter Prologue, the very short game with Aqua as its protagonist. Seeing Unreal Engine is a property of Epic, it looks like Kingdom Hearts will be staying on the Epic Games Store for now. And it looks like Epic Games has been heavily involved with the making of these PC ports overall.

It's also interesting to note the announcement tweet stated this is a "long-term partnership" between Epic and the Kingdom Hearts series.

These reasons explain why Kingdom Hearts is an Epic Games Store exclusivity. Many Epic Game Store exclusives in the past turned out to be temporary exclusives who later launched on Steam. But for now, it seems PC players will have to stick with Epic Games Store if they want KH on PC. We're unlikely to see Kingdom Hearts on Steam, GOG, DMM, or anywhere else anytime soon.

Square Enix will launch all of the series on March 30. With Kingdom Hearts HD 1.5+2.5 ReMIX. Kingdom Hearts HD 2.8 Final Chapter Prologue. Kingdom Hearts III + Remind DLC. And Kingdom Hearts Melody of Memory,

Kingdom Hearts director Tetsuya Nomura has been teasing new developments since the announcement of Melody of Memory in June 2020.

Tetsuya Nomura also teased a possible PS5, Xbox Series X Kingdom Hearts game and how it would be a “very surprising ”game. Nomura also teased developments for the series' 20th anniversary in 2022.

Lastly, Tetsuya Nomura recently shared new development stories regarding Kingdom Hearts during the PS3/PS Vita era.

Super Smash Bros Ultimate modders also brought Sora into the game.