Why is it not on PS3 or Xbox One as well?
One of the announcements that came out of Sony’s TGS show this year was Kingdom Hearts HD II.8, a collection which would include the remaster of the Nintendo 3DS exclusive Kingdom hearts 3D: Dream Drop Distance, as well as Kingdom Hearts 0.2, a new episode in the series that would pave the way to the upcoming, long awaited Kingdom Hearts III.
Exactly why such an important part of the series mythos is exclusive to the PlayStation 4 is a question many have asked since this announcement, especially since Kingdom hearts III itself is also due out on the Xbox One, whenever it does launch. In an interview with Japanese magazine Famitsu, Kingdom Hearts director Tetsuya Nomura explained the reason for this PS4 exclusivity.
Since Kingdom Hearts 0.2 is using the technology that will ultimately power Kingdom Hearts III, the game cannot be made available on the PS3, like every other major kingdom Hearts game so far has been- hence the PS4 exclusivity, Nomura explained.
That makes sense, of course. But why not also put it on the Xbox One?