All of them were important to play. And I do agree that Square did a poor job with this over the years. The one good thing is that they finally made a collection which has all of the games on them, some turned into movies. but then you also have KH3 coming to Xbox and they aren't even getting a collection so it's still poor. Square is really dumb with their handling of KH.Like the person above you said. I don't even understand which ones were actually important to play. And that's on Square. It's their marketing teams job to make sense and present it properly. Also having multiple titles, exclusive at the time. To varying platforms. But thing in to the same plot, is just bonkers. I'd venture to guess most KH players are like me. Played the first, maybe the second (because hey KH2). Then got completely lost in Squares flow chart of insantiy lol.