Uh, one thing Nomura the creator of KH said. Dont miss ANY thing about KH if you are playing. since all the game will be confusing, and you wont get anything. specially with BBS. REALLY with bbs, and days get confusing too. i recommend this order. KH1, KHReCoM/CoM, KHII, KHDAYs, KHBBS. that order is the best. everything will fall into place with this order. if you play it with this order, than try KHBBS, KH1, KHReCoM, or Days, KHII thats the storyline, but the first order is like Recommended to do since you will know more.
That game gets inTENSE when you play in the later days.
I played and beat both in English and Japanese.
Imma do the same with BBS. get the Japanese and beat it. then get english version and beat that again, and be like IM PRO. Im a DIEhard kh fan, I even have a tattoo to show how I love the series.