To put it simply this is Kingdom Hearts' first ever HD collection. They have "remade" one game and released Director Cuts of three others but this is the FIRST collection.
Eh, I'm just glad they are re-releasing it, I've wanted to replay the original for awhile. Plus this way people who have never played it can try it which could give KHIII a better chance.
If you mean RE:Chain of Memories it's not the same at all. It was an enhanced version for a new system. This is two games in HD along with Days made into basically a movie.
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