Quote Originally Posted by The Summoner of Leviathan
It is not a must play. It just connects the events between KH I and KH II. Sure you are introduced to the Organization and such, but I believe there is not much going on plot wise. Anyways if anyone who did not play CoM they can always go and read the summary in Wikipedia or something.

I played CoM and I am at Atlantica now, I think I have like one or two more worlds left to beat as Sora. I have no experienced much for plot elements though, besides that which fuels the game, but nothing too significant for the overall feel of the series.

*Minor KH CoM spoilers!*


The really dramatic parts start when you've finished all KH's worlds and start to enter worlds like Destiny Islands and the Twilight Town. Then the story really starts to develop quickly, and it gets very touching (And the bosses get annoyingly hard.) all the way until Sora's quest ends. As for Riku's quest, I still haven't finished that one, but it seems to be pretty good. Disney worlds won't really have stories in his quest (you'll just go through them and beat bosses), but the events between each floor seem to develop his character quite well.