lol..
KH1:Was fun...no cheap way out of things..and if there were indeed such ways (Cure+Repeated ethers/elixers) bosses like Sephiroth and Kurt Ziza saught out to strike you before you can even get one of the two done. Overall, on Proud Mode, it was a challenge..but not much replay value
Chain Of Memories:A little cash cow, to get KH2 done while at the same time, keep the community guessing about KH2. I never did like it, but I did get up to Marluxia. And he was a bit stupid and easy..so..yeah..the replay value comes from Rikus side of the story also.
KH2:Too easy. Even on Proud Mode, reaction commands+Drive=Owned anything. =D They certainly redid the gummi ship, and the bosses. Despite Hades.

And, well, it's just fun to go through the game over and over, dual wielding with Roxas, getting your first Final/Anti form with Sora. It can keep you playing for a while, but still, after you see the secret ending, make Ultima Weapon, aquire Fenfir from Sephiroth, there's nothing really else to do.
So, they're fun, but get boring easily.
