Ive played KH for an hour or two now.
Got to say, if youre getting it for a measly $20 ..This could be the best graphics, sounds, and fun gameplay you can get for that money.
I got mine for $30 on a prepaid order (Trade in) at eb, but I have to say, i wasnt dissapointed at all.
The first thing thats awesome is that Square implemented a cinematic into the game. A bloody cinematic. Probably the first guys to do that..WIth some mentions of possible other cut scenes later on in the game.
The game implements a new combat system that still feels like KH for the ps2, but adds some twists with the card system. Theres some really cool things you can do with the deck implementation..But seriously, it adds a whole new tangent of strategy after a while.
Ive only played 2 hours, but up till now, I can say its real good. The environments are familiar, the sound is bloody great and the tracks from the stages from the original games are remixed in a faithful fashion. And the sprite graphics are some of the best ive seen on the system.
Highly reccomend it..its an excellent buy.