Really, really good. And that's an understatement.
Gameplay: It's great and all, but...it's a little too repetitive. I would've given it a 7 or 8, if it hadn't been for Drives and Reaction Commands.
Graphics: Pretty standard PS2 graphics, but a level up from Kingdom Hearts, of course. The CGI movie sequences are beautiful and looks real, but it makes Sora look girly, as usual. Oh, and Sora doesn't look like a girl in game.
Sound: CD-Quality sound, catchy background music, awesome songs, things you just wanna download illegally (and I suggest you not, I mean, you wanna support them, right?) and record, very good music! Especially Utada Hikaru's new song, Sanctuary. I personally like the Japanese version better. More tune. Still awesome.
Value: Great, you'll play it over and over again, and beating up all the FF characters in the Hades Paradox Cups will be really fun, and you'll always want to try to reach for the following goals:
Beat and Get every single tournament in the Underdrome
Get every single Keyblade, including Fenrir and the Ultima Weapon
Defeat Sephiroth
Get to Level 99
And complete Jiminy's Journal.
Tilt: I think it's great, I've played it for a whole 1/2 of 5 months, and it's still great! Needs more bosses, though. Harder ones. Challenging ones. Stuff that'll make you scream and curse at your TV. Difficulty: It's just right, but that's my opinion. You're given three choices into what kind of difficulty you want. You can get beginner, which is for, um, beginners, Standard which is for experienced players, and Proud is for the big boys. Think you can handle it?
Learning Curve: 30 to 60 minutes should do it, what with the long introduction to controls. Overall, you'll have a pretty easy time controlling everything, learning how to use Reaction Commands easier, and how to scroll in between Action Menus while still dodging hits that could easily kill you.
Classification? 9.3, superb, and it deserves every bit of it. Though I think it needs more bosses.