It's a classic hero's journey kind of deal wrapped up in a pretty solid action RPG with some weird platforming. The story isn't nearly as insane as it would get in later games (KH basically turning into a vessel for wild anime fights definitely has its own charm, though) and the Disney worlds don't feel nearly as pointless as they do in later games since Sora's experiences in them all help him grow from a kid who kind of fell into wielding the Keyblade into being a real hero. The music is phenomenal as it is for the whole series, and the game struck a pretty okay balance between Final Fantasy influence and being its own thing.