It's okay....
In detail, here is my review:
Gameplay is fun and unique. I haven't played this game before, but compared to Mario, it has its distinguished control. Also it does not take a long time to learn to play, or at least it is for most gamers, coz everythin is pretty obvious and there are lots of help blocks around the levels. I give 9 for the original gameplay...
Graphics is good. I like the cartoon style. Looks beautiful. Other than that, theres nothing much to say. I give 8 for the graphs.
Sound is awesome. I like the background songs. Not sure why but I never get bored with it, tho I have to repeat the same level many times just to get the perfect score. I give 9 for the sound.
Value... I can say, it worths your money. But if u can get the used one, just get that. For the value, I give 7.
I am an RPGer and so this game is not really going to be my collection. But it's a good alternative when I was fed up with my Final Fantasy III =p