I got it in the mail a day or two ago, and just started it after finishing Riddick. It's the PERFECT game to start after Riddick. That was good, but dang it was unrelentingly dark.
This is like the exact opposite, but likewise, it's a good game! In fact it's the best game outside Katamari I've played from Namco in years, so far (I'm at the end of the second World).
I think anyone who enjoys Katamari will probably enjoy this too. It's not identical at all, but it has you eating stuff to get bigger to eat other stuff. I'm sort of foggy on when exactly you get bigger, since I sometimes get bigger without having gone up a level.
But at any rate, it's pleasant and fun.
It even supports the Classic Controller! That's how I'm playing it.