This was very good. It's got a few levels I hated (my least favorite being Explodatorium), but it also manages the impressive feat of having both a water level and a slippery ice level that didn't make me miserable. It's also got some great bosses, a good soundtrack, and a story which I found really charming. A nice twist on the old "save the princess" plot. Not to mention it's got a perfect length. Took me just over 7 hours. I'd recommend this to anybody.