This game is really fun. With loads of areas that look different every game, and awesome items and powers, explore the bowels of a mysterious castle while fighting a wide variety of creative enemies. There are many different interactive environments for you to explore, as a semi- customizable character, while you collect cells to buy things to help you progress.
The more you play the better and longer each game becomes. The learning curve took me a few days of playing, or about 8 hours before I truly understood it, but it's so worth it once you get past it.