This is a low-frills game that challenges your mind in different ways than the usual Big Fish games. Starts VERY easy, but the highest levels are very difficult to solve with the minimum moves. Challenges pattern recognition, logic and spacial relationships. It's an unusual game, but I'm an unusual person. I could not give up until I solved all the levels! If you enjoy games like Crazy Machines, Gravity, or Magnetic Adventure, you might like this one too.