I'm not very good at puzzle games, but this was a great concept! Very polished, and lots of levels. My brain got fried after world 2, but I enjoyed the first two sets of levels. I like the sound effects when you move pieces around the board - very satisfying. I also think it's great that you have to move pieces around on the main screen to get to the other worlds. Very clever. I've never seen this concept before, and I think it was well executed! Could maybe do with some relaxing background music, but I understand (I didn't have music for my entry either heh).