There are 12 cat puzzles, each is 3x3. When you choose one, there's an animation of yellow stars. It's possible to see stars for two at once! On the puzzle screen the 9 pieces are in a pile and each piece has only 2 spots it can go - where it belongs on the puzzle grid and it's spot in the pile! It springs back to the pile, covering the other pieces. Just one piece behaves in the way you would expect - the top right corner, but it may not be the top piece in the pile. That piece will stay put wherever you put it. It's possible to move more than one piece at a time. When the last piece is played, the puzzle lines disappear and balloons float up. Then page 1 of the puzzle list appears, possibly after a pop-up ad. The ad bar is continually at the bottom. At top right is the control for music on/off. There is no "click", just music. It's an easy game. Your place is not saved; going back to a puzzle it starts again from the beginning.My granddaughter, age 3, likes the game very well, and always got the top right piece correctly so she never noticed its oddity. She enjoyed the balloons and added clapping hands to the applause. The music has no choice of tune, and she turned it off and on several times. After all 12 were done, and several were done twice, boredom crept in and she agreed to go to bed. I feel this game was helping her recognize corners and edges. I helped only a little, and much of that was recovering from ads.