Summary: I found it to be a relaxing and low-frustration diversion as an adult, and this would be a great game for kids and teens who want a fun challenge in logical thinking. This fun and fairly easy puzzle game has 80 levels. The difficulty ramp is very gentle. Certain (few) levels are especially fiendish and require clever thinking, especially when there is a scarcity of pieces to work with. Most levels simply require good planning and placement of pieces, with good timing now and again for a slight challenge (only slight, because you can and should pause any time you need to make major shifts to the playing field). In other levels, the design suggests obvious placement of pieces and it feels merely like an exercise to guess where things are meant to fit. As you gain new types of pieces they do not make the puzzles more difficult; instead you get easy tutorial levels to explore each piece. In the home stretch of the game, where you might except the puzzles to be very demanding, I found the game actually became easier because of new, flexible-use pieces. This game's biggest weakness is that the difficulty comes to a plateau fairly early, and rarely rises to higher challenges. I STRONGLY recommend playing for "gold" on all levels (all mice saved, all blue shards collected). I did this, but as a casual player I thought it was still too easy to get 100% of the achievements. I'm reducing its rating because there are still some bugs where the game gets in an unplayable state. Usually I could recover with a few key taps but I had to restart the program twice because of this problem.
