Better in the mind than in the playing. The puzzles need more evaluation as to difficulty as they seemed reversed (in my case at least). Perhaps i'm just not suited for this. Several larger sized puzzles rated "Easy" i spent ages on and got bored long before i came up with a solution. Conversely, i completed several smaller ones rated medium or hard, on the first attempt. Additionally, in a day and a half, i've had the program hang 3 times. I get a perpetual pinwheel and if i choose "Force Quit" from the dock menu, the app persists. Only on a second "Force Quit" does it go away. Also felt rough around the edges UI-wise; the rotation of pieces being somewhat delayed, causing me to click an extra time, then getting 2 rotations quickly; nothing being particularly definite or snappy; lack of sound; a preference menu item which does nothing; and no real splashy eye candy. | 
