Suguru is a fun challenge, but this one has a lot of levels that are pretty easy if one does a lot of suguru. It looks like about 2/3 of the levels are either 6 x 6 or 7 x 7.
This game is great is you like logic puzzles! I would love to see more games like this. I have one that is similar but a little harder that I play ALL the time. I'm not giving it 5 stars because I find it a bit easier than I like due to some of the hints, but overall, a very enjoyable game!
I love nonograms, and this one is pretty good. The backgrounds are nice, and the contrast between selected squares and the blank squares is very good. However, when a large number of squares are selected correctly, the screen does a bit of a "magic" warp which gets very hard on the eyes after a while. The screen warping is the only reason I can't give this a 5.