Like its predecessor, this game requires a combination of logical and observational skills (much like Sudoku does). Not really my type of puzzle, but to be fair it deserves 5 stars for both the concept and the implementation.
There is something wrong with the programming, it got stuck at one point and I got the message "A script in this movie is causing Flash player 9 to run slowly. If you allow this script to continue, your computer may become unresponsive." So I stopped it, and I refreshed the page. This can't be my browser's fault, something is wrong with the game.
One hour time limit practically means no time limit. It should be more like 15 minutes. That way we wouldn't have the "just click all the squares and win" phenomenon (with the penalty system as it is).
You can't copyright the "look and feel" of a game. You can copyright the code itself, but not everything that looks like it. For example, OpenOffice Writer is not infringing Microsoft's copyright for MSOffice Word, even though it's designed to look the same. But if the pictures are exactly the same, then you have a point.
Everyone stop saying it's "stolen". Picross, otherwise known as nonogram or paint-by-numbers, is a public domain concept for a puzzle that was originally meant to be played with pen and paper. It was invented in 1987 in Japan (and not by Nintendo like I read in these comments). It's no more copyrighted than sudoku or crossword.
The gameplay is nice, but the fact that you have to complete 30 levels *in a row* to win makes me not want to play it. One mistake and I have to start over... no thank you very much.