It's almost never that I give out a review, but here goes. I think I do agree with many that luck might have too much of an influence in this game. More often than not, if I don't see a special pattern to start a level, I immediately restart the level until I DO see such a pattern. However, I can't discount the fact that you had me addicted to this game... until level 81, which is VERY rare for me with these types of puzzle games where there are goals you must meet before advancing. Therefore, I will be giving a 4/5.
When I run into time management games, it's usually "do all these things...... oh wait, there's another thing you have to do and you have no time to do it and you get a massive penalty!!!!!!!!" This game does not do this, and I think it's well made. 5/5!