I thought the game actually got easier towards the end. There were so many bombs that if you clicked on one or two, they would clear up the entire screen. If that doesn't work, just replay the level and try again. It may have been better to localize the effects of the bomb, for example, within a 2 or 3 block radius.

I also suffered the same problem as Casaric. Some treasures were hidden, even with the hint.

the idea here is as solid as a memory game can go...

however, after 30 levels, the 2 biggest drawbacks are:
the amount of 'hints' 'bombs' and 'lightening' on each level makes it way to easy (some of them completing themselves after hitting only a single bomb)
and it really get to be the same thing over and over...

recommendation:
instead of having the hints being part of each level, make it a max of 1 or 2, and cost score to use it at anytime instead (but again, at the cost of 'buying' a map)
also: have a use for the score if you set it as 'dollars' otherwise... be creative!

This is actually a pretty interesting take on standard memory puzzles. The hint blocks make it so that I don't have to cheat or have a photographic memory of every block. Wasn't sure what the green rectangles do though. I didn't finish, but I liked what I saw. Very unique and interesting.

I'm not really a big fan of these types of games, but I think you did all right. I was a little confused as to what to do, as there were no actual directions on how to play the game, but I caught on rather quick. I found that the game would glitch at times, and the treasure would not be where the 'hint' showed it to be, and I would waste all my time clicking random blocks looking for that one last coin, and end up failing the level and having to start over.