Very intelligent puzzle game.
It seems childish at first sight but it's incredibly hard and requires a lot of concentration.
Keeping everything minimal was a good idea, it avoids distractions.
This game is best played in many short sessions as long ones tend to make your head hurt.
Many times, the snap-fit of the pieces doesn't work correctly and I have to drag it into place again from the bottom. I know it doesn't seem like a huge problem but considering you have to make a hundred moves in a puzzle, it is.
The puzzle packs were oddly arranged. The nature pack was more difficult than heroes and the transport pack was the easiest of all. The patterns pack however was insanely hard. I had to use external help for that.
Once you use a hint for a level and then return to the menu without solving it, the hint is not restored.
The half-solution isn't saved either.
All in all, a great puzzle game that will require all your brain power.
I hope to see more packs soon.