Too many ads
The game is enjoyable enough, but after every level is an ad. Of course I could pay to get rid of them and I suppose that isn't unreasonable. I am giving it one star because a puzzle game should be able to be solved without boosters. The developer gives you one of each as they are introduced, after that you buy or watch ads to get more. The problem with the puzzles is that they can't be solved without a booster. There is no solution within the parameters given. And it's a problem as the hard levels require more than one booster. This is just a blatant money grab that has you watching ad after ad. I don't recommend.