This game looked good from the ads I saw. But you can make so little progress before running out of energy it's not worth it. Basically you can play for about 5 minutes at a time and you have to put it down because you are out of energy, or the icons you tap to produce items to merge need a "recharge time". If you don't want to wait the hours for recharge time, you can speed it up for gems. That you buy. This is the ultimate pay to play game. It's literally the only way to play nearly at all.