Engineered to be impossible to beat after level 200 or so without 1. Paying to get bonuses that only last a very limited amount of time and with uncertain effectiveness 2. Playing the level dozens of times until the game automatically generates bonuses/power ups regardless of how well you play, in order to keep you hooked. This completely destroys the gaming experience. In essence, this is gambling but without any potential gains. Look at their terms of service “ A person under 13 years old are not allowed to use the Services. A person between the age of 13 and 18, requires consent of their parents or legal guardians ("Parents") for using Services of the Company.” So this is a “game” for adults. Furthermore, whatever bonuses or other nonsense (collectively “virtual items”) you can buy, you don’t even own them. From their terms of service You have no claim, right, title, proprietary or ownership interest in any of the Virtual Items regardless of any consideration paid for those virtual items. Do not give money to these companies, and don’t let your children interact with their products. Their own terms of service says under 13 not allowed and even 13-18 need legal guardian permission to use their “services”. The sole purpose of this product is to create the illusion that you play a game while in fact the outcome fully depends on the game itself that at sole purpose is to get you hooked and buy their virtual items which you can’t even own.