Massive amounts of ads after every level and if you have to replay a level. I expect ads to help developers to pay for the game. However, this game is way beyond reasonable. Also, over 3,000 levels are promised. I am on the last section. There are a total of 1500 levels. Worse, they aren’t that hard at all. I have only kept playing to see if the levels would get harder. They haven’t. I cannot recommend this game.