A simple and good game, ruined by greedy amount of ads. There are already ads when you offered to multiply coins, upgrade houses, get puzzles, do gachas, retrying challenges, etc. Why would you still add ads after every freaking level?. Imagine failed doing challenge, got an ads, and still need to watch another to retry. Again, simple game worth 5 star, -4 stars for the greedy ads that turn the game into garbage.