It's hard to rate this as a game because it isn't designed to be one. It's not designed to be fun, it's designed to be frustrating and addictive to force you to pay as much money as possible in small amounts. I've never seen a more predatory game. Levels are designed to need boosters you pay for, after every level won or lose you are prompted to buy something. Bright colorful "last chance offer" banners cut in every few seconds. This is dirty design, steer your kids clear.