This game drives me bananas. I really want to throw my phone across the room. If the upgrades do anything it's unclear and as you move up in levels it just becomes annoyingly difficult. I'm not saying it's impossible it's just ridiculous. I thought maybe the game is just not my thing - but it has all the elements of casual games that I enjoy. The price is low, but if I consider the price of smashing my phone it's way too expensive.