While the game is very fun and addictive, you will be ROBBED if you use your hard earned coins to garner an extra 60 seconds on your present game. SEVERAL times now I paid for extra time only to get only a couple of seconds. I will now uninstall this game. I have simply had it. It's bad enough the ads every 30-45 seconds while the game is going. You get a momentum going and ADS... just hit your head with a hammer. Saves time and you get the same result.