It was Ok in the beginning, BUT then you start to earn less coins and then you have to SPEND MONEY to buy the gems to buy more coins to upgrade the doctors and equipment. If you guys want to improve the game make it where you earn a bit more coins to make the level a bit more possible. Understand need to make money, but if we're spending too much $$ on a game and not making enough coins soon it won't be worth it. I'm basically going uninstall the game cause I'm losing interest.