It was a great game and addicting until a recent update. I was able to watch ads to double coins when I failed levels. I could improve hospitals at a steady pace, playing some levels 3-10 times. It was a good challenge. Now, they've SIGNIFICANTLY reduced the coins you get when you fail, even to watch ads and double them. It takes 30 attempts or more to pass certain levels b/c you can't upgrade and keep pace. It's frustratingly hard now and not enjoyable! The fail coins % should be 20-30, not 10!