This game is really good and challenging. As you level up, it gets more challenging, but the levels are winable over time. My issue now is that they have added ads. Not only CAN you watch ads to get more turns, but, even if you don't watch an ad before a round, and you lose the round - you get an AD? And many of the ads are close to a minute long, and then with a pause so you have to wait 5 seconds longer to get back to the game. Have played about 10 rounds in the past 3 days. The ad "system" has ruined the game completely!