Good concept - faulty business model
This game is the perfect example of a good concept being destroyed by greediness. I get it, developers have to make a decent living, but frustrating the players with 30 seconds ads that are popping up in every couple of minutes, it just does not work. Developers, please consider the following scenarios: - Update the content regularly, add new game modes, be a little bit innovative, so your customers will be willing to pay for the app just because of the content. - Or if you are not innovative then decrease the length of ads, and most of the people will not delete your app after 2 minutes of gameplay. And with more dedicated players you might be able to make more money than you are making now with 30 sec ads.