The game is apparently designed completely out to make money.
On the one hand you will find the typical micro-transactions, through which you can get either more players or more energy for matches (properly you only have a limited number of matches that you can play, then you have to wait for each subsequent match for 20 minutes similarly like Candy Crush).
Micro transactions are now almost normal in games apps, but this is really disappointed me, that information is displayed on these even advertisements in the game, which in my opinion is too much of a good.
Accordingly, I will give only two stars.