Name: Defense Heroes Premium: Defender War Tower Defense
Free purchases with real money:
Go to the store and select the product of interest;
Click on the buy button (the price should be written on it, if not, start the game with the Internet and go to your phone settings in your Google account, if it is not there);
After the window with a payment error appears (it should be written This version of the application does not support work with the payment system) close it;
The item has been successfully purchased.