Needs Update to Fix Tower Issue
There is no option to add a tower spot or swap one tower for a different kind, yet there are options for towers according to where you upgrade them with “convenient” in app purchase. There is no place to “buy” or add an extra spot. When you get to the last world you need to change to the drum tower to defeat one of the enemies - it’s impossible otherwise. In other operating systems you are able to add another tower. As it is now, the game is unbeatable after a certain point. Disappointing...
