The gameplay itself is good, but...it’s basically cheap filler to pile ads in your face like many apps these days. The gameplay is secondary to the advertising.
Nothing kills a game like constant ads. Especially when you’ve paid money for it. Finish a level...AD...close the AD, it switches to the screen where you choose to go to the next level...another AD...close the AD, choose next level, finish the level...AD...repeat.
So for every 15-20 seconds of game, you either have to deal with 2 quick ads or one longer one to move on. Not sure it’s worth it.
I kind of expect things like that from free apps, but I paid money for this one.