Surprisingly good
Updating my review.. I though there were a few glitches but after a certain point the level ups are hard to obtain, which is ok, but it wasn’t very clear and it looked like being stuck. I very much appreciate that it is totally possible to play this game and not spend a dime. You can if you want to speed up leveling up or want to get certain upgrades immediately, BUT it is not frustrating to wait a bit and get those later. Ads are scarce and basically only present when you want to obtain some extra goodies.