Fun game, but..,
The game is fun, but when you get to level 60 the boss is next to impossible without a tremendous amount of upgrades, would be better with a smoother level of increase in difficulty. If you watch YouTube primers on the level you pretty much have to have master levels of progression. For a game with 300+ levels, you have to go back and play different levels hundreds of times to get enough gold, or buy the add-on’s. Still fun though, but tiring because of the above mentioned.