If you don't mind playing a couple of times a day for short runs then it's fine. The pay wall is ridiculous to make any real progress. Having to acquire resources to beat bosses isn't a terrible idea, but the execution and limitation of it is awful. If the game had a one time fee like Mario Run I would be far more likely to spend the money. Otherwise it's a painfully slow burn. All that being said, on a positive note the game does look pretty good. Otherwise it leaves a lot to be desired.