it's okay, does what it advertises, but there are hundreds of games just like this. Pros: + can be played offline (you'll still be bombarded by their offers when you start the game though) + it's free i guess Cons: - the skills you get during runs are not thought through. many are the same with different names, some are pointless, one even actively makes the stage more difficult. I overlooked it at first, but ultimately it's so annoying that I'm uninstalling now.