After having a good feel of the game and play it intensively for a week, I'm giving it only 2☆. What's extremely annoying is that a strong Dark Armor always attack your ressource gathering spot when you are offline. Do you really expect us to stay online 24h/24h? And to revive your heroes it cost ressources. So basically you grind for nothing. Forces you to watch ads for extra rewards. And gems are only available with real cash. I would have bought if it's not so damn expensive! Uninstall!