After having the game for a 2 months. It take to long to upgrade stuff. Its a bummer that you cant use spells when your you upgrade your spell factory. Walls are too expensive. I understand the concept of upgrades, but there are so many things needing to level up that they need to make it a little less time consuming and expensive. I play it, its fun, but its not the best thing out there. And also we cant use our heros at a time of upgarding the heros.