Addicting at first but ultimately a cash grab. My champions were strong starting out but the further I progressed it became impossible to win without retrying many many times. Normally you'd solve this problem by just grinding and leveling up your people but you can't grind enough before it gets to where you need to pay. Sucks because I do like the concept of this game and there aren't many mobile games I can say that about. I get that you have to make money, but paying to progress? Really? Dumb