Ugh, the runes. You have to only upgrade 20 runes (and no more) to be decent in this game, even paying big money. And you have to swap them, one by one, every freakin painstaking war battle, between 5 heroes. So many taps, each and every hero, and then each and every of the four runes. I just began to dread it and couldn't play anymore. Makes you realize the designers don't really play their own game, or they would have put a 'move all' button in. Pass on this one unless you are spending $0.