The hardest game I have ever tried. Game crashes all the time. I just hit a paywall, no way to upgarde heroes anymore. No blitz function for grinding rss and glyphs. You have to spend a lot just to make a legendary hero 6 stars. Oh, and to get legendary hero? I dont know. Spent around 50 advance summons and no legendary hero. May 500 advance summons? LOL. This game is off to a very bad and greedy start. Uninstalled