First few days it was smooth but after that I was starting to run out of material to use. Heroes requirements for battle is way too much just to keep going in one spot. The hero level can be limited by the castle if it's not high level enough. Worst part is that the game DRAINS my battery very quickly for absolutely no reason and even overheats. In conclusion: boring, repetitive and unfair. Literally no guide to any of the systems.

Pay to win, but can still be enjoyable. There are events that you cannot complete without spending, most others are very difficult to win without spending even if you play 16 hours a day. Most items (e.g. Relics) that allow you to compete are only available through purchases. I have played with friends for six months. It is not a free to play friendly game. It is the people playing that make it enjoyable. The only competitive players in our guild spend over $400/month.

The game inherently forces you to buy upgrades in order to proceed. Battles are always lopsided, where your group of six battles their eight. They're constantly change the rules, where you're disadvantaged, but they gain! You're always hitting walls in battles that you cannot overcome, as they try to sell you upgrades. Not worth playing, unless you want to be frustrated!