Keep updating the game so I have to rewrite again.
Pros: there are multiple heroes to collect; some depth to team building; events; factions to join, and the game's pretty addicting when you can actually play. Not to mention it looks charming... now here are the negatives.
First of all, the reward system. Jesus Christ, the four slot chest limit and delays are atrocious. You need to wait at least 45 minutes to open the smallest reward. The maximum time is a whopping 22 hours, yes 22 HOURS. Nobody besides children have that much free time. When you fill up the 4 slots, you can no longer loot chests after clearing runs(you'll lose a lot if you keep playing). This gimmick halts players from making progress despite having max energy. Not only will this frustrate players but hurt the game.
Second, the extreme difficulty to procure resources and heroes. In order to evolve heroes, you must collect necessary evo materials(which is fine) and sacrifice heroes that are parallel to its rarity. For ex: [3 star to 4 star] = [x3 three star heroes] which means [4 star to 5 star] = [x4 four star heroes]. It's insane, a bone grating grind that mostly ends in vague. The drops from dungeons are extremely low btw. The most effective way is to spend gems to buy heroes and materials... yes, generic p2w system.
Lastly, it's anti free to play. Sure, you can spend 2-3 weeks(probably a month realistically) to max a hero's level, or evolve one(2-6 stars) but no one rational would have time for that nonsense. This is probably to encourage players to spend large sums of cash to keep up.
What I'm suggesting is to tone down the unnecessary grind. Remove the wait system, or at least ease it by half or even 3/4 of it. People will still use micro-transactions regardless. I know this is a fairly new game but it's in need of serious help. I'm being pretty harsh about my criticism because it has high potential. There're numeral factors that holds this game back. In other words, you devs are smart(sarcasm) and greedy. Your response to the chest complaints is pay $15 to unlock two(?) ah FFS. You do realize you're making people pay to chance right? At least I can win real items at a casino.
One more thing, the game spikes in frame rate for iPhone 5-6 users and crashes frequently. Not only that, it consumes your battery faster than any game... Do not ignore and do something about it. I mean, I have apps that run unreal engine without a problem.
Download at your risk. It's already too late for me.