Rewards are too little if you're not watching an ad, speaking of ads, the game eats a lot of ram if you want to watch an ad in the first place, and half of the time, even if you watch an ad, sometimes you won't even get the "bonus reward", buildings, upgrades and everything else is too expensive, and making the statistics a "Pro Player" feature is stupid, because for the most part, it's just a cash grab membership. So don't even play this game, sure fun, but only the first hour, tl:dr bad game