While I can not say it is a scam just yet as I haven't been able to reach any rewards what I can say is that it is no where near a fast experience. Gems; You need 100k of these to get a reward, once your past 90k it changes the rewards to be under 100 and adds a decimal point. Coins; You need 3mil can't say much about this cause I've only gotten to 1mil. It also takes forever. Levels; You get rewarded a level 300, because of the ads this level could most likely take you months to reach.