This rating is due to constant failure of developers to remove cheats. Game lags not experienced on any other game makes it difficult to merge at times as well as upgrades to take effect. This doesn't seem to affect other player at all. Also quests can not be completed because no ads available is common. The removal of traditional co-op was a joke and current set up provides no challenge. I have stopped spending on this game for about 3 seasons now and have not seen any reduction in benefit.