This game takes no skill. It's all by chance what you get on the field as well as you merging units. The co op is fun but you needs keys so twice a day. Expensive to upgrade expensive to buy chests with gems you hardly get. Buying emojis and avatar frames is pointless and expensive 290 gems for an emoji is crazy. Plus the file size is massive 1.5 gb. It was fun while it lasted. 6 weeks.