5 stars: Love this game! No annoying ads(only ads are for rewards) premium currency is super easy to earn, the game knows when you need 1 item to upgrade and gives you that item (for a very cheap amount of said premium currency, that again; YOU CAN EARN!) only very minor problem is that there's energy to play, but since the currency is easy to get (and not all modes need energy) it doesn't really matter. Keep up the good work!
5 stars: I love this game but.. every time there's an update I have the synchronising problem that takes a few days to fix. I always end up deleting the game and reinstalling it which causes the game to start over. Then when I finally get my data back I have rewards to collect but can't do that due to a
4 stars: Great game. Super fun and addicting. My only problem is I stopped playing for a little and when I started again I wanted to reset my progress. Start fresh but you can't. You have to make another Google play account and even when you do that it logs you back into your high level account instead of the new one even when you uninstal and reinstall.
4 stars: it's an overall really fun game with great animations etc but maybe one thing the team can try to improve on is the amount of graphics because sometimes there's so many things happening that you cannot see where the enemies bullets are going and you die very quickly (e.g. you have coins on the ground, the element circles, the enemies moving around and the bullets all over the place)...