I like the game because it takes real skill to play against real players. Offers an even playing field. Easy way to kill time weather it's for 7 min or an hour and half. Or all day if you can manage not to die. However, I had spent months trying to upgrade my worm only to descover that it really doesn't upgrade anything. Considering the money made off the hundreds of ads that I watched to earn coins faster, and the lack of reward for coins spent on a non existent upgrade, I feel quite exploited