I dont know what has happened to this game. Seems to me it has been given up on. Used to have events to get different characters and skins, but it has gone to a complete stop. In the store you can buy coins for diamonds, but there is absolutely no way to earn these diamonds. When i messaged the devs, the response that i got was "the game is still being developed. As soon as it gets done it will be available" (or something like that) But nothing has changed in the game.