This is one of the best games I've ever played on a phone. But I'm disappointed because I have played for months trying to complete the mecha sharkjira quests and I did, only to find out I still have to pay for it in pearls. Secondly I think the amount of pearls apex sharks cost is too much. That or the the reward from extinction is to little. Fixing these things will make the game the best it can be. Thank you