One of the most shameless "pay to win" exploits on the play store. "Hidden" becomes "invisible" and impossible to find (in the time limit) which is designed to make you purchase devices that reveal the items. Uninstalled. Edit: And their response to my comment is a lie. I stated "pay to win" and when the game is designed to put you in a position whereby if you don't purchase boosts then you don't progress, that's EXACTLY what that is. Their defence is even more shameless.