There is no way you can skip playing this game once you started playing it. So that why it is always the top grossing app ( game too) on the google play store. The game architect is brilliant, its like fluidic and seamless. It mostly never crashes or has major bugs in it. It’s runs on almost all the smartphones with Google Android as OS.
Its totally free, but costs contineous internet connectivity for the realtime game play. It works fine on 2G connectivity also, so no need for much data expenses.