Coin master is a very interesting game but becomes bored after reaching certain levels because the player cannot apply his skills much. 99% of the game activity is all about luck. Moreover, it is very manipulative on the spins, especially when you are spinning on higher bets. That's why many players land up purchasing more spins and coins and withdraw/ uninstall the game when they become fed up. I am sure the game will prosper if some space is provided to the player to apply his intellectual skills to keep him interested no matter how much he buy.