Fun, but you get ads about every 60 seconds or so. Really disrupts the game. And, the ad-free option to pay to play without ads is not clear if it is a permanent ad free option or if if it expires after so much time. This is a game I am willing to buy if I can just play without the ads. So, if the ad-free is actually permanent, I'd do it. If not, I might delete even though I really enjoy playing.