There's an ad everytime you start a new level of any kind and new updates every month that get removed the next week! It becomes to much and in the newest update you get two ads, why?? That's so unnecessary! And you can't even play without wifi, you're playing alone, you shouldn't need wifi. If there wasnt that many ads it would be much better, it's a very satisfying game and I've spent many, many hours on it (around lvl 7500).