There is a full ad after every level. Levels are not so long that there should be so many ads. If you even try to back out of the ad it takes you to the store or website it's from. Some you can't even just wait you have to interact in order to get the option to close. Got 2 stars because the amount I played was fun so it's sad. I had to watch ads 2x/3x longer then I played the game.