Fun game mechanics but the ads are borderline abusive. Extra resources, opening a new tile, you have been gathering too long, or you upgrade a weapon you get an ad. I believe I saw 10 ads within the first 20 minutes of play. It is just bad. I would rather pay for a full version of the game without the ads. I don't want to pay for a no more ads option that still shoves down extra resource ads still. It's just bad.