Nice idea for a game but there are too many things that bug me . One, offline mode is broken. Two, you put the arrow button that turns the achievement page right underneath an ad. So you have to try really hard to hit it with a tiny portion of your finger or else the ad banner gets tapped. Third, the screen spinning is annoying because not all the surface is tappable and even when zoomed out I can't seem to tap on some buildings for the 2x multiplier because they get spun offscreen.