The thought of this game is cool but needs lots of work. It does cost a lot to continue playing and they are pushy trying to make you spend more around every corner, w/annoying pop-ups, doesn't want to make you play or just stick around and browse. You get the feeling of just wanting to close the app. Also, once you advance/unlock a higher tier, you no longer can play lower levels anymore. I liked a lot of the choices at the lower tier, not fair. Higher tiers seem to cost more too.