These levels are impossible to pass unless you have gold bars. I sometimes get stuck for days on one of these levels. I usually have opportunities to get boosters by watching ads. I am on level 15,790. When I ran out of gold bars about a week ago, I had a nightmare levels that took me 3 days to get through it. Then after just 2 levels again I had a nightmare level, 3 more days to get through it. The normal boosters that I usually are offered, were not available, I had limited ads offered and I am out of gold bars, the only way to get them is to pass levels, which are literally impossible. I move on, after only 2 levels, I get another nightmare level. I have no gold bars, few boosters and I I am stuck again, frustrated. Withoit So in the 7 levels, 3 levels were nightmare, impossible to pass without boosters and gold bars. It SUCKS!