Are walls important in Clash of Clans? They help to slow down enemies. Very useful to those ground troops except hog rider which has the ability to jump over wall. But useless against flying units like minion, dragon and balloon. And worthless when jump spell is used. So are walls still important? Yes, at least for me. Therefore, I always upgrade walls to maximum level during each town hall. So several wall breakers are needed in order to break into the defenses. And high level of walls will scare others away from attacking you too.