Build Limit is important, because would you like to play a game where poeple build so much buildings their base is Impenitrible. That's why the makers, most likely, put that in. Build Limit limits the amount of buildings you can build to 36 buildings per team. Making 64 maximum per game. Having 36 players per team that's 2 buildings per player. If the team reaches thier build limit, the term of this is that they clogged the build limit.