You don't need to be able to construct huge towers or double-walled fortresses in an instant to win matches, but being able to quickly throw up a basic defensive position can definitely help you out of a scrape.
You don't need to be able to construct huge towers or double-walled fortresses in an instant to win matches, but being able to quickly throw up a basic defensive position can definitely help you out of a scrape. Three walls in a U shape with a ramp in the middle will protect you from being shot from in front or the sides, while allowing you to peek over the top and return fire if you can see where your opponent is.