The Farm Defense

Farms are your supplies. They are a part of your buildings that you have to build, so instead of hiding them in a corner of the map waiting to be discovered, put them on your front lines?

Farms are much less expensive than a 2x2 wall square. They also provide 4 food supplies too. This makes them much better suited for blocking off areas and stopping units from getting through. You can put Archers or Ballistae behind the farms and have them shoot anybody who comes close. To prevent somebody else hitting your farms with Ballista, you should keep 3-6 knights outside the farms. The Knights could run and destroy the danger approaching your village.

Farms could also be used to guard a Cannon Tower. By surrounding the tower with farms, your tower would have at least 400 extra hit points. You could surround any buildings with farms for extra defense if you do not have enough defenders or need to buy time to let troops escape impossible odds.