Tips for

• take advantage of the territory: build your towers on the top of hills and place your Catapults there. This will make your Catapults almost invincible

• a good trick to check an area for enemy towers is to try to build a wall or house there. If the wall is gone a second later, you'll know that there is a tower :) and since the cost does not matter, this trick works pretty well.Put your Cataputs on "stand ground" to prevent them from chasing enemies and running into towers.