I think too often I will play a game only for a person to build walls around their base and build towers and fortresses around each corner. This person feels that they are keeping the enemy out of their base, in reality they are setting limits to where they will go… thus giving the opponent control of the entire map with no cost involved.
It happens time and time again, I will be moving my units along and suddenly my opponent will be erected a lot of fortresses. By the time he has them all up… I have advanced to Age IV and am knocking them all down with Stone Throwers.
In order to invest in early stationary defense you have to very quickly Age up to Age 3. If you are doing this as fast as possible it means you will not have as many harvesters as your opponent. Consider it is 20 seconds for each harvester. Age 2 costs 30 seconds, Age 3 costs 60 seconds, and Age 4 costs 90 seconds. By aging up you will have 9 less harvesters plus whatever harvesters you have cut to try and get that ultra fast age up.
I’m not saying that aging up is bad, I’m simply stating that it is not a good defensive tactic.
Instead think of fortresses and towers as zoning. Wherever you build your fortress is an area the enemy ought to avoid.
In this regard early defense means having an army. If you spot your opponent building up an army while you are trying to Age up, shift all your workers to wood production until you have 200 wood, build a barracks and start making units as soon as possible.
Even if you are outnumbered it will not matter. Your small group of units will be able to protect your harvesters and your Town Hall will be doing a lot of early damage.
I think one of the odd thing s about Age of Empires Online is that defense is only really available later in the game, and by later in the game they get worse. By the end of the game I’d suggest building defenses to slow down the enemy from taking out important structures.
In truth by the time you build a fortress you might want to even build units from the fortress.
Having said that defensive structures are not terrible, they’re just limited.
A lot of people think about walling themselves off and building defensive structures. In reality a person should be thinking completely opposite of that tactic.
You should not think “how can I wall myself off” you should think “how should I wall my enemy off.”
The goal is not to prevent an enemy from attacking your base, the goal ought to be to use barriers to maintain control of sections of the map. On certain maps it can be seen as advantageous to actually build a wall around your opponent and strategically place towers in certain places, that is of course if your opponent lets you get away with this clever proxy play.
In the end it should be emphasized that Age of Empires Online is not a game that can really be played defensively, it is one in which you are expected to bring the fight to the enemy.