Fortress Base

Fortress bases are slightly different from the other base types because they don't add significant amounts to your game. Their sole purpose is to protect your fleet when you are away from keyboard.

Bear in mind that the key to fortress bases are Command Centres. The more you have the better. With 15 CC's people will think twice before they attack, so build 20.

You will start with a 3 metal rating moon or planet.

[metal]x4
[metal robot shipyard]x7
[metal robot shipyard nanite]x4

You should have at this point:
Metal 15
robot 11
shipyard 11
Nanite 4

Build 8 CCs
Build lvl 3 photon
[metal robot shipyard nanite]x2
[metal robot shipyard nanite android]x3

you should have at this point:
Metal 20
robot 16
shipyard 16
Nanite 9 (5)
Android 3

Build 7 CCs
Build 3 disruptors

--Free accounts stop here and try and get your P defences up ASAP

[metal robot shipyard nanite android]x4
[metal robot shipyard orbital shipyard nanite android]x1

you should have at this point:
Metal 25
robot 21
shipyard 20
orbital shipyard 1
Command Centers 15
Nanite 14
Android 8

Start building Planetary defences and Jumpgates.

Remember, Command Centres are key. Also you will want at least 4 levels of Planetary Rings, 4 Levels of Planetary Shields, 4 levels of Disruptor Turrets. 3 or 4 levels of Ion Turret wouldn't hurt either.

Once you have all of the above then build some Spaceports and Eco Centres. If you have space.