Structures

Guard Towers-Guard Towers make a reappearance, but have been changed alot. Mainly used on the border of your base, Guard Towers not only extend your vision into the battlefield, but also can be equipped with a variety of weapons. They include a Vulcan Cannon (the number 1 infantry killer), a RPGL (Rocket Propelled Grenade Launcher), and SAMLs (Surface to Air Missile Launchers).

Com Center-As always, the Com Center gives Radar coverage and is one of the first things you should build (after your base has some protection). But, like everything else in TS, there are a few more options (yet never "Surrender"). The Threat Assesment Targeter picks the biggest threat within range and directs all automatic defense fire in that direction. The Ion Control Center gives you the ability to use the Ion Cannon (like the one from C&C). The Hunter-Seeker Control Center lets you attach a unit to enemy units, allowing you to see what they see.

Fire Storm Defense System-The Fire Storm is a large Force Field that, when hit, transfers that damage to the generator attached to it. They can be overloaded, but this is still the ultimate way of protecting your base.

Obelisk-These things take up alot of power. That is both a good thing and a bad thing. The bad side is that nobody is dumb enough to go near one of these, so they'll destroy your power supply. The good side is that you can place a few Obelisks near your power plants (or hey--surround your base with them!). A truly awesome weapon.

Stealth Generator-This genorator turn every unit and structure in range invisible. Unfortunatly, if your opponent gets close with a Deployable Sensor Array or you get caught in an Ion Storm, you are visible.

Missile Silo-The Missile Silo makes a return with an upgrade. You can use several types of missiles. You can use the Cluster Missle (upon firing breaks into 10 smaller missiles) or the Bio-missile, which releases deadly biological growth in your enemies base. Wanna teach someone a lesson in multiplayer? Use one of these to keep him busy.