New buildings:
-Defence Tower-tower with light gun, now its available in the begin of the game.
-Pill box- very hard defence building with heavy gun.
-Heavy tower-tower with heavy gun, higher than billbox, so it can shoot over the pillbox.
-Triple heavy tower in ED and UCS have one heavy gun and 2 light, can destroy heavy units, and a lot of light units.
-Artillery nest - long range cannon destroys detected buildings and units.
Futures:
-antycruiser gun or building.
-AI which builds more than one base.
