The Guard Tower was a unit unlocked after researching the Engineering technology. It costed 20 stars to build, and although it was a building, it was in every other way considered a unit. The Guard Tower could only be built on empty field tiles. It was scrapped in the "Power" beta due to logistics issues.
|Warrior, Rider, Archer, Swordsman, Catapult, Knight, Defender, Giant, Boat, Ship, Battleship, Mind Bender, Amphibian, Tridention, Crab, Nature Bunny, Scout (removed), Guard Tower (removed)|