Helepolis
Age: Iron
Prerequisites: Build Town Center, build Barracks, build Archery Range, build Siege Workshop, research Craftsmanship, upgrade to Helepolis.Upgrade cost: 1500 food, 1000 woodCost: 100 wood, 80 gold
Hit points: 55 Attack: 40 Armor: – Range: 10 Speed: Slow
Special: Fire rate once/1.5 seconds; minimum range 3.
Upgrade of: Ballista
Build at: Siege Workshop

The Helepolis has more range and a faster fire rate than the Ballista. You must research Craftsmanship before you can upgrade to the Helepolis. Other siege weapons include the Catapult and Heavy Catapult. The Helepolis is used to attack military units, buildings, towers, and walls.Researching Alchemy increases attack strength. Ballistics increases accuracy. Engineering increases range.