|Available in||Stronghold games|
|Cost||100 wood, 300 gold|
This engine is a huge crossbow, which hurls arrows at enemies and buildings. Coming with its own tower, the ballista has a very long range. Arrows from the ballista cause great damage to siege engines, with little impact on buildings and units. The machine winds up and fires by itself: it requires no crew to operate.
The ballista is the main defense tool against siege equipment. They outrange every engine and they bolster a considerably high fire rate. As a result, most siege machines are destroyed after only a few hits. Their arrows are ineffective against units.
Surprisingly, ballistae can also be used to destroy buildings. This is a cheap but time-consuming process, as arrows cause very small damage on buildings.