400
15030sAvailable for 1 civilization
Powerful siege engine effective at destroying buildings and walls over a great distance.
ChineseProduced by
The app explains this civilization and unit in plain language, tailored to how you play — get the app to unlock it.
Astronomical Clocktower
Greased Axles: Increase the movement speed of siege engines by +15%.
Geometry: Increase damage of Trebuchets by +20%.
Blacksmith
Military Academy: Increase the production speed of infantry, cavalry, siege, and transport units at buildings by 33%. Does not affect religious units or other support units.
University
Siege Works: New carpentry techniques increase the health of siege units by +20%.
