1. Build siege tower Unique unit (or units)
2. capture cities
3. ????
4. profit
5. Upgrade the siege tower unique unit into artillery
6. enjoy +200% effectiveness vs cities ARTILLERY (kept from siege tower)
7. capture cities
8. ????
9. profit even more...
2. capture cities
3. ????
4. profit
5. Upgrade the siege tower unique unit into artillery
6. enjoy +200% effectiveness vs cities ARTILLERY (kept from siege tower)
7. capture cities
8. ????
9. profit even more...