Research upgradeExtra Iron Storage III
+ 50,000 iron storage capacity
Research data
- Research branch
- Iron mine
- Unlock requirement
- Iron mine level 3
- Cost rank
- 15
- Wood cost
- 8,750
- Stone cost
- 8,750
- Food cost
- 8,750
- Gold cost
- 3,500
- Iron cost
- 5,250
- Effect
- + 50,000 iron storage capacity
Related game data
Research branch 1
Research cost 5
