Research upgradeSteel Tools
+ 100% iron production (Equipment Multiplier)
Research data
- Research branch
- Iron mine
- Unlock requirement
- Iron mine level 4 · Blacksmith level 4
- Cost rank
- 17
- Wood cost
- 20,000
- Food cost
- 20,000
- Gold cost
- 8,000
- Iron cost
- 32,000
- Effect
- + 100% iron production (Equipment Multiplier)
Related game data
Research branch 1
Research cost 4
