Research upgrade

Improved Steel Tools

+ 100% gold production (Equipment Multiplier)

Embedded later-game data

+ 100% gold production (Equipment Multiplier)

Research data

Research branch: Gold mine
Unlock requirement: Gold mine level 6 · Blacksmith level 5
Cost rank: 0
Effect: + 100% gold production (Equipment Multiplier)

Related game data

Research branch 1

Gold mineBuilding progression