Research upgradeExtra Gold Storage IV
+ 80,000 gold storage capacity
Research data
- Research branch
- Gold mine
- Unlock requirement
- Gold mine level 5
- Cost rank
- 20
- Wood cost
- 67,500
- Stone cost
- 67,500
- Food cost
- 67,500
- Gold cost
- 27,000
- Iron cost
- 40,500
- Effect
- + 80,000 gold storage capacity
Related game data
Research branch 1
Research cost 5
