Please note that some information on this wiki is still based on the demo version.
If you notice any errors, feel free to correct them.
Ingot
From Super Fantasy Kingdom Official Wiki
Ingot is a Resource in Super Fantasy Kingdom used to acquire and upgrade Buildings and Heroes.
Crafting
Ingots can be crafted by using 
Ore in the 
Smelter when a Worker is assigned.
Building
The following Buildings need Ingots to be built.
Elemental Tower- Develop
Gold Vein so workers can mine Ore there
Upgrading
Ingots can be used to upgrade the following Buildings
Castle upgrade storage capacity to Tier 3 (32 Resources)- Gold Vein Upgrade to build minecart tracks to the
Goldmine 
Stone Vein Upgrades to build minecart tracks to the 
Quarry
Heroes
Summonable Heroes require Ingots to be upgraded.
Source
Depletable
