Copper

Copper is a resource found underground. It can be mined to obtain copper ore. It is the most common underground resource, before silver, gold and platinum. Copper takes 6 seconds to mine, the same time as wood, stone and plants. Copper can be found anywhere underground, even in dungeons.

Development
Copper was the first metal ore to be added and has been in the game since the first alpha (0.0.1).