Artifact

Deep in the kryptonite pits the excavators sometimes hit artifacts. Nobody knows where they come from. Valuable they are all the same.

Where from

• Kryptonite mine: rare, the more it produces, the sooner
• Mesas: some carry an artifact as a fixed find or as a chance

Artifacts are not sold in the shop.

What for

• research lab levels 2 and 3
• blast furnace level 4
• districts 4, 6, 8 and from the tenth on (District Prices)