Technology
Branch
Column
Red points
Green points
Blue points
Total points
Unlocks
Reputation
In the tree
Metallurgy tech tree
Column 14
Research cost
Red points
× 160Blue points
× 20
What it unlocks
Clay Molds
Smithy II
Iron Kit II
Smithy II
Smithy II
Building
Research first
Steel Casting
150 red and 20 blue tech points
Leads to
Steel Works
175 red and 20 blue tech points
Lenses
175 red and 20 blue tech points