Glass Blowing

In the tree

Metallurgy tech tree

Column 4

• Metallurgy tech tree Column 4

Research cost

Red points

45

Green points

10

What it unlocks

Alchemy Flasks I

Furnace I

• Alchemy Flasks I Furnace I

Empty Bottle

Furnace I

• Empty Bottle Furnace I

Research first

Glass

30 red and 10 green tech points

• Glass 30 red and 10 green tech points

Glass Blowing

• All technologies

In the tree

• Metallurgy tech tree Column 4

What it unlocks

• Alchemy Flasks I Furnace I
• Empty Bottle Furnace I

Research first

• Glass 30 red and 10 green tech points