Game reference

Tech tree

Metallurgy tech tree: Branch summary: Technologies — 45; Research rules: Research branches — 5.

Tech tree

Search tree nodes

47 matching nodes

Scroll the diagram to explore. Select a node to read its requirements and unlocks.

Node list 47

Bronze Works

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Tier 1

Unlocks: Bronze Nails
Unlocks: Wooden Anvil
Red tech points: 5
Position: Column 1
Effect: Unlocks Bronze Nails and Wooden Anvil.
Cost: 5 Red tech points

Unlocks

Bronze Melting

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Tier 2

Unlocks: Bronze Ingot
Unlocks: Bronze Nails
Unlocks: Furnace I
Unlocks: Firewood shed I
Red tech points: 10
Position: Column 2
Effect: Unlocks Bronze Ingot, Bronze Nails, Furnace I and Firewood shed I.
Cost: 10 Red tech points
Requirement: Requires : Bronze Works

Requires

Unlocks

Bronze Craft

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Tier 3

Unlocks: Bronze Detail
Unlocks: Hardening Bucket
Red tech points: 30
Position: Column 3
Effect: Unlocks Bronze Detail and Hardening Bucket.
Cost: 30 Red tech points
Requirement: Requires : Bronze Melting

Requires

Unlocks

Glass

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Tier 3

Unlocks: Glass
Red tech points: 30
Green tech points: 10
Position: Column 3
Effect: Unlocks Glass.
Cost: 30 Red tech points
Cost: 10 Green tech points
Requirement: Requires : Bronze Melting

Requires

Unlocks

Glass

Bronze Blades

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Tier 4

Unlocks: Bronze Axe
Unlocks: Bronze Pickaxe
Red tech points: 15
Green tech points: 5
Position: Column 4
Effect: Unlocks Bronze Axe and Bronze Pickaxe.
Cost: 15 Red tech points
Cost: 5 Green tech points
Requirement: Requires : Bronze Craft

Requires

Unlocks

Bronze Forge

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Tier 4

Unlocks: Tin
Unlocks: Bronze Ingot
Unlocks: Sluice Box
Red tech points: 20
Position: Column 4
Effect: Unlocks Tin, Bronze Ingot and Sluice Box.
Cost: 20 Red tech points
Requirement: Requires : Bronze Craft

Requires

Unlocks

Bronze Instruments

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Tier 4

Unlocks: Bronze Shovel
Unlocks: Bronze Hammer
Red tech points: 15
Green tech points: 5
Position: Column 4
Effect: Unlocks Bronze Shovel and Bronze Hammer.
Cost: 15 Red tech points
Cost: 5 Green tech points
Requirement: Requires : Bronze Craft

Requires

Unlocks

Glass Blowing

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Tier 4

Unlocks: Alchemy Flasks I
Unlocks: Empty Bottle
Red tech points: 45
Green tech points: 10
Position: Column 4
Effect: Unlocks Alchemy Flasks I and Empty Bottle.
Cost: 45 Red tech points
Cost: 10 Green tech points
Requirement: Requires : Glass

Requires

Unlocks

Herbert

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Tier 5

Status: Reputation
Reputation required: 20 reputation
Effect: Opens once the research before it is done and the reputation with Herbert reaches 20.
Requirement: Requires : Bronze Forge

Requires

Bronze Polishing

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Tier 5

Unlocks: Polished Bronze
Unlocks: Bronze tools
Unlocks: Copper Trinkets
Red tech points: 30
Position: Column 5
Effect: Unlocks Polished Bronze, Bronze tools and Copper Trinkets.
Cost: 30 Red tech points
Requirement: Requires : Bronze Forge

Requires

Unlocks

Firewood shed II

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Tier 5

Unlocks: Firewood shed II
Red tech points: 20
Green tech points: 5
Position: Column 5
Effect: Unlocks Firewood shed II.
Cost: 20 Red tech points
Cost: 5 Green tech points
Requirement: Requires : Bronze Forge

Requires

Unlocks

Firewood shed II

Reinforced Plank

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Tier 6

Unlocks: Reinforced Plank
Red tech points: 45
Position: Column 6
Effect: Unlocks Reinforced Plank.
Cost: 45 Red tech points
Requirement: Requires : Herbert

Requires

Unlocks

Reinforced Plank

Bronze Equipment

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Tier 6

Unlocks: Bronze Armor
Unlocks: Bronze Sword
Red tech points: 30
Position: Column 6
Effect: Unlocks Bronze Armor and Bronze Sword.
Cost: 30 Red tech points
Requirement: Requires : Herbert

Requires

Unlocks

Iron Forge

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Tier 6

Unlocks: Iron Ingot
Unlocks: Supply: Iron
Unlocks: Furnace II
Red tech points: 35
Position: Column 6
Effect: Unlocks Iron Ingot, Supply: Iron and Furnace II.
Cost: 35 Red tech points
Requirement: Requires : Bronze Polishing

Requires

Unlocks

Simple Barricades

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Tier 7

Unlocks: Barricade I
Unlocks: Spiked Barricade I
Unlocks: Fortified Barricade I
Red tech points: 60
Green tech points: 25
Position: Column 7
Effect: Unlocks Barricade I, Spiked Barricade I and Fortified Barricade I.
Cost: 60 Red tech points
Cost: 25 Green tech points
Requirement: Requires : Reinforced Plank

Requires

Unlocks

Bronze Weapons

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Tier 7

Unlocks: Light Pike
Unlocks: Reinforced Bow
Red tech points: 35
Green tech points: 10
Position: Column 7
Effect: Unlocks Light Pike and Reinforced Bow.
Cost: 35 Red tech points
Cost: 10 Green tech points
Requirement: Requires : Bronze Equipment

Requires

Unlocks

Iron Smithing

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Tier 7

Unlocks: Bronze Gear
Unlocks: Iron Nails
Unlocks: Iron Anvil
Red tech points: 50
Position: Column 7
Effect: Unlocks Bronze Gear, Iron Nails and Iron Anvil.
Cost: 50 Red tech points
Requirement: Requires : Iron Forge

Requires

Unlocks

Bellows

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Tier 7

Unlocks: Lens
Unlocks: Alchemy Flasks II
Unlocks: Bellows
Red tech points: 30
Position: Column 7
Effect: Unlocks Lens, Alchemy Flasks II and Bellows.
Cost: 30 Red tech points
Requirement: Requires : Iron Forge

Requires

Unlocks

Archers Tower

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Tier 8

Unlocks: Archer Tower I
Unlocks: Expand Military Building Area
Red tech points: 60
Green tech points: 25
Position: Column 8
Effect: Unlocks Archer Tower I and Expand Military Building Area.
Cost: 60 Red tech points
Cost: 25 Green tech points
Requirement: Requires : Simple Barricades

Requires

Unlocks

Zombie Digging

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Tier 8

Status: Hidden
Unlocks: Clay Digger Stand
Unlocks: Sand Digger Stand
Unlocks: Porter Station
Red tech points: 50
Blue tech points: 10
Position: Column 8
Effect: Unlocks Clay Digger Stand, Sand Digger Stand and Porter Station.
Cost: 50 Red tech points
Cost: 10 Blue tech points
Requirement: Requires : Iron Smithing

Requires

Unlocks

Iron Works

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Tier 8

Unlocks: Iron Detail
Unlocks: Iron Kit I
Red tech points: 75
Position: Column 8
Effect: Unlocks Iron Detail and Iron Kit I.
Cost: 75 Red tech points
Requirement: Requires : Iron Smithing

Requires

Unlocks

Zombie Mining

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Tier 8

Status: Hidden
Unlocks: Zombie Miner
Unlocks: Porter Station
Red tech points: 60
Blue tech points: 10
Position: Column 8
Effect: Unlocks Zombie Miner and Porter Station.
Cost: 60 Red tech points
Cost: 10 Blue tech points
Requirement: Requires : Iron Smithing

Requires

Unlocks

Smithy I

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Tier 8

Unlocks: Brick
Unlocks: Glass
Unlocks: Smithy I
Red tech points: 75
Blue tech points: 20
Position: Column 8
Effect: Unlocks Brick, Glass and Smithy I.
Cost: 75 Red tech points
Cost: 20 Blue tech points
Requirement: Requires : Iron Smithing

Requires

Unlocks

Reinforced Beam

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Tier 9

Unlocks: Reinforced Beam
Red tech points: 75
Position: Column 9
Effect: Unlocks Reinforced Beam.
Cost: 75 Red tech points
Requirement: Requires : Iron Works

Requires

Unlocks

Reinforced Beam

Iron Equipment

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Tier 9

Unlocks: Iron Armor
Unlocks: Iron Sword
Red tech points: 80
Position: Column 9
Effect: Unlocks Iron Armor and Iron Sword.
Cost: 80 Red tech points
Requirement: Requires : Iron Works

Requires

Unlocks

Iron Instruments I

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Tier 9

Unlocks: Iron Axe
Unlocks: Iron Shovel
Red tech points: 80
Blue tech points: 15
Position: Column 9
Effect: Unlocks Iron Axe and Iron Shovel.
Cost: 80 Red tech points
Cost: 15 Blue tech points
Requirement: Requires : Iron Works

Requires

Unlocks

Iron Instruments II

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Tier 9

Unlocks: Iron Hammer
Unlocks: Iron Pickaxe
Red tech points: 80
Blue tech points: 15
Position: Column 9
Effect: Unlocks Iron Hammer and Iron Pickaxe.
Cost: 80 Red tech points
Cost: 15 Blue tech points
Requirement: Requires : Iron Works

Requires

Unlocks

Smithy: Hammer

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Tier 9

Unlocks: Iron Ingot
Unlocks: Iron Kit I
Unlocks: Smithy: Hammer
Red tech points: 80
Blue tech points: 30
Position: Column 9
Effect: Unlocks Iron Ingot, Iron Kit I and Smithy: Hammer.
Cost: 80 Red tech points
Cost: 30 Blue tech points
Requirement: Requires : Smithy I

Requires

Unlocks

Robust Barricades

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Tier 10

Unlocks: Barricade II
Unlocks: Spiked Barricade II
Unlocks: Fortified Barricade II
Red tech points: 90
Green tech points: 30
Position: Column 10
Effect: Unlocks Barricade II, Spiked Barricade II and Fortified Barricade II.
Cost: 90 Red tech points
Cost: 30 Green tech points
Requirement: Requires : Reinforced Beam

Requires

Unlocks

Iron Weapons

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Tier 10

Unlocks: Battle Pike
Unlocks: Battle Bow
Red tech points: 90
Blue tech points: 10
Position: Column 10
Effect: Unlocks Battle Pike and Battle Bow.
Cost: 90 Red tech points
Cost: 10 Blue tech points
Requirement: Requires : Iron Equipment

Requires

Unlocks

Iron Products

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Tier 10

Unlocks: Advanced Detail
Unlocks: Iron tools
Red tech points: 90
Blue tech points: 10
Position: Column 10
Effect: Unlocks Advanced Detail and Iron tools.
Cost: 90 Red tech points
Cost: 10 Blue tech points
Requirement: Requires : Iron Instruments I , Iron Instruments II

Requires

Unlocks

Zombie Gears

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Tier 10

Unlocks: Zombie Carousel
Red tech points: 90
Blue tech points: 20
Position: Column 10
Effect: Unlocks Zombie Carousel.
Cost: 90 Red tech points
Cost: 20 Blue tech points
Requirement: Requires : Smithy: Hammer

Requires

Unlocks

Zombie Carousel

Smithy: Bellows

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Tier 10

Unlocks: Tableware
Unlocks: Glass Containers
Unlocks: Smithy: Bellows
Red tech points: 90
Blue tech points: 20
Position: Column 10
Effect: Unlocks Tableware, Glass Containers and Smithy: Bellows.
Cost: 90 Red tech points
Cost: 20 Blue tech points
Requirement: Requires : Smithy: Hammer

Requires

Unlocks

Archers Tower II

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Tier 11

Unlocks: Archer Tower II
Red tech points: 100
Green tech points: 50
Position: Column 11
Effect: Unlocks Archer Tower II.
Cost: 100 Red tech points
Cost: 50 Green tech points
Requirement: Requires : Robust Barricades

Requires

Unlocks

Archer Tower II

Jack

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Tier 11

Status: Reputation
Reputation required: 70 reputation
Effect: Opens once the research before it is done and the reputation with Jack reaches 70.
Requirement: Requires : Iron Products

Requires

Steel Smithing

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Tier 12

Unlocks: Steel Detail
Unlocks: Steel Screws
Unlocks: Steel Anvil
Unlocks: Lantern II
Red tech points: 120
Blue tech points: 15
Position: Column 12
Effect: Unlocks Steel Detail, Steel Screws, Steel Anvil and Lantern II.
Cost: 120 Red tech points
Cost: 15 Blue tech points
Requirement: Requires : Jack

Requires

Unlocks

Reinforced Barricades

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Tier 13

Unlocks: Barricade III
Unlocks: Spiked Barricade III
Unlocks: Fortified Barricade III
Red tech points: 150
Green tech points: 75
Position: Column 13
Effect: Unlocks Barricade III, Spiked Barricade III and Fortified Barricade III.
Cost: 150 Red tech points
Cost: 75 Green tech points
Requirement: Requires : Steel Smithing

Requires

Unlocks

Steel Instruments I

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Tier 13

Unlocks: Steel Hammer
Unlocks: Steel Axe
Red tech points: 150
Blue tech points: 20
Position: Column 13
Effect: Unlocks Steel Hammer and Steel Axe.
Cost: 150 Red tech points
Cost: 20 Blue tech points
Requirement: Requires : Steel Smithing

Requires

Unlocks

Steel Instruments II

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Tier 13

Unlocks: Steel Pickaxe
Unlocks: Steel Shovel
Red tech points: 150
Blue tech points: 20
Position: Column 13
Effect: Unlocks Steel Pickaxe and Steel Shovel.
Cost: 150 Red tech points
Cost: 20 Blue tech points
Requirement: Requires : Steel Smithing

Requires

Unlocks

Steel Casting

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Tier 13

Unlocks: Engineering Details
Unlocks: Steel tools
Unlocks: Casting Table
Red tech points: 150
Blue tech points: 20
Position: Column 13
Effect: Unlocks Engineering Details, Steel tools and Casting Table.
Cost: 150 Red tech points
Cost: 20 Blue tech points
Requirement: Requires : Steel Smithing

Requires

Unlocks

Archers Tower III

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Tier 14

Unlocks: Archer Tower III
Red tech points: 160
Green tech points: 80
Position: Column 14
Effect: Unlocks Archer Tower III.
Cost: 160 Red tech points
Cost: 80 Green tech points
Requirement: Requires : Reinforced Barricades

Requires

Unlocks

Archer Tower III

Steel Weapons

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Tier 14

Unlocks: Knight's Spear
Unlocks: Heavy Bow
Red tech points: 160
Blue tech points: 10
Position: Column 14
Effect: Unlocks Knight's Spear and Heavy Bow.
Cost: 160 Red tech points
Cost: 10 Blue tech points
Requirement: Requires : Steel Instruments I

Requires

Unlocks

Steel Equipment

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Tier 14

Unlocks: Steel Armor
Unlocks: Steel Sword
Red tech points: 160
Blue tech points: 10
Position: Column 14
Effect: Unlocks Steel Armor and Steel Sword.
Cost: 160 Red tech points
Cost: 10 Blue tech points
Requirement: Requires : Steel Instruments II

Requires

Unlocks

Smithy II

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Tier 14

Unlocks: Clay Molds
Unlocks: Iron Kit II
Unlocks: Smithy II
Red tech points: 160
Blue tech points: 20
Position: Column 14
Effect: Unlocks Clay Molds, Iron Kit II and Smithy II.
Cost: 160 Red tech points
Cost: 20 Blue tech points
Requirement: Requires : Steel Casting

Requires

Unlocks

Masterwork Equipment

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Tier 15

Unlocks: Master Sword
Unlocks: Master Armor
Red tech points: 200
Blue tech points: 25
Position: Column 15
Effect: Unlocks Master Sword and Master Armor.
Cost: 200 Red tech points
Cost: 25 Blue tech points
Requirement: Requires : Steel Equipment

Requires

Unlocks

Lenses

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Tier 15

Unlocks: Lens
Unlocks: Smithy: Press
Red tech points: 175
Blue tech points: 20
Position: Column 15
Effect: Unlocks Lens and Smithy: Press.
Cost: 175 Red tech points
Cost: 20 Blue tech points
Requirement: Requires : Smithy II

Requires

Unlocks

Steel Works

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Tier 15

Unlocks: Engineering Kit
Unlocks: Supply: Steel Tools
Unlocks: Smithy: Grindstone
Red tech points: 175
Blue tech points: 20
Position: Column 15
Effect: Unlocks Engineering Kit, Supply: Steel Tools and Smithy: Grindstone.
Cost: 175 Red tech points
Cost: 20 Blue tech points
Requirement: Requires : Smithy II

Requires

Unlocks

Connections 47

Tech tree

Tier 1

Tier 2

Tier 3

Tier 4

Tier 5

Tier 6

Tier 7

Tier 8

Tier 9

Tier 11

Tier 12

Tier 13

Tier 14

Tier 15

Branch summary

Technologies: 45
Columns: 15
Total red tech points: 3680
Total green tech points: 330
Total blue tech points: 340
Reputation gates: 2
Branch opens: Wake up at home during the intro.

Research rules

Research branches: 5
Building, Metallurgy and Farming: Available after waking at home in the intro.
Theology: Available during Holy Moly!
Anatomy and Alchemy: Available after placing the first body on the autopsy table.
Research prerequisites: Complete every connected technology to the left.
Tech-point sources: Gathering; crafting; selected items; studying new items at the Study Table.
Cooking: 20 dish groups; 0 tech points; granted by events.

Red tech points

Meaning: Crafting and material-working knowledge.

Green tech points

Meaning: Natural knowledge and the underlying nature of objects.

Blue tech points

Meaning: Spiritual knowledge concerning nonphysical matters.

Reputation gates

Opening rule: Reach the displayed reputation and finish all connected prior research.