Tech Tree

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The tech tree

Techs (short for "technologies") are empire upgrades that cost science and provide various benefits and make additional techs and some laws and events available.

All available techs are placed in a draw pile. 4 techs (5 if you built the Oracle) will be randomly selected and presented to the player to choose from. 1 can be selected, the others will be placed into the discard pile (boosts or free units will be discarded). If your leader is a scholar you can do a 1-time redraw of available techs from the draw pile (this will not cause boosts or free unit cards to be discarded).

After a tech is completed, any new available techs are added to the draw pile, and a new set of techs will be selected from the draw pile for the player to choose from. Techs will be moved from the discard pile to the draw pile when the draw pile is empty.


Tier 1 (100 Science)[edit]

Technology Prerequisites Tech Cards Unlocked Units Unlocked Improvements Unlocked Other Unlocks
Ironworking
None Husbandry
Labor Force
Steel (with Military Drill)
Warrior
Stonecutting
None Drama
Polis
Stone Boost
Fort
Quarry
Trapping
None Military Drill Slinger Camp
Divination
None Aristocracy Shrine
Administration
None Rhetoric
Free Worker
Treasury
Granary
Stone Boost
+200 Stone.png

Tier 2 (150 Science)[edit]

Technology Prerequisites Tech Cards Unlocked Units Unlocked Improvements Unlocked Other Unlocks
Labor Force
Ironworking Navigation
Phalanx
Roads
Slavery / Freedom
Revelation
Husbandry
Ironworking Spoked Wheel
Food Boost
Pasture
Drama
Stonecutting Portcullis (with Spoked Wheel)
Free Settler
Odeon Gnosticism
Polis
Stonecutting Forestry Hamlet Ask To Declare War
Military Drill
Trapping Composite Bow
Steel (with Ironworking)
Barracks Rally Troops
Aristocracy
Divination Sovereignty (with Rhetoric)
Monasticism
Border Boost
Ambassador
Centralization / Vassalage
Rhetoric
Administration Metaphysics
Sovereignty (with Aristocracy)
Forum I
Epics / Exploration
Dualism
Border Boost
(All Cities) +6 Border Tiles
Food Boost
+200 Food.png

Tier 3 (250 Science)[edit]

Technology Prerequisites Tech Cards Unlocked Units Unlocked Improvements Unlocked Other Unlocks
Labor Force Coinage
Cartography (with Metaphysics)
Free Bireme
Bireme Colonies / Serfdom
Can automate scouts
Phalanx
Labor Force Citizenship
Battle Line (with Steel)
Free Hoplite
Orders Boost
Spearman
Spoked Wheel
Husbandry Portcullis (with Drama)
Stirrups (with Citizenship)
Free Chariot
Chariot Chancellor
Forestry
Polis Land Consolidation
Free Court Scholar
Free Heavy Chariot
Free Light Chariot
Lumbermill Enlightenment
Steel
Ironworking
Military Drill
Battle Line (with Phalanx)
Free African Elephant
Free Hastatus
Training Boost
Axeman
Sovereignty
Aristocracy
Rhetoric
Machinery
Civics Boost
Tyranny / Constitution
Metaphysics
Rhetoric Cartography (with Navigation) Convert to State Religion
High Synod
Archive I
Redemption
Civics Boost
+800 Civics.png
Orders Boost
+20 Orders.png
Training Boost
+800 Training.png

Tier 4 (400 Science)[edit]

Technology Prerequisites Tech Cards Unlocked Units Unlocked Improvements Unlocked Other Unlocks
Coinage
Navigation Lateen Sail (with Cartography)
Money Boost
Market Pacify City
Automate Workers
Citizenship
Phalanx Scholarship
Stirrups (with Spoked Wheell)
Free Court Minister
Courthouse Divine Rule / Legal Code
Portcullis
Drama
Spoked Wheel
Architecture
Free Battering Ram
Free Maceman
Spymaster
Moat
Land Consolidation
Forestry Cohorts (with Battle Line)
Manor (with Composite Bow)
Free Camel Archer
Free War Elephant
Camel Archer
War Elephant
Grove
Composite Bow
Military Drill Manor (with Land Consolidation)
Free Akkadian Archer
Free Archer
Free Palton Cavalry
Archer Range
Monasticism
Aristocracy Doctrine Monastery Monotheism / Polytheism
Machinery
Sovereignty Hydraulics
Free Onager
Onager
Money Boost
+200 Money.png

Tier 5 (600 Science)[edit]

Technology Prerequisites Tech Cards Unlocked Units Unlocked Improvements Unlocked Other Unlocks
Scholarship
Citizenship Jurisprudence
Windlass (with Hydraulics)
Free Court Scholar
Library Expose Agent Network
Move Agent Network
Stirrups
Citizenship
Spoked Wheel
Martial Code
Free Horse Archer
Free Horseman
Free Kushite Cavalry
Free Three Man Chariot
Horse Archer
Horseman
Architecture
Portcullis Vaulting
Free Siege Tower
Bath Philosophy / Engineering
Manor
Composite Bow
Land Consolidation
Bodkin Arrow
Free Turreted Elephant
Goods Boost
Conscript Professional Army / Volunteers
Battle Line
Phalanx
Steel
Barding (with Martial Code)
Cohorts (with Land Consolidation)
Free Court Soldier
Maceman
Doctrine
Monasticism Temple Tolerance / Orthodoxy
Hydraulics
Machinery Windlass (with Scholarship)
Ballistics (with Cartography)
Free Ballista
Ballista Mill
Cartography
Metaphysics
Navigation
Lateen Sail (with Coinage)
Ballistics (with Hydraulics)
Trireme Harbor Steal Research
Goods Boost
+400 Iron.png, +400 Stone.png, +400 Wood.png

Tier 6 (1000 Science)[edit]

Technology Prerequisites Tech Cards Unlocked Units Unlocked Improvements Unlocked Other Unlocks
Lateen Sail
Cartography
Coinage
Fiscal Policy (with Jurisprudence)
Free Dromon
Dromon Autarky / Trade League
Jurisprudence
Scholarship Fiscal Policy (with Lateen Sail)
Free Court Minister
Insurrection
Guilds / Elites
Martial Code
Stirrups Barding (with Battle Line) Towers Pilgrimage / Holy War
Vaulting
Architecture Happiness Boost Cathedral Iconography / Calligraphy
Bodkin Arrow
Manor Infantry Square
Free Longbowman
Free Cimmerian Archer
Longbowman
Windlass
Scholarship
Hydraulics
Chain Drive
Free Cataphract Archer
Free Crossbowman
Crossbowman
Happiness Boost
(All Cities) - +1 Happiness Level

Tier 7 (1500 Science)[edit]

Technology Prerequisites Tech Cards Unlocked Units Unlocked Other Unlocks
Fiscal Policy
Lateen Sail
Jurisprudence
Economic Reform
Free Court Merchant
Coin Debasement / Monetary Reform
Barding
Steel
Martial Code
Military Prestige (with Infantry Square and Cohorts) Cataphract
Infantry Square
Bodkin Arrow Military Prestige (with Barding and Cohorts)
Free Court Soldier
Free Phalangite
Pikeman
Cohorts
Land Consolidation
Battle Line
Military Prestige (with Barding and Infantry Square)
Free Legionary
Swordsman
Chain Drive
Windlass Industrial Progress (with Ballistics) Polybolos
Ballistics
Hydraulics
Cartography
Industrial Progress (with Chain Drive) Mangonel

Tier 8 (2000 Science)[edit]

Technology Prerequisites Other Unlocks
Economic Reform
Fiscal Policy Court Merchant
+1 Victory Point
Military Prestige
Barding
Infantry Square
Cohorts
Court Soldier
+1 Victory Point
Industrial Progress
Chain Drive
Ballistics
Court Minister
+1 Victory Point

All Tier 8 technologies can be researched multiple times