Technology

The tech tree

Technologies ("Techs") are empire upgrades that cost Science and provide various benefits. Each Technology unlocks additional Technologies when researched.

All available Techs are placed in a draw pile and shuffled. Whenever a Tech is completed, Four Techs (five, with The Oracle, and three, at the beginning of the game) will be drawn from this shuffled deck and presented to the player to choose from. One can be selected to research, at which point the Nation's Science output will be dedicated to paying the Tech's cost until it is fully researched. Techs not chosen will be put in a discard pile which is shuffled once the deck is empty to form a new deck. #Bonus Cards not chosen will be permanently removed from the game. Scholar Leaders can redraw Techs once each turn, discarding all currently offered Techs (permanently, for Bonus Cards) to draw a new hand.

After a tech is completed, any newly available techs are added to the discard pile and a new set of techs will be drawn from the draw pile for the player to choose from.

Bonus Cards

Some Technologies unlock Bonus Cards, which are added to the discard pile just like the regular Techs unlocked by researching that Tech. When researched, these Bonus Cards give a one-time bonus, such as 200 , and do not unlock further Techs. If Bonus Cards are not researched the first time they are offered, they are trashed, or permanently removed from the game. Because of this, it is sometimes useful to time Technology research so that Bonus Cards are unlocked when they will be useful, rather than allowing them to be trashed because they appeared when not needed.

List of Bonus Cards

Name	Unlocked By	Cost	Bonus
Stone Boost	Stonecutting	40	200
Food Boost	Husbandry	60	200
Free Settler	Drama	60	Gain Settler in Capital
Border Boost	Aristocracy	60	[All Cities] +6 Border Tiles
Free Trireme	Navigation	100	Gain Trireme in Capital
Orders Boost	Phalanx	100	20
Free Exotic Fur	Spoked Wheel	100	Add Exotic Fur
Free Archer	Forestry	100	Gain Archer in Capital
Free Ebony	Forestry	100	Add Ebony
Free Bireme	Steel	100	Gain Bireme in Capital
Training Boost	Steel	100	800
Free War Elephant	Steel	100	Gain War Elephant in Capital
Civics Boost	Sovereignty	100	800
Free Court Scholar	Metaphysics	100	Gain Court Scholar
Money Boost	Coinage	200	4,000
Free Silk	Coinage	200	Add Silk
Free Court Minister	Citizenship	200	Gain Court Minister
Free Maceman	Portcullis	200	Gain Maceman in Capital
Free Onager	Portcullis	200	Gain Onager in Capital
Free Perfume	Architecture	200	Add Perfume
Free Horseman	Land Consolidation	200	Gain Horseman in Capital
Free Horse Archer	Land Consolidation	200	Gain Horse Archer in Capital
Free Ballista	Composite Bow	200	Gain Ballista in Capital
Free Camel Archer	Monasticism	200	Gain Camel Archer in Capital
Free War Elephant	Machinery	200	Gain War Elephant in Capital
Goods Boost	Machinery	200	400 , 400 , 400
Free Court Scholar	Scholarship	400	Gain Court Scholar
Happiness Boost	Vaulting	400	[All Cities] +1 Happiness Level
Free Longbowman	Manor	400	Gain Longbowman (x2) in Capital
Free Court Soldier	Battle Line	400	Gain Court Soldier
Free Crossbowman	Hydraulics	400	Gain Crossbowman (x2) in Capital
Free Dromon	Cartography	400	Gain Dromon (x2) in Capital
Free Porcelain	Lateen Sail	600	Add Porcelain
Free Court Minister	Jurisprudence	600	Gain Court Minister
Free Court Merchant	Fiscal Policy	1000	Gain Court Merchant
Free Court Soldier	Infantry Square	1000	Gain Court Soldier
Free Court Merchant	Chain Drive	1000	Gain Court Merchant

List of Technologies

Technologies are listed below, sorted by tier. Technologies of the same tier appear in the same column of the Tech tree, and have the same cost, but are otherwise not necessarily related.

Tier 1 (80 Science)

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

Tier 2 (120 Science)

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

Tier 3 (200 Science)

Technology	Prerequisites	Tech Cards Unlocked	Units Unlocked	Improvements Unlocked	Other Unlocks
Navigation	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

Tier 4 (400 Science)

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

Tier 5 (600 Science)

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

Tier 6 (1000 Science)

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

Tier 7 (1600 Science)

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)

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, with the cost increasing by 500 Science each time.