Research/Classical

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Time values may represent the benefits of wonders and research and number of libraries/universities already completed so your requirements may vary. To calculate the exact time, divide the research points column by the sum of the levels of all your libraries (rounding down minutes).

Name	Research Institution			Research Points	Prerequisites	Rewards
Governance (I)	Library	3:00:00	200	12:00:00	City Centre	Enables additional settlement
Forest Building	Library	9:37:00	1000	77:00:00	City Centre	Allows construction of any building on forest tiles
Hydraulic Mining	Library				City Centre, Iron mine	Enables Iron mine upgrades
Improved Irrigation	Library				City Centre, Farm (Classical)	Enables further Farm upgrades
Warehouse Efficiency	Library				City Centre, Warehouse (Classical)	Enables further Warehouse upgrades
Stock Taking	Library				City Centre	Increases resource and gold capicity across the empire
The Circus	Library				City Centre	Imporves mood across the empire
Improved drainage	Library	9:37:00	1200	77:00:00	City Centre, Quarry (Classical)	Enables further Quarry upgrades
Stone saws	Library	7:30:00	1700	90:00:00	Improved drainage	+3% stone production from Quarries
Springboards	Library				City Centre, Logging Camp (Classical)	Enables further Logging Camp upgrades
Hardened Saws	Library				Springboards	Enables Sawmill upgrades
Cut-to-length Logging	Library	2:00:00		6:00:00	Springboards	+3% wood production from Logging camps
Town Planning	Library				City Centre	Enables further City Centre upgrades
Currency	Library	1:00:00	200	3:00:00	Town Planning, Market	Enables Market upgrades
Efficient Customs	Library	1:00:00	200	3:00:00	Currency, Customs House	Enables Customs House upgrades
Philosophy	Library				Town Planning, Library (Classical)	Enables further Library upgrades
Advanced Ironworking	Library	1:00:00	200	3:00:00	Philosophy, Blacksmith	Enables Blacksmith upgrades
Infantry Scuta	Library	3:00:00	300	12:00:00	Advanced Ironworking	Boosts melee unit defence vs. ranged and artillery units
Cavalry Shields	Library				Advanced Ironworking	Boosts melee unit defence vs. mounted and vehicle units
Tactics	Library				Town Planning, Parade Ground (Classical)	Enables further Parade Ground upgrades
Binoculars	Library				Tactics, Watchtower (Classical)	Enables further Watchtower upgrades
Armourer Training	Library	3:00:00	300	12:00:00	Tactics, Armoury	Enables Armoury upgrades
Universal Joints	Library				Armourer Training	Boosts classical artillery damage vs. mounted units
Riding	Library	6:15:00	300	25:00:00	Tactics, Stable	Enables Stable upgrades
Sanitary Barracks	Library				Tactics, Barracks (Classical)	Enables further Barracks upgrades
Heavy Bolts	Library				Sanitary Barracks	Boosts Flaming Archer damage vs. artillery units on raids.

v · d · e	Research

v • d • e Realms
Ancient • Classical • Feudal • Renaissance • Imperial • Industrial • Modern • Future

v • d • e Ancient
Buildings	Village Planning • Writing • Efficient Storage
Military	Warfare • Troop housing • Observation
Resource	Agriculture • Durable Picks • Durable Axes
Obsolete	Barracks • Craftsmanship • Farm • Forestry • Library • Lookout Post • Parade Ground • Quarry • Storehouse • Village Centre • Hardened spears • Spearman • Sport • Improved irrigation • Philosophy • Religion

v • d • e Classical
Buildings	• Armoury • Blacksmith • Currency • Expert masonry • Fishing • Forest construction • Mine • Plaza • Reconnaissance • Sawmill
Military	Agile boots • Archer • Ballista • Chevalier • Flaming Archer • Gladii • Hardened Swords • Knight • Phalanxes • Polyboli • Re-Curve Bowman • Riding Technique • Ritter • Scorpio • Swordsmanship
Resource	Clearcutting • Improved drainage • Iron working • Manure • Mine carts • Monocropping • Springboards • Stone saws • Tilling
Other	Enlightenment • Governance I

v • d • e Feudal
Buildings	Capitol • Cottage • Hill Construction • Stone Mason • Stone Road • Tax Office • Town Hall • Training Yard
Military	Agincourt Bowmen • Catapults • Crusaders • Halberdiers • Hardened Arrows • Horsemen • Knight Training • Longbowmen • Mangonel • Master Archer • Onager • Pikemen • Pollaxers • Rations • Supply Chain • Templars • Torsion Ballista
Resource	Box Mining • Fishing Weir • Hematite Enrichment • Metallurgy • Room And Pillar Mining • Selective Logging • Smelting • Timber Management
Culture	Moral Philosophy • Reformation • Sculpture
Other	Bartering • Caravans • Governance II • Revenue • Taxation

v • d • e Renaissance
Buildings	Architecture • Customs House • Engineering • Foundry • Market • Recruitment Office • University • Warehouse
Military	Arbalest • Bowmanship • Commandeering • Conditioning • Couillard • Crossbowman • Demi-Lancer • Explorer • Firebrand • Gendarmes • Horse Breeding • Incendiary Missiles • Logistics Corps • Pikeman Training • Repeating Crossbow • Trebuchet
Resource	Gillnetting
Culture	Education • Fine Art • High Fashion • Humanism • Literature • Scientific Revolution • Social Reform • Opulence
Other	Exploitation • Governance III • Logistics • Progressive Taxation • Redistribution • Representation • Repricing • Secure Transit • Tallage

v • d • e Imperial
Buildings	Academy • Apartment • Blueprints • City centre • Coal Mine • Coke Furnace • Factory • Farmland Construction • Gunsmith • Optical Surveyance • Processing plant • Watchtower
Military	Basic Training • Cannon • Cavalryman • Combat Training • Conscription • Dragoons • Falconet • Grenadiers • Hardened Bolts • Hussars • Long Gun • Musketman • Redcoat • Seigniorage
Resource	Blast Mining • Hurrying • Seine Fishing
Culture	Antiquities • Capitalist Agenda • Expansionist Theory • Imperialism • Public House • Theatre
Other	Governance IV • Improved Production Methods • Income Tax • Manufacturing • Railroad • Subsidisation • Sustainability

v • d • e Industrial
Buildings	Army Fort • Bank • Desert Construction • Oil Well • Refinery
Military	Artillery • Cavalry Theory • Commando • Field Gun • Field Medic Training • Flintlock Muskets • Howitzer • Marksman • Mortars • Officer Training • Resocialization • Rifleman
Resource	Anthracite Enrichment • Longwall Mining • Opencast Mining • Prospecting • Pumpjack
Culture	Cafe • Nouveau Cuisine • Tea Rooms
Other	Cotton Mill • Governance V • Industrial Revolution • Machine Tools • Sales Tax • Tax Policy • Trade Unions • Urbanisation • Windfall Profits Tax

v • d • e Modern
Buildings	Aerodrome • Aluminum Plant • Bauxite Laboratory • Metropolis • Research Facility • Shopping Centre • Vehicle Bay
Military	Assault Rifle • Attack Chopper • Bomber • Explosive Shells • Fighter • Flak Cannon • Infantry Fighting Vehicle • Infantryman • Marines • Nebelwerfer • Panzergrenadiers • Rocket Artillery • Special Forces Training • Tank • Tank Hunter
Resource	Efficient Boring • Fluid Mechanics • Hydraulic Fracturing
Culture	Cinema • Television • The Internet • Video Games
Other	Air Freight • Cargo • Corporation Tax • Governance VI • Governance VII • Inheritance Tax • Mass Production • Mechanisation • Pigovian Taxes • Poll Tax • Recycling

v • d • e Future
Buildings	Commercial Building
Military	Interceptor • Interceptor Railgun • Laser Weapons • Magnetic Acceleration • Medibots • Mobil SAM Battery • NGAD • Sonic Superpositioning • Uranium Shells • VTOL
Culture	Artificial Intelligence • Artificial Photosynthesis • Augmented Cognition • Augmented Reality • Phased Array Optics • Quantum Computing • Quantum Dots • Semantic Web • Ubiquitous Connectivity • Virtual Worlds • Web 3.0
Other	3D Printing• Air Tax• Carbon Nanotubes • Connectivity Tax • Freedom Tax • Governance VIII • Governance IX • Ministry of Plenty • Perpetual Inflation • Synthetic Genetics • Wireless Energy Transfer