All Discoveries

Every discovery of the Anno 117 research tree in one list, with its knowledge cost, requirements, and everything it unlocks.

Research

199 discoveries

Drainage

64,000 knowledgeRoman

We shall seed our gardens in the soggy soil of once-wet lands.

Requires

adjacent discovery researched; PopulationByLevel Mercators ≥ 1

Unlocks

Drainage Channel and Sluice Gate

Warehouse Organisation

4,800 knowledge

An increase in doors has led to a decrease in chores. The carts practically unload themselves.

Unlocks

Warehouse Upgrade

Sturdy Construction

3,000,000 knowledge

We have learned a lot from many years of carpentry.

Warehouse Organisation

750,000 knowledge

Within the walls of our grandest warehouses, no action goes to waste.

Unlocks

Warehouse Upgrade

Alliance Treaties

220,000 knowledge

Why be foes when we could be foederati?

Unlocks

Alliance Treaty

Trading Post Improvements

4,800 knowledge

As far as Trading Posts go, we have raised the ceiling.

Unlocks

Trading Post Upgrade

Trading Post Improvements

750,000 knowledge

The vital nexus between the sea and the land; now all the more vital.

Unlocks

Trading Post Upgrade

Headhunting

1,500,000 knowledge

The law of might has ever been the first and last.

Unlocks

Appoint Rival As Specialist

Paved Roads

8,000 knowledge

Fast Roman roads for fast Romans.

Requires

adjacent discovery researched; GoodsInStock Concrete ≥ 5

Unlocks

Paved Roads

Duct Irrigation

64,000 knowledge

Akin to a river in the desert, our aqueducts can now supply our farms with fresh, clean water.

Unlocks

Aqueduct Boost: Farms

Hushing

92,000 knowledgeCeltic

We shall blast the dross aside in a torrent!

Requires

adjacent discovery researched; PopulationByLevel Smiths ≥ 1

Unlocks

Aqueduct Boost: Mines

Vitruvius-class Crossbeams

750,000 knowledge

Our scorpion's stings fly swift and true.

Tower Ballistae

92,000 knowledge

I pity the poor soul who gets hit by these...

Requires

adjacent discovery researched; Stone Walls

Unlocks

Tower Ballistae

Praetorians

750,000 knowledgeRoman

These men are the elite. But can you keep them in line?

Requires

adjacent discovery researched; PopulationByLevel Patricians ≥ 1

Unlocks

Praetorian Cavalry

Raising Sluices

1,500,000 knowledgeRoman

Even the Pontine marsh could become as dry as desert sands with these.

Requires

adjacent discovery researched; PopulationByLevel Nobles ≥ 1

Honeyed Arbour

1,500,000 knowledge

The savoury taste of wild honey certainly has some appeal.

Ulex & Agogae

1,500,000 knowledge

Using an innovative Plinian method we can capture any and all gold the rivers hold.

Pier-to-Pier Trading

220,000 knowledge

A dedicated pier for the comings and goings of merchants ought to finesse our trades.

Unlocks

Trade Pier

Seaport Specification

1,500,000 knowledge

By dedicating ports to specific purpose, commerce may flow like milk.

Unlocks

Good Specification in Trade Piers

Hazard Fighters

92,000 knowledge

The Vigiles are fire for these new precautions. A triumph for public safety!

Imperial Measures

1,500,000 knowledge

The imperial standard: uncia for all!

Stone Walls

36,000 knowledge

Stone stands strong and stalwart.

Requires

adjacent discovery researched; GoodsInStock Concrete ≥ 5

Unlocks

Stone Walls

Unlocks

Stone Gates

Unlocks

Stone Towers

Perilous Ports

360,000 knowledge

Should they seek to storm our ports, they will find no safe harbour.

Legionaries

36,000 knowledgeRoman

Rank-and-file soldiers of the legion, the force that conquered the known world.

Requires

adjacent discovery researched; PopulationByLevel Plebeians ≥ 1

Unlocks

Legionaries

Legionic Research

gate

Build a Barracks and generate at least 500 Knowledge.

Requires

Barracks ≥ 1; Knowledge ≥ 500

Dominion Research

gate

Conquer 1 Island and generate at least 9,000 Knowledge.

Requires

IslandOvertaken ≥ 1; Knowledge ≥ 9000

Aegis Research

gate

Build walls with a total length of 1,000 segments and generate at least 17,000 Knowledge.

Requires

WallLength ≥ 1000; Knowledge ≥ 17000

Nautical Research

gate

Build a Shipyard and generate at least 500 Knowledge.

Requires

Shipyards ≥ 1; Knowledge ≥ 500

Navarchal Research

gate

Sink 10 ships belonging to Raiders and generate
at least 2,205 Knowledge.

Requires

ObjectDestroyed Asset Pool All Pirate Ships ≥ 10; Knowledge ≥ 2205

Albionic Research

gate

Establish a Trade Route in Albion and generate
at least 500 Knowledge.

Requires

Knowledge ≥ 500

Monumental Research

gate

Construct 5 Aqueducts in Latium and produce
at least 9,000 Knowledge.

Requires

Aqueduct Source ≥ 5; Knowledge ≥ 9000

Metallurgical Research

gate

Open 12 Mines in Albion and generate
at least 9,000 Knowledge.

Requires

Mines ≥ 12; Knowledge ≥ 9000

Latin Research

gate

Establish a Trade Route in Latium and generate
at least 500 Knowledge.

Requires

Knowledge ≥ 500

Municipal Research

gate

Reach the City Status Growing City and generate
at least 500 Knowledge.

Requires

Knowledge ≥ 500

Populist Research

gate

Build 2 Baths or 2 Forums and produce
at least 2,070 Knowledge.

Requires

Baths ≥ 2; Forums ≥ 2; Knowledge ≥ 2070

Empyrean Research

gate

Reach 25,000 Devotion for a Patron Deity and generate
at least 9,000 Knowledge.

Requires

PatronDevotion Asset Pool All Gods ≥ 25000; Knowledge ≥ 9000

Gubernatorial Research

gate

Reach 50,000 total Global Prestige and generate
at least 9,000 Knowledge.

Requires

Knowledge ≥ 9000; Prestige ≥ 50000

Concordance Research

gate

Have 500 Romanised and 500 Celtic Population and generate at least 1,701 Knowledge.

Requires

PopulationByLevel Asset Pool RomanizedCeltic Population Levels T2&T3 ≥ 500; PopulationByLevel Asset Pool CelticCeltic Population Levels T2&T3 ≥ 500; Knowledge ≥ 1701

Repair Cranes

4,800 knowledge

Our ships will become their old selves again, one plank at a time.

Unlocks

Repair Crane

Valetudinaria

64,000 knowledge

Under the watchful eyes of the capsarii our men may live to fight another day.

Manor Invictus

360,000 knowledge

'til the last, we shall rage against the dying of the light.

Parmae

64,000 knowledge

Round, iron-framed shields are well-suited to guard against arrows. And are very loud if hit with a sword.

Equicurrian Chariots

1,500,000 knowledgeCeltic

The Celts may have the fiercest charioteers, but we Romans have the fastest.

Requires

adjacent discovery researched; PopulationByLevel Smiths ≥ 1

Protective Entourage

8,000 knowledge

Our auxilia are eager to protect and serve.

Scorpiones

64,000 knowledge

An elegant, Vitruvian design.

Requires

adjacent discovery researched; Siege Workshop ≥ 1

Unlocks

Scorpiones

Manipular Manouvres

750,000 knowledgeRoman

This shall prove to be quite the handful for our enemies.

Requires

adjacent discovery researched; PopulationByLevel Equites ≥ 1

Catapult Carriers

220,000 knowledge

From the safety of the sea, we may shatter our foes' security.

Unlocks

Ship Catapults

Balearic Ballistics

92,000 knowledge

Gymnesian efficiency!

Tuagh Dé Danann

360,000 knowledgeCeltic

Our Axe-Bearers fight with the blessing of Danu... or so they say.

Requires

adjacent discovery researched; PopulationByLevel Aldermen ≥ 1

Target Practice

92,000 knowledge

We may now train some basics units in our spare rooms, once we've removed the valuables.

Unlocks

Garrison Archer

Parabolics

64,000 knowledge

Application of Apollonius' arc shall guide us.

Spathas

1,500,000 knowledgeRoman

Broad of blade, but sharp of point; the best of the best for our best.

Requires

adjacent discovery researched; PopulationByLevel Patricians ≥ 1

Featherweight Frames

1,500,000 knowledge

These will be fastest sieges the world has ever seen.

Sword and Salt

3,000,000 knowledge

In any field of recruits, one may find a stalk of gold.

Mackerel Hauling

64,000 knowledge

These dubious lures have indisputable allure.

Harbour Grandmastery

360,000 knowledge

Our reach extends even to the very depths below.

Unlocks

Increased off-shore building range

Well-Ordered Warehouses

1,500,000 knowledge

Standard layouts, standard practises, standard standards - we excel in all standards.

Unlocks

Warehouse Discount

Fish Markets

11,800 knowledge

With the ebb and flow of the sea's gifts— the ebb and flow of denarii.

In Case Of Emergence

64,000 knowledgeCeltic

Whatever happens, wherever it happens, it's best we are prepared.

Requires

adjacent discovery researched; PopulationByLevel Smiths ≥ 1

Unlocks

Marsh Services

Blood of Terra

92,000 knowledge

Our miners will delve into the deepest depths to dig up deposits.

Blind Faith

128,000 knowledge

Now we have an eternally divine Plebeian following in our Villas.

Camp Campaigning

1,500,000 knowledge

Military ingenuity shall be benefit our civilians in a myriad of ways.

Beneath Bedrock

3,000,000 knowledge

Let us swallow our fears and delve deeper, yet deeper.

Healthy Competition

3,000,000 knowledge

Let us see if the cream of the crop may rise to the top...

Latrines

18,000 knowledge

Healthy roads beget healthy bodies, and healthy bodies beget healthy cities.

Unlocks

Latrines

Cult of Mercury-Lugus

64,000 knowledgeRoman

May Mercury bless our imperial coffers. And Lugus too.

Requires

adjacent discovery researched; PopulationByLevel Mercators ≥ 1

Unlocks

Mercury-Lugus

Right to Repair

360,000 knowledge

Our Vigiles will not end their vigil until our city's vitality is restored.

Villa Retinue

36,000 knowledge

Your households have been put to work; the supporting ribs of the city's backbone.

Quartermastery

4,800 knowledge

The captain's lavish quarters shall now be used to house cargo.

Cohabitive Collaboration

1,500,000 knowledge

The only way these experts can truly bounce ideas off each other is if they share the same walls.

Watchtowers

8,000 knowledge

Our watchmen shall watch; we shall watch them in turn.

Unlocks

Watchtowers

Cult of Epona

360,000 knowledgeCeltic

The patron of horses is now, too, a patron of ours.

Requires

adjacent discovery researched; PopulationByLevel Aldermen ≥ 1

Unlocks

Epona

Water Conservation

92,000 knowledge

Making the most of our supply will leave us with a useful surplus.

Requires

adjacent discovery researched

Praetorian Pumps

220,000 knowledge

Our siphonarii are now as adept as any sagittarius.

Sanitary Measures

92,000 knowledge

We invested, so we are less infested.

Shipwright Studies

64,000 knowledge

Swift, precise and efficient. These cranes move like extensions of themselves.

Requires

adjacent discovery researched; Repair Cranes

Large Loans

92,000 knowledge

Two ways to lose a friend: it's easiest to borrow... though we have much to lend.

Unlocks

Large Loan

Portitores

11,800 knowledge

A well-managed warehouse is a well-run warehouse.

Market Forces

4,800 knowledge

Breakfast with a cup of wine; something worth travelling for!

Marble Roads

360,000 knowledge

Bright, shining paths; a far cry from the dirt they were built on.

Requires

adjacent discovery researched; GoodsInStock Marble ≥ 5

Unlocks

Marble Road

Seasoned to Taste

750,000 knowledge

Demand for the sauce has spread as far north as Salinae.

Unlocks

Garum Demand in Albion

Asclepian Codices

360,000 knowledge

Aeschrion's Enchiridion, Polemo's Polemics, Cicero's Ode to Cabbage...

Recruitment Drive

3,000,000 knowledge

I believe the best and brightest dwell within our cities... all we need to do is find them.

The Art of Gift-Giving

92,000 knowledge

Everyone loves getting gifts, after all.

Unlocks

Large Gifts

Wells

8,000 knowledge

A city's lifeblood is its water supply.

Unlocks

Wells

Public Funding

1,500,000 knowledge

Near, far, wherever they are, trained public servants are here to ensure the plague does not go on and on.

Conservation Ordinance

1,500,000 knowledge

The same great views at a reduced hydrological cost!

Fenixwrights

1,500,000 knowledge

Once the fire fades, our city shall promptly be reborn from ashes.

Multi-task Menders

220,000 knowledge

If the situation calls, two things may happen at once.

Requires

adjacent discovery researched; Repair Cranes

Vino Veritas

1,500,000 knowledge

As Romans grow used to Albion, so too will the grapes.

Quinquiremes

220,000 knowledge

The princeps of the waves.

Requires

adjacent discovery researched; Trireme

Unlocks

Quinquireme

Plated Hulls

36,000 knowledge

Light enough to float, but heavy enough to withstand a blow or two.

Requires

adjacent discovery researched; GoodsInStock Armour ≥ 5

Unlocks

Plated Hulls

Shipboard Scorpiones

64,000 knowledge

Steady aim requires a steady hand; all the more so at sea...

Unlocks

Shipboard Scorpiones

Trireme

36,000 knowledge

With a third set of rowers we'll outspeed our rivals!

Unlocks

Trireme

Depots

4,800 knowledge

Dedicated storage space off the shore, where no rat dare tread.

Unlocks

Depot

Hurried Horrea

92,000 knowledge

Designating dedicated entrances and exists should speed our operations.

Voluntary Vigilance

8,000 knowledge

Our vigiles now have extra hands to fight against fire.

Night Watch

8,000 knowledge

'Fabricare diem, puncta aguntur celeriter'

Hippocratic Corps

36,000 knowledge

Into whatsoever houses they enter, they do so to help the sick.

Aqua Arborica

64,000 knowledgeRoman

Clean and clear springwater from the mountains ought to help the forests flourish.

Requires

adjacent discovery researched; PopulationByLevel Mercators ≥ 1

Unlocks

Aqueduct Boost: Plantations

Snuffing Sedition

220,000 knowledge

Thud!

Tower Contiguity

1,500,000 knowledge

With concentrated efforts, no invaders may intrude.

Aesthetic Aedificator

220,000 knowledge

Let the majesty of our cities outshine Rome itself!

Unlocks

Ornament Discount

Day Watch

64,000 knowledge

Our citizens no longer see the cohorts as a monstrous regiment. Well, not all of them.

Lingua Romana

64,000 knowledgeRoman

A common language breeds common ground.

Requires

adjacent discovery researched; PopulationByLevel Mercators ≥ 1

Cerere et Baccho

750,000 knowledge

Strong drinks find friends, whether made from grape or hop.

Unlocks

Beer Demand in Latium

Chariots

360,000 knowledgeCeltic

Let them take to the field with all the swiftness of the Circus Maximus.

Requires

adjacent discovery researched; PopulationByLevel Aldermen ≥ 1

Unlocks

Chariots

Another Brick In The Wall

3,000,000 knowledge

Let us augment our defences; stone by stone, layer by layer.

Cataphractarii

360,000 knowledge

Our cavalry shall be invincible! ...until their horses tire.

Co-ordinated Volleys

11,800 knowledge

By firing in unison, no space remains which does not contain an arrow.

Albionic Pillars

1,500,000 knowledge

Now the pillars of our community are where they need to be to prop us all up.

Reservoirs

128,000 knowledge

In the unlikely event the land ever dries out, we shall be prepared.

Cult of Cernunnos

64,000 knowledgeCeltic

The keeper of the forest speaks with many tongues. To him, all creatures flock... what about the worshippers?

Requires

adjacent discovery researched; PopulationByLevel Smiths ≥ 1

Unlocks

Cernunnos

Encampment Errands

750,000 knowledge

Civil engineering shall keep our engineers civil.

Gobannus-Model Bellows

1,500,000 knowledgeCeltic

The breath of a Celtic god heats our furnaces - according to the Smiths...

Requires

adjacent discovery researched; PopulationByLevel Aldermen ≥ 1

Tacking

36,000 knowledge

Our crews have learned the art of tacking.

Better Bellows

8,000 knowledgeRoman

Our control of the air allows greater control of our fuel.

Requires

adjacent discovery researched; PopulationByLevel Mercators ≥ 1

Rammed Earth

8,000 knowledge

Earthen supports reduce our upkeep when it comes to keeping walls up.

Sewing Circles

8,000 knowledge

The seeds of wisdom have been sewn.

Via Tributum

1,500,000 knowledge

The public shall pay for the public good.

Unlocks

Paved Road Discount

Unlocks

Marble Road Discount

Carpe Civitas

8,000 knowledge

Let us make a desolation in the name of peace.

Replanting

8,000 knowledgeCeltic

Our Kilns can now refuel the forests to make fuel for us all.

Requires

adjacent discovery researched; PopulationByLevel Smiths ≥ 1

Axe-Bearers

8,000 knowledgeCeltic

Barbarians or not, their knowledge of edges gives us an edge.

Requires

adjacent discovery researched; PopulationByLevel Smiths ≥ 1

Unlocks

Axe-Bearers

Funeral Games of Tailteann

64,000 knowledgeCeltic

Being dead is the only valid excuse for not participating in the Albionic games.

Requires

adjacent discovery researched; PopulationByLevel Smiths ≥ 1

Fabulae Togatae

220,000 knowledge

These works shall surely stand the test of time.

Abyssal Invocation

1,500,000 knowledge

Let our harbours stretch from sea to sea!

Requires

adjacent discovery researched; Harbour Grandmastery

Unlocks

Max. off-shore building range shore

Ordine Research

gate

Defeat a Raider and generate at least 9,000 Knowledge.

Requires

PirateDefeated Asset Pool All Pirates ≥ 1; Knowledge ≥ 9000

Legatic Research

gate

Expand your army to 5 Troops and generate
at least 1,800 Knowledge.

Requires

Troops ≥ 5; Knowledge ≥ 1800

Metropolitan Research

gate

Reach 25,000 total Global Population and produce
at least 17,000 Knowledge.

Requires

PopulationTotal ≥ 25000; Knowledge ≥ 17000

Devotional Research

gate

Devote 2 cities to a single Patron and generate
at least 500 Knowledge.

Requires

PatronIslands Ceres ≥ 2; PatronIslands Cernunnos ≥ 2; PatronIslands Epona ≥ 2; PatronIslands Mars ≥ 2; PatronIslands Mercury-Lugus ≥ 2; PatronIslands Minerva ≥ 2; PatronIslands Neptune ≥ 2; PatronIslands Vulcan ≥ 2; Knowledge ≥ 500

Cyclopedic Research

gate

Establish 5 Inter-regional Trade Routes and produce
at least 17,000 Knowledge.

Requires

Knowledge ≥ 17000

Phlogistic Research

gate

Store 150t Coal in Latium and generate
at least 1,503 Knowledge.

Requires

GoodsInStock Coal ≥ 150; Knowledge ≥ 1503

Wetland Research

gate

Drain 7,500 tiles of Marshland and generate
at least 1,602 Knowledge.

Requires

IrrigatedTilesCount ≥ 7500; Knowledge ≥ 1602

Firmer Foundations

360,000 knowledge

A high secret of concrete admixture at work.

Unlocks

Firmer Foundations

Harbourmastery

36,000 knowledge

Whether on land or at sea, we shall make the most of our territories.

Unlocks

Albionic Water Construction

Aleatoria

360,000 knowledgeRoman

Then let the die be cast.

Requires

adjacent discovery researched; PopulationByLevel Nobles ≥ 1

Unlocks

Gambling House

Untapped Soil

64,000 knowledge

Should one tree run dry, plant one more.

Safe Havens

36,000 knowledge

We hold the quay to succeed.

Unlocks

Latin Water Construction

Quays

360,000 knowledge

Proper footing is key.

Requires

adjacent discovery researched; GoodsInStock Concrete ≥ 5

Unlocks

Quay Street

Deep Depots

3,000,000 knowledge

One can never be too prepared to prepare.

Shrine Staffing

3,000,000 knowledge

A flamen or two would help us venerate the gods more widely.

Epona's Hoofbeat

360,000 knowledge

Even if she is not our patron, Epona is venerated in places high and low.

Villa Visitation

128,000 knowledge

Your magnificence should now be obvious to any and all visitants, ere.

Bargain Palisades

220,000 knowledge

A bit of knowhow, and the cost comes right down...unlike the wall itself, hopefully.

Unlocks

Wooden Wall Discount

Pro Domo

360,000 knowledge

A Governor's villa is their castrum.

Villa Novation

3,000,000 knowledge

We may be permitted to renovate our villas... though there are many forms that must first be filled out.

Woodland Rebirth

36,000 knowledge

The work of a lumberjack is never done.

Armoursmithing

8,000 knowledge

The best offence is a good defence, as Tacticus was known to say.

Unlocks

Armour Chain

Solutio Ad Hominem

1,500,000 knowledge

Nothing human is strange to us.

Unlocks

Philanthropy

Provisional Castra

4,800 knowledge

From now, our men shall rest in tents when the fighting isn't intense.

Unlocks

Encampment

Cognoscentic Research

gate

Make use of 5 Specialists on one Island and generate
at least 1,404 Knowledge.

Requires

Knowledge ≥ 1404

Albionic Loyalists

64,000 knowledge

We have selected only the most loyal, most enthusiastic locals...

Beaver Bother

1,500,000 knowledgeCeltic

Wherever the beavers go, there our traps shall be.

Requires

adjacent discovery researched; PopulationByLevel Aldermen ≥ 1

The Flight of Birds

1,500,000 knowledgeRoman

No thing that flies shall be spared from our care. In a manner of speaking.

Requires

adjacent discovery researched; PopulationByLevel Nobles ≥ 1

Imperial Parades

11,800 knowledgeCeltic

Parades at the barracks certainly send a message.

Requires

adjacent discovery researched; PopulationByLevel Smiths ≥ 1

Artificer Intelligence

11,800 knowledgeRoman

Artificer-made rock-throwing engines; what better demonstration of physical forces could there be?

Requires

adjacent discovery researched; PopulationByLevel Mercators ≥ 1

Pax Amicitia

1,500,000 knowledge

An argent tongue can do what a legion cannot.

Unlocks

Master Negotiator

Cautious Greeting

64,000 knowledge

Better safe than sorry, they say.

Unlocks

Cautious Greeting

Extra Horse Power

1,500,000 knowledge

Strong and noble creatures. Let us put them to work wisely.

Depotism

220,000 knowledge

It might be maniacal, but we now have yet more storage!

Requires

adjacent discovery researched; Depots

Brick By Brick

1,500,000 knowledge

In matters of safety, no cost is too great... but nevertheless, the cost is now lessened.

Unlocks

Stone Wall Discount

Hospitality

11,800 knowledge

Fine food, flowers in the hall, and somewhere to hang one's cloak.

Unlocks

Officia

Legally Enshrined

36,000 knowledge

Now we can kneel before more and various altars than ever.

Sacral Spaces

360,000 knowledge

Shrines abound, now that the lex has been made more lax.

Officialdom

360,000 knowledge

The bureaucratic needs of every one of our notable guests has been attended.

Warmer Hospitality

64,000 knowledge

Now our resident experts won't be treading on each others gowns and beards...

Slingers

4,800 knowledge

On target, we now have access to one of the most rudimentary but effective Roman units...

Unlocks

Slinger

Cover Positions

36,000 knowledge

Now our bow-bearing friends can safely cut loose.

Aux In, Aux Out

360,000 knowledge

Now our Villas can train an additional loyal band of Auxilia as a last line of defence. I bet the men will be excited to get started.

Rain Of Pain

750,000 knowledge

Let loose! They won't even know what hit them!

Unlocks

Garrison Archer

Cult of Minerva

11,800 knowledgeRoman

A voice, wise and clear, rings out from on high.

Unlocks

Minerva

Here Come The Cavalry

1,500,000 knowledge

The musky breath of horses now plumes from hidden positions at your Villas...

Unlocks

Garrison Cavalry

Obsidian Gathering

8,000 knowledge

Obsidian was used by our ancestors to hunt— now, its sharp contours soften into shapes that entice the eye.

Unlocks

Obsidian Gathering

Obsidian Statuettes

11,800 knowledge

A winged victory for every household shrine.

Requires

adjacent discovery researched; PopulationByLevel Equites ≥ 1

Unlocks

Statuettes

Cult of Vulcan

11,800 knowledgeRoman

True craft will never perish, or cease to inspire.

Unlocks

Vulcan

Latrunculi

18,000 knowledge

Muster armies and smash your enemies without ruining the economy.

Requires

adjacent discovery researched; PopulationByLevel Patricians ≥ 1

Unlocks

Latrunculi Sets

Volcanic Soil

750,000 knowledge

For every year of darkness, a hundred of prosperity.

Unlocks

Volcanic Soil Level 5

Thermic Shock

3,000,000 knowledge

The flow of lava cannot be controlled, but water and air can do the work of many men.

Unlocks

Increased Obsidian Deposits

Geological Research

gate

Make use of 3 of Caecilia's Specialists on one Island, and generate at least 5000 Knowledge.

Requires

Knowledge ≥ 5000

Opus Caementicium

750,000 knowledge

Mixed with volcanic ash, concrete unfolds its full potential.

Vulcan's Vigiles

1,500,000 knowledge

Brave enough to step into a burning building, smart enough to leave before it collapses.

Import Gods

1,500,000 knowledgeRoman

Small gods are portable luck, and who doesn't need extra luck?

Requires

adjacent discovery researched; PopulationByLevel Mercators ≥ 1

Unlocks

Statuettes Export

Ludus

1,500,000 knowledgeCeltic

The pieces click just as pleasantly on sandarac wood beyond the sea.

Requires

adjacent discovery researched; PopulationByLevel Aldermen ≥ 1

Unlocks

Latrunculi Set Export

Household Shrines

750,000 knowledge

How can a neighbourhood not prosper, if it hosts an army of Penates?

House Rules

750,000 knowledge

The rules are what we make them.

Curio Research

gate

Build 1 Caelator and 1 Latrunculi Workshop and generate at least 5000 Knowledge.

Requires

Caelator ≥ 1; Latrunculi Workshop ≥ 1; Knowledge ≥ 5000

Obsidian Mining

1,500,000 knowledge

Strike the vein, but hold your breath.

Unlocks

Obsidian Mining

Thermopolia

11,800 knowledge

Whether it's doomsday or not, fast food just is awfully convenient.

Daring Research

gate

Host an Amateur, Quadriga or Imperial Race and generate at least 10,000 Knowledge.

Requires

Knowledge ≥ 10000

Hippodrome Plans

128,000 knowledge

Where sand meets the arcades, rich and poor cheer in unison.

Unlocks

Hippodrome

Go the Distance

220,000 knowledge

Now we know when to rest.

Unlocks

Go the Distance

Speed Limits

360,000 knowledge

Whatever tips your cart.

Unlocks

Speed Limits

Character Study

220,000 knowledge

The one who should be holding the reins is the one you can trust to show up.

Unlocks

Character Study

Mass Tryouts

750,000 knowledge

Now that's what I call a high turnover.

Unlocks

Mass Tryouts

Sprint at a Gallop

220,000 knowledge

Not fast enough to outrun Occasus...

Unlocks

Sprint at a Gallop

Mentorship

3,000,000 knowledge

Given time and good tutelage, the student outshines the master.

Prestigious Research

gate

Win an Imperial Race and generate at least 15,000 Knowledge.

Requires

Knowledge ≥ 15000

Tireless Training

750,000 knowledge

Figs, hot water and puffs of sparsiones keep them moving.

Best of the Rest

1,500,000 knowledge

A good mentor helps Hector become Herakles.

Unlocks

Best of the Rest