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Millennia | Update 4

Hello there! Update 4 is now fully released. The build number is 1.0.20480.F. The update contains highly requested balance changes as well as a new Quality of Life feature, "Game Speed," which allows you to play at different speeds if you prefer a faster or slower experience. Here below is also our updated Roadmap!

Link to 2024 Roadmap image

This update also marks the last one before the traditional summer break, as we call it in Sweden. The next update (Update 5) will release alongside the first DLC, "Ancient Worlds," sometime in Q3. We will provide more information about that in August. We hope you enjoy this update and see you after the summer! Now let's get into the changelog!


[h2]Update 4 Changelog[/h2]

[h3]Featured Changes[/h3]

  • A new Nation default has been added – South Korea (defaults to “careful” AI personality and a new Age III: Arts XP Starting Bonus).

  • A new Challenge Mode has been added as a Game Rule. Selecting Challenge Mode adjusts a number of defaults.

Age of Blood – Barbarian Warlords spawn with an entourage.
Age of Plague – Outbreaks are more likely.
Age of Intolerance – Diplomacy penalties for Nations with different Religions are increased.
Age of Heresy – The Crisis charge is faster and more Cultists spawn at the start of the Age.
Age of Ignorance – More Rebels appear when using Domain Powers that reduce Tech costs.
Age of Dystopia – Riots are more likely.
Age of Visitors – Additional Motherships spawn per Region at the start of the Age.
Age of Conquest, Harmony, Generals, and Singularity – Victory requirements are more difficult.

Also – Chaos in the Challenge Mode has been modified so that it is (effectively) “doubled.” By default, you have 100 points of Chaos before a Chaos Event can occur and every Chaos point above 100 increased the chance by 1%. With Challenge Mode, Chaos Events are possible after 50 Chaos has accumulated and each point above 50 is a 2% chance of a Chaos Event.
  • Added new Game Rules to adjust the speed of the game. In Faster, the costs of Tech and Production costs are half the default amount. In Slower, Techs are twice the default cost and Production costs are 150% of default. The Faster (Normalized) option leaves Ages 1 and 2 as they are (as they are already compressed relative to later Ages) and introduces the speed increase during Ages 3 and 4.

(A number of other factors are also adjusted for the speed settings, including territorial expansion speed, rate of Culture Power gain, Eureka effects, Vassal population growth, when Barbarian Units upgrade to more powerful versions.)



  • Related to Game Speeds, Turn limit for each speed setting is as follows:
    • Faster (Normalized) - 350
    • Faster - 250
    • Standard - 500
    • Slower - 900
  • Added a new map – Three Continents. This new map generates a world with starting positions divided between three different continents.

  • Events for Barbarian Camps, Expeditions, Quests, Landmarks, Unrest, and Tribal Camps have new art.










  • Made a heap of balance changes (see below for details).


[h3]Balance[/h3]

[h3]PLEASE REMEMBER THAT BALANCE CHANGES WILL ONLY APPLY TO NEW GAMES.[/h3]

  • Changed Oath of Fealty to a Domain Power, added a cooldown (3 turns) and progressive Government Domain XP cost.
  • Added a cooldown (3 turns) to Clone Pod (Visitors) and Visa Sponsorship (Finance) Domain Powers.
  • Changed the Communist Government Soviet Farms Ideal bonus from +2 Food and +2 Ideology when worked to +4 Food and +2 Ideology per turn (does not need to be worked).
  • Changed the Communist Government Soviet Housing Ideal bonus from +2 Housing and +2 Ideology when worked to +4 Housing and +2 Ideology per turn (does not need to be worked).
  • Changed the Communist Government From Each Ideal bonus from +1 Production for the Soviet Factory per adjacent Mining Improvement to +2 Production per.
  • Changed the Communist Government To Each Ideal bonus from +1 Ideology for the Soviet Factory per adjacent Mining Improvement to +2 Ideology per.
  • Age of Transcendence now increases Social Fabric maximums to 15.
  • Age of Revolutions now spawns fewer Rebels per Region if the Region has no Unrest when the event fires. (The same amount of Rebels spawn if the Region has “Protests” -- at least 30 Unrest.)
  • All Age 9 tech costs have been increased by 200 Knowledge.
  • Added Workable Power Cost (2) to the Concrete Plant (try it out, Gemai).
  • Increased Soviet Factory throughput, now converts 4 Steel to 4 Power Tools (increased from 2-to-2).
  • Reduced the amount of Food from Delicacies from 10 to 6 (now on-par with Flour instead of Bread, with bonus Luxury on top), reduced Luxury from 4 to 2.
  • Reduced the amount of Luxury from Artwork (deployed Artists) from 4 to 2.
  • Increased the amount of Luxury from Jewelry from 2 to 4.
  • Increased the amount of Luxury from Cigars from 2 to 6, increased Wealth from 6 to 12.
  • Reduced efficiency of Levy Project (1 IP for every 5 Production to 1 per every 10).
  • Reduced efficiency of Treatise Project (1 Knowledge for every 10 Production to 1 per every 15).
  • Reduced efficiency of Political Campaign Project (1 Ideology for every 4 Production to 1 per every 10).
  • Reduced efficiency of Consumerism Project (1 Culture for every 3 Production to 1 per every 15).
  • Added Knowledge to each of the "Computers" converted Goods, equal to the value of Computers:
    • Data - 4 Knowledge, 4 Information
    • War Games - 4 Knowledge, 4 Warfare XP
    • Video Games - 4 Knowledge, 1 Culture, 15 Wealth
  • Removed Warfare XP cost from the Siege Defenses Unit Action.
  • Reduced base value and terrain bonuses for Wind Farm (3 power, +3 worked, +3 from Hills, +1 for each adjacent Water tile -> 2 Power, +2 worked, +2 from Hills, +2 if at least one adjacent water tile).
  • Reduced base value and terrain bonuses for Solar Farm (10 power, +5 worked, +10 from desert -> 5 power, +5 worked, +5 from desert).
  • Changed Laboratory Improvements to take in Books to produce Inventions or Analytics.
  • Increased the value of Inventions from 1 (+1 from Ideal) Knowledge to 2 (+2 from Ideal).
  • Increased the value of Analytics from 2 to 4 Knowledge.
  • Increased the value of Exhibitions from 4 Knowledge, 1 Culture, 25 Wealth to 6 Knowledge, 1 Culture, 25 Wealth.
  • Bribe now works on all Barbarian and Rebel owned units, including units spawned via Chaos Events and other Nation's Units that get converted when the Nation is eliminated.
  • If Siege Defense is used in range of multiple valid targets, it will now damage them all.
  • Standard Housing District in Age of Dystopia changed from providing 24 Sanitation to providing 8 Sanitation.
  • Trash Incinerator in Age of Dystopia changed from providing 6 Sanitation to providing 12 Sanitation.
  • Age of Intolerance Innovation Events no longer occur if you do not have a Religion.
  • The Inquisition Innovation no longer spawns Inquisitors at Vassals and Outposts.
  • The Republic Government's Open Markets Ideal now applies to Stores (Age 3), Container Yard (Age 7), and Fulfillment Center (Age 9).
  • Decreased Silicon Valley's Supercomputer cost reduction from 50% to 20%.
  • Decreased Intolerance's Religious School cost from 45 to 30 IP.
  • Increased Sultan's Courtyard Homes cost from 18 to 30 IP.
  • Increased Political Science's Welfare State Culture Power to better satisfy Needs (50 Food, 50 Housing, 50 Sanitation, 20 Luxury, 20 Education, 10 Power, 10 Ideology, 10 Information).
  • Reshuffled the order of Political Science's Ideals to move Welfare State to Tier 4 (Radicalization is Tier 2, Immigration Marketing is Tier 3, and Welfare State is Tier 4).
  • Increased Distribution Center from 4 Production 2 IP per worker, to 6/6, and reduced Power required from 5 to 2.
  • Added more International Finance Venture Capitalist targets (Age of Departure Corporate Office and Age of Kings Treasury).
  • Reduced Age of Plague Market Manager Wealth Regional Efficiency from +20% to +10%.
  • Added Taxation City Project to Age of Plague Market Capture Tech.
  • Moved the International Finance +10 Wealth bonus on Banks from Venture Capitalists to Secret Vaults.
  • Moved International Finance Compound Interest Ideal to Tier 4.
  • Increased the Prosperity gained from International Finance's Foreign Investment Power to 100% boost (from 50%).
  • Changed International Finance's Visa Sponsorship from a Domain Power that gives +1 Population to a single Vassal, to a Culture Power that gives +1 to all of your Vassals.
  • Reshuffled the order of International Finance's Ideals (Secret Vaults Ideal is Tier 1, Offshore Banking is Tier 3, Compound Interest is Tier 4, and Visa Sponsorship is Tier 4).
  • Increased Media Conglomerate Fireside Chat Unrest Suppression and Unrest reduction (from 2 Unrest Suppression to 10, and 30 reduced Unrest to 50), and increased the Unrest Suppression buff duration from 4 turns to 6 turns.
  • Reshuffled the order of Modernization's Ideals (Rapid Development is Tier 3 and Worker Cooperative is Tier 4).
  • Increased Celebrity's Red Carpet Gala Unit Action from 40 Arts XP to 100 XP.
  • Decreased Pop Culture's Influencer bonus to give 1.5 Culture Power meters (down from 2 per consumed Celebrity).
  • Increased Fashion Line Good from 1 Luxury, 1 Arts XP, 1 Wealth, 1 Innovation, and 1 Culture, to 6 Luxury, 1 Arts XP, 10 Wealth, and 1 Culture (removed Innovation).
  • Increased Silicon Valley Machine Learning buff for Computer Simulations to +2 Knowledge (from +1).
  • Silicon Valley Machine Learning Ideal also applies to War Games from Age of Generals.
  • Replaced Silicon Valley Great Firewall Ideal (granted +10 Unrest Suppression to Computer Factory Improvements) with new Worker Training Ideal that grants +6 Education Need to Data Goods.
  • Moved Great Firewall buff to a Silicon Valley Innovation.
  • Increased Silicon Valley Computer Scientists buff from +1 Specialists on Computer Lab Improvements when worked to +4 when worked (now also affects War Games Computer in Age of Generals).
  • Added +4 Knowledge, +3 Education Demand, and +1 Power Demand to National Aerospace Research Facility.
  • Reduced Space Center Education Demand to +2 (from +3).
  • Increased Communications Satellite Knowledge from 9 to 10, added +3 Education Demand and +10% Space Race Success Chance.
  • Increased Space Race Megaproject Wealth cost (from 300 per stage to 500) and increased the Culture Reward (from flat 100 per stage & 200 for final stage, to automatically filling the Culture meter per stage, and giving 2x Culture meter for final stage).


[h3]Gameplay[/h3]

  • Added three new Starting Bonuses – Age I: +Exploration XP (+5 Exploration XP), Age II: +Engineering XP (+5 Engineering XP), Age II: +Diplomacy XP (+5 Diplomacy XP).


[h3]UI / Art[/h3]

  • Revised the Quest marker.


  • Revised the UI shown at entry to a new Age. This now shows your place in moving into the Age and if you received the Innovation bonus for being first.


  • Revised wording on Starting Bonuses (bonuses that were “Start:” now use “Age I:” instead).
  • Added tooltips for the links at the bottom right of the Main Menu.
  • Added information regarding Outpost Specialization to Infopedia and tooltips.
  • Added Infopedia entry and tooltips for “Upgrade Lines.”
  • Updated information about Naval Bombardment in Siege Unit Infopedia and tooltip.
  • Added a help topic for Naval Bombardment that appears when you first unlock a Naval Siege Unit.
  • Added information to tooltip for Shogun’s Unit Actions.
  • Now show information about Chaos and Accumulated Chaos minimums in tooltip and Infopedia.
  • Renamed Age of Departure's Power Plant Improvement to the more accurate Ultra-Supercritical Power Plant (named after the standard categorization for certain high-end power plants). This prevents you from upgrading from a Mega Power Plant (Age of Dystopia) to a plain Power Plant (Age of Departure).
  • Now present a list of possible Outpost Improvements available at certain Outpost Specializations.


  • Updated tooltips, help topics, and Infopedia to reflect balance changes listed above.
  • Updated the flag for Brazil.
  • Added new Capital socket for Sanitation Bots.
  • Added new Capital socket for Construction Bots.
  • Added new Capital socket for Worker Bots.


  • Bonus chances of success in Space Race now show as percents in tooltips.
  • Adjusted the Game Settings UI.
  • Added new Capital socket for Subway.
  • The Divine Inspiration Ideal from Theologians now shows the amount for Arts XP generated per Population.
  • Now show build adjacency requirements on Improvements.


  • Added hotkeys (mappable, default are Q and E) for moving between Regions. Available when the arrows for moving between Regions are displayed.


  • Added a new icon for Museum to differentiate the Improvement and Capital Building.
  • Adjusted end of game UIs to prevent text overflow in some languages.


[h3]Bugfixes[/h3]

  • Fixed Theologians Divine Inspiration Ideal incorrectly stating that it applies only to Large Temples.
  • Fixed Specialists Age unlock tooltip just saying “Specialists.”
  • Fixed an issue where Space Race stages could still be completed after a Nation had lost its Space Center.
  • Warrior Priest Sacrifice Power can no longer be targeted on Regions with less than 3 population.
  • Fixed a number of Improvements that were not handled by Undo.
  • Fixed a number of Outpost and Town Specialization tooltips that incorrectly linked to National Spirit tooltips.
  • Fixed missing text about Outbreaks in Age of Plague.
  • Fixed additional spaces in Crusader Ideal descriptions in some translations.
  • Fixed an issue with Petroleum and Underwater Petroleum causing double entries in Infopedia.
  • Fixed an issue where certain Unit movement into locations under fog of war would cause the dissipation of the fog of war to appear very laggy.
  • Fixed an issue with the display of what is currently being built in the City view for a Region not being selectable and not showing a tooltip.
  • Updated elements of our terrain blending to correctly display certain Landmarks and terrain features. Also adjusted various terrain and features (mountains, rivers, Wild Rice) to work best with this change.
  • Fixed an issue with certain Units (like Cultists) not grouping into Armies with other Units correctly.
  • Fixed an issue where you could not repair some buildings (like the Pyramids or Colony Ship) using their in-world repair button.

[h3]Misc[/h3]

  • Added FPS Limiter and VSync options. After investigating reports of high GPU usage and uncapped FPS, we found that certain system setting configurations could override our existing frame rate limiter. We have added these options with the intent to resolve this issue for the affected players.

Millennia | Update 3

Hello there! Update 3 with Build Number "1.0.34.F" is finally here. We have also updated the roadmap image to include some of the features confirmed for Update 4, which is currently scheduled for release during June. (The Open Beta is just around the corner!)

Link to 2024 Roadmap image

[h2]Update 3 Changelog[/h2]

[h3]Featured Changes[/h3]
  • Added a Restart option. The ESC menu now includes an oft requested “RESTART”, which will re-launch the game with the same settings but a new map seed.
  • Added the Game Rules system. Much like the Restart options, the ability to set game rules is a frequent request. This is now available in Custom Game Settings.
  • Speaking of the new Game Rules system and things that are frequently requested – the first three options presented in Game Rules are settings that allow you to adjust the Barbarians. This is the initial implementation of the feature and new options will be added in future updates.
  • Added a new map – Ring. As the name suggests, this new map generates a ring-shaped continent with a large center sea. The starting positions generally mean that you have only two neighbors to really worry about (until someone gets wise with naval transport, anway).
  • A new Nation default has been added – Nigeria is now available.
  • Implemented an on-map razed Improvement indicator. Much like Improvement upgrades, this appears if one of your Improvements has been razed and allows easy repair of the Improvement.


[h3]Balance[/h3]

[h3]PLEASE REMEMBER THAT BALANCE CHANGES WILL ONLY APPLY TO NEW GAMES.[/h3]

  • The Pay Homage Innovation now adds +1 Government XP (in addition to +4 Wealth) to Farming Towns.
  • Catapult Bireme HP increased from 50 to 100.
  • Bomb Vessel HP increased from 50 to 100.
  • Galleon HP reduced from 60 to 50.
  • Voltaic Pile Power increased from 1 to 2, workable Power increased from 1 to 2.
  • Mercenary changed from 40 Attack, 32 Defense to 45 Attack, 35 Defense.
  • Mercenary spawn at maximum Veterancy level.
  • Mercenary Morale increased from 20 to 50.
  • Mercenary no longer Type: Ranged (this Unit is outside of normal Unit RPS), also no longer has combat bonus against Type: Line itself.
  • Privateer changed from 39 Attack to 47 Attack.
  • Privateer spawn at maximum Veterancy level.
  • Privateer Morale increased from 40 to 50.
  • Privateer no longer Type: Line (this Unit is outside of normal Unit RPS).
  • Old Guard Grenadier HP reduced from 60 to 50.
  • Old Guard Cavalry HP reduced from 60 to 50.
  • Drone Carrier HP reduced from 90 to 50.
  • Knowledge value of Exhibition increased from 3 to 4, removed the additional Worker slot so that you can make only one Exhibition.
  • Jaguar Unit promotion cost set to 50 XP, regardless of Unit being promoted from.
  • Changed Electricity Ideal of Inventors National Spirit to make Inventions worth an additional Knowledge, removed the +1 worked Inventions.
  • Added scaling cost to Guild Training.
  • The State Religion Office in the Age of Harmony now provides 1 Arts XP (instead of 1 Diplomacy XP) and generates Faith (.5 per population with the State Religion) instead of generating additional Diplomacy XP.
  • Reduced Power Score value of Vassal Population from 10 to 8 per Pop.
  • Increased Power Score value of Towns from 10 to 15 per Town.
  • Seismic Imaging Technology now rewards Specialists (was rewarding IP).
  • Subway Capital Building now rewards Specialists (was rewarding IP).

[h3]Gameplay[/h3]
  • Using an Archangel Laser Strike now negatively affects your diplomatic opinion with the targeted Nation. The reduction is based on whether you are de-shielding, damaging, or destroying a region, with the last of those being almost unrecoverable, diplomatically.
  • All custom Nations were selecting the Revolutionary personality; these now select a random personality at game start.
  • Adjusted Chaos so that it cannot accumulate unlimited negative amounts. Now capped at -5 income and -20 accumulated Chaos. (Propaganda can no longer be used if negative.)
  • Lighthouse of Alexandria is now a possible Innovation Event reward (Age 3).
  • Renamed the Energy Good (generated by things like Power Plants, Deep Sea Hydrothermal Generators, Aether Refineries) to “Stored Energy.”
  • An indication is now shown on the Capital nameplate if there is an Outbreak in the Region.
  • If a Nation has been eliminated, killing any of their Units that were left behind no longer counts for progress toward the Age of Blood.
  • The previously disabled Barbarian Resurgence Chaos Event (disabled because multiple AI Nations getting them could result in unfortunate circumstances for players), have been fixed, re-enabled.
  • When viewing attack range for a City Attack, we no longer show Region nameplates (to avoid making enemy Units that could be attacked obstructed by display of the Region name).
  • Previously, Conquest would reset Integration at a Vassal. That is, you might Vassalize a Minor, wait and invest in Integration until you can convert it into a Region, have an enemy conquer this Region, liberate that Vassal immediately after losing it, and you’d then control a Vassal that needed 50 Integration again before you could restore it as the Region it was previously. This has been changed so that the Integration required scales over time – if you re-capture a Vassal that was taken from your Nation shortly after it was lost, it now requires very little to reintegrate.
  • Noncombatant Units (like the Merchant) can no longer cause “Under Siege” conditions.
  • Changed Biplane Bomber, Airship, Propellor Bomber, Jet Bomber, Low Orbit Photon Bomber, and AI Bomber to select targets randomly.
  • Removed the Biplane Fighter from Age of Harmony.
  • Merchants, Envoys can now be deployed from anywhere within a Region, not only when adjacent to a Capital City.
  • Deployed Merchants now generate wealth for the host where they are deployed (30% of what they gather for their owner).
  • Disabled the Siege Defenses Unit Ability on Naval Units (this is designed to work with some things that are not yet in the game and is currently not worthwhile compared to just attacking directly).
  • Changed how Bribe works. Previously, this applied to specific Unit types (the Barbarian Units). It now looks for ownership. As before, you cannot Bribe Aliens (or Rogue AIs), but you can now use Bribe on a variety of Units that can end up under Barbarian control. Notable here is that the Units remaining when a Nation is defeated switch to “Barbarian.”
  • Landmarks in your territory were not applying the intended bonuses. They do now.
  • Promote Cultural Exports was unlocked in Age 2, now unlocked in Age 1.

[h3]AI[/h3]
  • Adjusted AI to better understand how to build Supermonuments.
  • Adjusted AI to be smarter about attacking when it has noncombatant Units in an Army.
  • Made some changes to how the AI approaches getting Knowledge and using Knowledge-related Culture Powers like Eureka. Effectively, at Adept and below, this makes the AI Nations take longer to progress into the next Age.
  • Improved AI in Age of Departure, now more competitive in this Age.
  • Fixed and issue with AI’s use of Merchants. Previously, they would consider Vassals at full Prosperity as targets for their Merchants.

[h3]Multiplayer[/h3]
  • Fixed an issue in the multiplayer lobby that caused problems when players were using nicknames (or changed their Steam name).

[h3]UI / Art[/h3]
  • Updated tooltips related to Technology discounts when other Nations have researched the same Tech for clarity.
  • Added mention of next level of Unrest in the Unrest tooltip.


  • Expanded Diplomacy tooltips to show what will happen when going to war when Alliances are involved.







  • Revised numerous Chaos and Innovation Events, improved related text.
  • Sorted and categorized the start bonuses to make it easier to find what you’re looking for.
  • Tooltips for Chaos and Innovation Events now include explicit mention of the percent chance of an Event on the next turn.
  • Revised tooltips for Religion; now much clearer about who follows what.
  • Added display to show if Apprentices (from the Great Masters National Spirit) have been recruited at a location
  • Added a new mappable hotkey for ending the turn. This allows you to essentially move that functionality off of the existing key (assigned to “Enter” by default). When mapped to a different key than the existing “next”, you can quickly step through a number of Armies with multi-turn moves without accidentally triggering the next turn.
  • Added hover effects to some UI buttons in the Infopedia and new Age UI.
  • Improved how tents are displayed (for Units that have moved during the turn). Adjusted tent and Unit placement so that the tents and Units do not intersect. Added new idle animations for some Units.
  • Adjusted the location of the “Destroy Vassal” button, changed it to red.
  • Adjusted National Spirit Ideal tooltips to not repeat what is one the Ideal.
  • Adjusted the display of turns remaining in tooltips showing buffs.
  • Added animation to Treaty button in Diplomacy.
  • Adjusted Goods icons on the map to not block movement or selection clicks.
  • Added visual effects that appear on Units that are created because of a Chaos event to make it more obvious where these came from.
  • Changed Archangel attack so that the visuals are not hidden under fog of war.
  • Updated a number of Unit tooltips to use “Unit Type:” formatting consistently.
  • Made Siege a “full” Unit type and applied this to relevant Units (as they behave differently than Type: Support), added Infopedia entry on Type: Siege.
  • Created a Commando Unit type and applied this to Mercenary / Privateer Units (as they behave differently than standard types).
  • Many Unit sub-types are now shown in the Unit tooltips, including Armored, Assault, Projectile, Siege, Militia, Alien, Barbarian, Rogue AI, Cultist, Naval, Transport, Air Fighter, and Air Bomber.
  • Added a new Power Score entry to the Infopedia, added references to Power Score in several places.
  • Region Capital nameplates no longer stop map scrolling when passed over.
  • Layout fix for Clone Farm.
  • Moved display of game settings to a pop-up (instead of showing this in the Options Menu itself), and added to the details shown.
  • Outliner state now persists between game sessions.
  • Changed the Game Log so that it starts with the most recent entry at the bottom.
  • Added Noncombatant Infopedia entry and tooltips.
  • New art for Dark Forest Landmark.
  • New art for Tropical Rainforest Landmark.
  • Added warnings and notification in Age of Revolution spotlight the Rebels.
  • Renamed the Museum in Age of Discovery to “Museum of Archaeology” to make it distinct from Museum appearing in Enlightenment.
  • Added a notification for the Open the Gates Domain Power to let a target Nation know this has happened to them.
  • Adjusted position and color of ESC menu buttons.
  • Instead of showing game information (like map seed) in the ESC menu, there is now a Game Information button that opens a panel with game information, including the new game rules.
  • Changed how the Combat Alerts appearing in the right-side column function. Previously, selecting these would open the Combat Viewer for the related fight. Now, selecting these jumps to the location of the combat on the map, making what happened easier to see.
  • Added a new icon for Regional Efficiency when showing a debuff (the green icon looked like a buff in all cases).
  • Changed Coup “buff” to use the Chaos icon.

[h3]Bugfixes[/h3]
  • Fixed an error with the tooltip on Docks with the Colossus buff.
  • Fixed an error with the tooltip shown when attempting to rebuild destroyed Towns that are not adjacent to your territory.
  • Fixed some errors in translation of German loc lines.
  • Fixed Dedicate Monument (Arts) using the wrong icon.
  • Fixed air Units not being destroyed when the Town they are stationed at is destroyed (by Archangel strikes, for example).
  • Removed “can be built on” in tooltips where unnecessary.
  • Fixed water Regions (Utopia) showing expansion when they should not.
  • Fixed air overlay display showing incorrect information when air Units with different move ability were selected.
  • Fixed valid / invalid moves showing incorrectly on the air overlay in some cases.
  • The Sundarbans Landmark now correctly appears only once.
  • Fixed error with Castle Armory and Castle Town having the wrong terrain requirements (switched these so that Castle Town requires Grassland).
  • Fixed an issue where movement range was not shown correctly in some cases when selecting an Army with zero movement points.
  • Fixed text overflow issue with tooltips for key remapping in some languages.
  • Fixed an issue where other progress toward victory for other Nations was not showing correctly if you had not entered the Age already.
  • Fixed Unit upgrades resetting movement status (which allowed double moves / attacks).
  • Fixed tooltip on Rush to be consistent.
  • Defending air Units no longer get terrain bonuses.
  • Fixed an issue where attacking (destroying) broken enemy Units always caused a move into the tile where the enemy Unit was located.
  • Fixed an issue where banners and Unit formations did not correctly show that they had already moved during the turn after reloading a savegame.
  • Fixed unlocalized text appearing in the tooltip for Space Center in some languages.
  • Fixed an issue with incorrect label appearing on the Vassal UI.
  • Fixed Divine Spark Innovation to give +1 Innovation income instead of +1 Innovation on-build to the Inventor’s Lab.
  • Fixed typo in the Seasoning Innovation.
  • Added missing tooltips for Tropical Forest and Dark Forest Landmarks.
  • Fixed many instances of Type: Support Units being shown as Type: Ranged.
  • Fixed the Crossbow Guard targeting incorrectly (it was picking targets like a Line type Unit).
  • Fixed the Khan targeting incorrectly (it was picking targets like a Support type Unit).
  • Corrected references to Artillery in Infopedia.
  • Corrected incorrect starting bonus information for Archer, Warband, and Scout.
  • Fixed typo in Diplomacy tooltip.
  • Corrected Diplomacy Upgrade Line Buildings tooltips.
  • Corrected Call Banners Domain Power tooltip.
  • Corrected Unjustified War Diplomacy tooltip.
  • Clarified the Trade Help Topic to explain using Envoys to initiate Trade.
  • Fixed “Has Embassy” tooltip.
  • Added nested tooltip to Create Shoen Ideal.
  • Corrected Outpost Infopedia entry.
  • Fixed Great Library tooltip to include count of Open Borders.
  • Corrected Pyramid Temple tooltip.
  • Corrected Education Help Topic and several related tooltips.
  • Fixed an issue that could occur with restoring defaults keybindings in some situations.
  • Corrected an issue that was causing compounding growth in the value of some Buildings (Congressional Halls, Diplomatic Facility).
  • Reduced the flickering seen in Multiplayer when a player joins.
  • Fixed issue with the Think Tank Capital Building ceasing to provide benefits of the building.
  • Fixed an issue with targeting noncombatant Units never causing the attacker to move into the hex occupied by the noncombatant.
  • Fixed naval Units attacking Units on land incorrectly requiring Movement sufficient to (theoretically) move into the hex occupied by their target to attack.
  • Fixed an issue where the undo UI would not refresh in some circumstances.
  • Fixed an issue with keyboard input not being blocked correctly in some situations (which could cause things like closing menus accidentally).
  • Fixed an issue that would allow AI Armies to overstack under some conditions, causing them to form and use Armies larger than possible for the current Age.
  • Fixed an issue where high “turns to complete” numbers could cause display of the count to show incorrectly.
  • Fixed an issue that could cause a missing string to appear for an AI Nation’s personality in Diplomacy tooltips.
  • Fixed some situations where right-clicking to dismiss a combat notification could cause a move order.
  • Fixed an issue with the Horses tech not applying Influence gain correctly.
  • Fixed progress being displayed in the Faction screen showing up at the wrong location on the progress bar.
  • Fixed an issue where Units that had been moved and were displaying their “exhausted” state would return to showing their normal state when the map was scrolled away and back.
  • Corrected tooltip for World Fair.
  • Fixed issue with tooltip for Horses Tech expansion buff.
  • Fixed an issue with combat notifications on the map sometimes conflicting with the Goods icons on the map, which prevented the combat notifications from being dismissed.
  • Fixed some conditions where UI could fail to update correctly when Regional Efficiency was changed.
  • Transporting Units into a Capital now updates Unrest correctly (using Undo also reapplies Unrest correctly).
  • Fixed several scenarios where you could avoid being at War in an Age where everyone is supposed to be at War (such as Blood) by using Diplomatic options immediately before the Age.
  • Fixed some cases where Units killed by air attacks would continue to appear on the map.
  • Sawmill line Improvements (Forester, Saw Pit, Saw Mill, Powered Saw Mill, etc.) now correctly supply a bonus to the Lumber Town Specialization.
  • Fixed a variety of errors in localized text.
  • Fixed a case where the tooltip for Under Siege could show an incorrect value.
  • Fixed an issue where rush completion did not cause “Idle City” to show.
  • Fixed tooltips for Age 6 Chaos Events (Learned Ones and Stubborn Students).

[h3]Misc[/h3]
  • Performance improvements to decor spawning.
  • Performance improvements around selection and next action button updates.
From us at Paradox Interactive & C Prompt Games, we hope you love the game!

Millennia | Publisher Week Sale

Hello there!

Community Ambassador Firefly here happy to report Millennia will be on sale as part of Paradox Interactive Publisher Week!

It's the perfect time to try out the game or for a friend.

-10% off Millennia

-10% off Millennia: Premium Edition

Game Hotfix - Build Number: 1.0.23.F

Hello there! We are releasing a small hotfix for the game. This hotfix is save compatible, but it will change the build number to 1.0.23.F.

[h3]Bugfixes[/h3]
  • Fixed an issue where anyone playing the game with European style regional formatting (ie, 2,2 vs 2.2), when getting a treaty with decimal values will instead get a zero value treaty.

Millennia | Update 2

Hello there! Katten here. It's time to go over the updates to the Roadmap as well as what is inside Update 2, which is now available for everyone to play!

The roadmap itself has seen some minor changes, foremost being an update to what is inside Update 2, along with one confirmed addition for Update 3: the ability to "Quick Restart" your games by pressing ESC while inside your game > Quick Restart. This feature reloads your game with the custom settings you previously chose. "How you quick restart might change"
Link to 2024 Roadmap image

Now onto Update 2 with Build Number: 1.0.22.F! We've implemented the new Hotseat system, eliminating the need for port forwarding, and allowing you to simply invite your Steam friends! Consequently, the old MP Guide is now obsolete. But that's not all; there's a whole bunch more to discover, so keep reading below and enjoy playing Millennia! See you later this month for Update 3!


[h2]Update 2 Changelog[/h2]

[h3]Featured Changes[/h3]

  • Implemented new hotseat multiplayer functionality -- this replaces the system previously in place, which has been removed. When hosting, you can now click Invite in the upper right of the Cloud Hotseat UI to see your Steam Friends List and select a friend to invite. (You can also invite a friend by right clicking and selecting Invite to Game through the Steam Overlay.) If your friend is also running Millennia, not in and active lobby, and not loaded into a game already, they will receive a pop-up invite. Alternately, you can invite players who are not in your Friends List by sharing the Game ID displayed on the left of the Cloud Hotseat UI. Invited players then join the game by selecting Join and using the ID provided to them by the host.
  • Added additional indications of growing Unrest. Icons now appear below the Capital City nameplates to call attention to growing unrest in the Region.

These icons are also shown in the Outliner.



  • Added display of “exhausted” Units in the Outliner. When Units have no remaining Movement for the turn, their icon appears dimmed.


  • When enemy Units move inside your territory, a warning of their presence now appears in the Outliner (exclamation point). (This is shown if you are not already Under Siege.)


  • Added a key remapping system. This is available in the Controls tab of Options.
  • Expanded the Nation Builder. Functionality has been added that allows the removal of player-made Nations from within the Nation Builder. Additionally, it is now possible to modify most aspects of existing custom Nations from the Nation Builder. Flag selection has been changed to a grid display.
  • Revised Improvement tooltips. These now include better information for where Improvements can be built and what they produce.




  • Added Canada as a new default Nation (default Personality is Cooperative and default Starting Bonus is Scout Unit).


[h3]Balance[/h3]

[h3]PLEASE REMEMBER THAT BALANCE CHANGES WILL ONLY APPLY TO NEW GAMES.[/h3]

  • All Outpost Improvements except for Trade Post and Trade Factory have a limit of three per Outpost.
  • Colony Outpost Specialization now provides +2 Culture (as opposed to +2 Trade Goods which are worth +2 Culture).
  • Replaced the Culture bonus and gather from Castle Town Improvements with +3 Wealth and +1 Wheat.
  • Limited the Mercenary Training Camp to Colony Outposts only.
  • Made some tweaks intended to make it easier to meet Faith Needs in new Regions when you have a Religion; the base Capital bonus of the Fundamentalist Government provides 2 Faith, increased the amount of Faith provided by a Temple to 2, reduced the cost of constructing a Holy Site from 160 to 140 Production.
  • Reduced the number of Monuments needed to trigger Age of Monuments from 3 to 2.
  • Changed Shells (the Ideal) from Early Seafarers to be additive; instead of replacing Fish Goods, you keep existing Fish and gain additional Shells (the Good).
  • The Tyrian Purple Ideal in Early Seafarers swapped places with Lighthouses, making it available earlier.
  • Reduced the Hunting Grounds Ideal in Wild Hunters so that Bow Hunters are Crossbow equivalent instead of stronger.
  • Increased Stonecutter Improvement output from 1 Stone -> 1 Stone Blocks to 2 -> 2.
  • Narrowed the Victors Ideal of Raiders to affect only Raiders instead of all pre-gunpowder Units.
  • Increased value of Mead from 2 Food to 5.
  • Changed Castle Town Improvement terrain requirement from open terrain to grassland.
  • Updated Tapestry Weaver to take in Cloth or Textiles, instead of only Cloth.
  • Increased Remote Camp Exploration XP reward value (from 40 -> 60 in Age of Kings, continues to scale in later ages).
  • Moved Remote Camps earlier in the Explorers tree (shifted Tier 1 Fearsome Appearance to Tier 2 and Veteran Explorers to Tier 3).
  • Updated Tinker Improvement to convert Ingots into Machines instead of Tools.
  • Increased Machines consumed IP value from 4 -> 5.
  • The Crusaders Headquarters now gives all Knight Units a +5 Defense buff in addition to x2 Attack bonus against Religious Heretics.
  • Reduced Daiymo and Shogun Regional Efficiency bonuses (from 10% -> 5% from Daimyo, and 20% -> 10% from Shogun Innovation).
  • Reduced the Samurai Combat Bonus gained when in an Army with a Shogun (from 50% -> 20%).
  • Reduced Concrete value from 4 Production, 4 IP to 3 / 3.


[h3]Gameplay[/h3]

  • Outpost Specializations can now build Improvements from previous Specializations.
  • Trade Posts can now be upgraded to Trade Factories within Castles.
  • Added a new Event that is used if a revolt would cause you to lose your only remaining Region.
  • Changed the victory condition of Old Ones to having 50% of the global population and eliminating a third of the remaining Nations (the intent is to shorten the time between when a Nation has effectively won this Age and when Victory is declared).
  • Previously, any Unit (other than your own) within your borders would raise Unrest. This was changed so that only enemy Units within your borders increase Unrest.
  • Temples now start to generate Faith after a Religion is adopted.
  • Now reset Expedition chances after failing an Expedition.
  • Firing the Archangel space laser at another Nation is now considered an act of war.
  • Envoys no longer need to move next to a Capital to open negotiations; they can use their relevant abilities from anywhere inside another Nation’s borders.
  • Eliminated Nations are no longer counted in some calculations (for example, Global Cooperation providing Social Fabric Tolerance per allied Nation).
  • The Allow Custom Nations in Random option in singleplayer games now allows Custom Nations to be explicitly picked, but not randomly picked in various contexts.
  • When unchecked:
    • Custom Nations should not be chosen for AI players.
    • Custom Nations can be picked from the dropdown.
    • Custom Nations should not be randomly picked for any player set to Random.
  • When checked:
    • Custom Nations can be chosen for AI players.
    • Custom Nations can be picked from the dropdown.
    • Custom Nations can be randomly picked for any player set to Random.
  • In all cases:
    • Randomly picked Nations will check for flag conflicts with all previously picked Nations.
    • In a multiplayer lobby, Custom Nations will not be picked randomly nor will they be in the dropdown for any player.

[h3]AI[/h3]

  • Adjusted AI to more frequently make decisions that avoid steering into Age of Plague.
  • Improved AI’s handling of Vassals. Vassals now properly consider the Goods they would produce if they were a Region when deciding what Improvements they should build.
  • AI players and Vassals are more likely to build an Improvement on a tile that provides it bonus goods than on tiles that do not (e.g. putting Farms on Wheat tiles)


[h3]UI / Art[/h3]

  • Replaced prior Cloud Hotseat multiplayer UI and information with content for the new system.


  • Adjusted the UI used for “mega projects” to provide a better indication of rewards. (Without this, some of the options in Space Race appear to flat-out negatives.)
  • Added a new maximum member count slider to options. This is an option for performance that allows adjustment of the number of individual models used to represent a Unit on the map or in the Combat Viewer. (This is visual only and the setting has no impact on gameplay.)
  • Updated Infopedia and tooltips related to Regional Efficiency to clarify that it does not affect Goods.
  • Updated the tooltips for numerous Ideals to clarify which Building Upgrade Line they apply to.
  • Adjusted the Scout Unit Abilities. Scouts now have a “Promote to Hero” Unit Ability during Age of Heroes to reduce confusion over Leaders vs. Heroes.
  • Adjusted the Information Need tooltip to show population required for Information to become a Need.
  • Expanded Infopedia for Quests.
  • Added additional information to tooltips and Infopedia entries on Hero, Berserker, Corrupted AI Core, Colony Ship Launch Pad, Archangel Satellite Array, City Shield, Alien Mothership, Alien Invader (land and water), Riot Police, Aether Harvester, Aether Refinery, Alchemist, Conquistador, Monument, and Plague Doctor to clarify their use.
  • Added Diplomacy status to the Diplomacy tooltip.


  • Added display of map name and size to the display of map seed.
  • Now display an effect on Units spawned by Chaos Events to make it more obvious what has been added to the world by the Event.
  • Added display of bonuses to Landmark tooltips.
  • Adjusted Unit tooltips in the Combat Viewer to show Tactics.
  • Added Domain tooltips in the Culture Power UI.
  • Added itemized display for Needs Satisfaction in the Region info panel.


  • Victory Age tooltips now shows progress of other Nations.


  • Revised From Each, Their Ability and To Each, Their Need Ideals and related Ideology tooltip information.
  • Clarified targeting message when placing World Fair.
  • Made display of “Unit Type:” consistent; changed Militia, Alien, and Armor Types to use the same format.
  • Made references to “Capitals” or “Regional Capitals” consistent throughout.
  • Adjusted where the tooltip on the “Next” button in the bottom right displays (this was getting in the way for some players).

[h3]Bugfixes[/h3]

  • Fixed the Temple Building not being affected by the Theologians Ideal from Divine Inspiration (which affects other buildings in the same building line already).
  • Fixed missing text issue for tooltips for Goods tiles, revealed by recent tooltip improvements.
  • Fixed a text overflowing with very long player names in the Cloud Hotseat UI.
  • Fixed Internal Combustion Fuel and Agnosticism Innovations having no tooltip.
  • Fixed Events in Age of Monuments that could trigger under bad conditions (like lost progress on a Super Monument after it had been completed).
  • Fixed an issue with Explorers’ Guild going up when Expeditions are failed.
  • Fixed an issue with certain buildings unlocked by Governments or National Spirits not appearing in the Infopedia.
  • Fixed Oath of Fealty to affect underwater Regions in Age of Utopia.
  • Fixed a number of incorrect Swedish city and town names.
  • Updated movement logic and pathing visualization to fix a number of issues, including incorrect presentation of air attack range, units excluded from showing attack range in certain diplomatic conditions, Envoys showing invalid attack and expel icons, air Units showing incorrect targets for attack, Envoys being able to target other Envoys, and naval Units not showing land attacks correctly.
  • Found and fixed an issue with AI Nations not correctly receiving and using Chaos and Innovation Events.
  • Found and fixed an issue with the targeting system (the way things like Events are or Diplomatic Actions are directed at a particular Nation).
  • Found and fixed an error where loading saves could cause issues with random values; the RNG stream should now be more consistent across save / load boundaries.
  • Corrected Merchant tooltip to specify that the Unit is deployed to improve Vassal Prosperity.
  • Fixed the progress message in Age of Monuments showing many decimal places.
  • Fixed Alien Invader Navy having incorrect tooltip.
  • Fixed World Fair tooltip using “Research” instead of “Analytics.”
  • Fixed typo in Pangea tooltip.
  • Fixed a scenario where “undo” did not work properly.
  • Fixed splinter Nations not showing on the minimap.
  • Tooltip with diplomacy breakdown for a Nation now shows on the main Diplomacy UI (instead of having to select a specific Nation first).
  • Fixed some situations that could cause buff durations to show as “-1.”
  • Fixed an issue where small islands map could cause graphical corruption.
  • We corrected an issue with the AI players and Chaos and Innovation cards -- this is good. However, this created a scenario where multiple AIs could get the Barbarian Resurgence Chaos Event at around the same time, which occasionally produced a large number of Barbarian Warlords visiting player Regions – this is bad. This Event has been disabled for now. (If you are restoring a save in Age 3, you could still have this Event.)
  • We found some issues with multi-turn movement (in particular, related to multi-turn movement, undo, and transports). This has been fixed.
  • Fixed the Infopedia link for Printing Press.