Developer diaries

Developer diaries are articles, sometimes accompanied by videos, published by Paradox to describe the game design in detail

Art of War

All developer diaries about Art of War expansion, patch 1.8 and patch 1.9.

Title DescriptionPatch
Achievements, Auto Transport and South AmericaTenth dev diary about automated fleet transport, miscellaneous mechanics changes, new achievements and the map changes in South America, East Africa and south Russia1.8
Army Builder, Rebel Relocation and ChinaFourth dev diary about army management, rebels on islands, and East Asian map changes1.8
Client States, Allied Transports and Central AsiaSixth dev diary about custom client states, allied transports, improved battle displays, and the remapping of Central Asia & Siberia.1.8
Diplomacy, Catholics and Southeast Asia & IndonesiaFifth dev diary about diplomacy, revamping the Curia, and map changes to Indochina and Indonesia1.8
Disasters, New Ideas and Other Free FeaturesNew disasters system and the idea groups added in the patch.1.9
Fleets, Autonomy & IndiaA detailed dev diary of the third major expansion1.8
Marches, Unrest & PersiaSecond dev diary about vassals, revolts, and Persian map1.8
Military Cooperation, Tradegoods & West AfricaThird dev diary about directing allies in war, new trade goods, and West African map changes1.8
New AchievementsInformation about 20 new achievements that will be added in the patch, mostly focusing on countries that currently lack of unique achievements.1.9
OtherProvence1.8
OtherMogadishu1.8
OtherTrebizond1.8
OtherGeorgia1.8
OtherMajapahit & Sunda, Afghanistan, Wallachia1.8
OtherCroatia, Cyprus, Navarra1.8
OtherAztecs, Dahomey, Kanem Bornu1.8
OtherTheodoro, Silesia, Danzig1.8
OtherKrakow, Ajuuraan, Ryazan, Tver1.8
OtherYaroslavl, Pskov, Tarasca1.8
OtherSmolensk, Bosnia, Moldavia, Air1.8
OtherMossi & Yatenga, Sokoto, Moldavia1.8
OtherMontenegro, Romania, Athens, Gotland1.8
OtherFinland, Albania, Polotsk, Perm1.8
OtherMughals & Timurids, Ashanti, Mapuche, Inca1.8
OtherEngland, Castile, Portugal, Austria (changes)1.8
OtherChimu, Muisca, Chachapoya, Teutonic Order, Bulgaria1.8
OtherKiev, Naxos, Tapuia, Pomerania, Kazan1.8
OtherArmenia, Wales, Hausan, Guarani, Charrua1.8
OtherCircassia, Lan Xang, Khiva, Bahmanis, Habsan, Jaunpur, Hamburg1.8
OtherClient State, West African, Andean, Aymaran, Tupi1.8
OtherRuthenian, Caucasian, Central Indic, Pacific Northwestern, Sumatran, Swahili, Guajiro, Siberian, Mesoamerican1.8
Religious Leagues, The Reformation and the Near EastSeventh dev diary about the new HRE and reformation mechanics, and map changes in the Near East1.8
Revolutions, 1618 Bookmark and North AmericaNinth dev diary about the French Revolution and revolutions in other countries, the 30 Years War bookmark, new historical events and the map changes in North America1.8
Sorties, Terrain and the MaghrebEighth dev diary about the new sortie and terrain mechanics, abandoning idea groups and cores, the change from a supply-and-demand trade system, and map changes in the Maghreb1.8

Base game

All developer diaries about Europa Universalis IV (base game).

Title DescriptionDate
A Kinderegg! Three in one!Scotland, The Hansa, and the ReformationApril 26, 2013
A Point of HonorJapan: Daimyos and the Shogunate, unification, events, ideas; plus a discussion of the new scoring system. Plus links to the call to arms and to download the songs of the EUIV musical.May 17, 2013
A smoke and a pancake?A look at Burgundy and the Low CountriesApril 11, 2013
A Tale of Two CitiesThe republics of Venice, Genoa, and a link to a video interview of Thomas "Besuchov" Johansson, project lead at Europa Universalis IV.February 15, 2013
A very small development diaryDemo will be released by the end of the week (10 August 2013); the game will be released on 13 August 2013 at 9 AM Eastern Standard Time (3 PM Swedish time).August 5, 2013
A.E.I.O.UAustria: strategic possibilities, dynamic historical events (The Italian Wars, Privilegium Maius), missions, decisions and national ideas; plus Holy Roman Empire improvements (diplomacy, reforms, elections and wars within the empire)March 8, 2013
Alt for Norge!Denmark, Norway, and a brief look at siegesJune 14, 2013
An offer you can't refuseSpy ideas and diplomatic covert actions: fabricate claim, infiltrate administration, sow discontent, sabotage reputation, support rebels, and changes to rebels.April 18, 2013
And did those feet in ancient time....England and dynamic historical events: War of the Roses and English Civil War, War of Captain Jenkin's Ear and The Muscovy Trade Company; plus national ideas, missions and decisionsOctober 19, 2012
Anna KareninaWargoals, peace options, peace interface; plus April Fool's: "EUIV, The Musical!" (songs to download and a video)April 5, 2013
Aragon, Naples and KoreaNational ideas for Aragon, Naples and KoreaJune 28, 2013
Artificially ImprovedChanges to the Artificial Intelligence (AI), detailing how it makes decisions based on its attitudes for alliances and coalitions, and how it handles its armies in wartime. There is also a brief look at how AI difficulty and handicapping can be set.August 1, 2013
Ayutthaya, Viyanagar & Muslim SultanatesA look at the national ideas major powers in the Indian subcontinent: Ayutthaya, Viyanagar and the Indian Sultanates.July 5, 2013
Divine TacticsFleet basing rights, enforce peace, and Christian TheocraciesJuly 12, 2013
Do you have any idea about it?Idea groups, national ideas, and ideas interfaceOctober 12, 2012
Dominium Maris BalticiSweden: strategic possibilities, dynamic historical events (The Dacke Feud and French Wars of Religion), missions, decisions, national ideas; plus stabilitychanges from EUIIINovember 23, 2012
Et tu Brute?Milan: strategic possibilities, dynamic historical events (Ambrosian Republic, national ideas, and republican tradition as an analogous mechanism for legitimacy for monarchiesDecember 14, 2012
For the Horde!Province interface and the Hordes of Central Asia: Steppe Nomad government type, separate technology group, automatic casus belli against neighbors, 50% damage modifier for fighting on plains and grasslands terrain and, aside from the Timurids, a set of national ideas; video link to the call to armsMay 3, 2013
Four more countries and even more...The Mamelukes, Persia, Timurids, Oman; video link to the call to arms.May 10, 2013
FREEEDOM!Rebels, their causes and mitigation: stability, government types, war exhaustion, and overextensionNovember 30, 2012
Go East!Ming China: The Mandate of Heaven, faction system, national events and ideas; plus debts and loans. Link to the Casus Belli music video.May 31, 2013
Heir of RomeOttoman Empire: strategic possibilities, events (including a series of events for the provincial system and the Janissaries), national ideas; plus a feature on WesternizationMarch 22, 2013
Honey, don't you want to talk about it?Diplomacy: new diplomatic interface, opinions and rivalsJanuary 18, 2013
Hot States in the Holy Roman EmpireQuick look at the start positions and national ideas of Brandenburg, Bavaria, and Bohemia.June 20, 2013
It all belongs to Mother Russia...Russia: strategic possibilities, dynamic historical events (Time of Troubles, Grand Embassy for westernization), missions and decisions, national ideas; army tradition and navy tradition changesNovember 9, 2012
It's a rich man's world...Trade system: trade nodes, merchants, trade power, trade mission, supply and demand, trade efficiency, trade range, trade steering, trade income, and mercantilismNovember 2, 2012
Leaders & MercenariesLand units, naval units, leaders, mercenaries; plus a link to an article at Strategy Informer: Paradox Hands-On Special: Master ClassMarch 1, 2013
Newbie FriendlyDescribes changes to the ledger, hints system, production interface, tutorialAugust 1, 2013
Nobody expects the...Spain: strategic possibilities, events, missions, decisions, and national ideas; plus details on cultural conversion.December 7, 2012
Our VisionDesign goalsAugust 31, 2012
Part II - Colonisation ClarificationColonizationJanuary 26, 2013
Sail away with me!Portugal: events, missions, decisions, ideas, and a detail on colonizationJanuary 25, 2013
Tell me sweet little lies...Coalitions, relations (improve relations and insults, overextension and coringprovinces.March 15, 2013
The 3 tiers...Discussion of the different tiers of countries, and a listing of which countries fall into each tier; the tier of the country determines the amount of developer focus on national events, features and mechanics.October 3, 2012
The Cost & Reward for TechnologyTechnology investment and cost, administrative, diplomatic and militarytechnologies defined. Plus a related video developer diary.November 16, 2012
The Crusader Kings II ConverterArticle and video developer diary of how the Europa Universalis 4 Save Converter DLC will work. Saved games will be brought in as a mod.July 31, 2013
The more the merrier!Multiplayer changes, including new networking code, hotjoining, matchmaking, standalone servers, improved chat, and AI takeover (of players who drop out). There is also a video link to the "EUIV musical" "Casus Belli".May 24, 2013
The purge & all cards on the tablePurging outdated systems and new design ideasSeptember 14, 2012
The Return of the KingsRulers, monarchs and power, heirs, advisorsOctober 4, 2012
The world is at your feetMap of the world: interface consideration for province shapes, projection, colors, terrain, seasons, etc.September 7, 2012
Unit interfaces and moreChanges to unitview, and the need for military power (MP) for special actions. Also a note on forced march and Berber culture national ideas.June 7, 2013
Vive la France!France: strategic possibilities, national missions, decisions and ideas; also brief notes on harsh treatment to curtail revolts and army morale recovery.January 11, 2013
War has never been so much fun...Shattering armies, disorganization, combat interface, combat width, flanking, supply limits, attrition, manpower, reinforcement changes, maintenance costincreases. Plus a video: the World Map Trailer.February 8, 2013
What is our mission?Missions, decisions, achievements and Ironman mode. Plus links to the initial videos of an England game play-through by Quill18.July 19, 2013
What we all waited for!National ideas of central Europe: Poland, Lithuania, HungaryJuly 26, 2013
With God on Your Side?Religion: unique abilities for Catholic, Orthodox, Sunni & Shia, religious unity now visible, and new religion interfaceOctober 26, 2012
Your Economy is about to changeIncome, expenses, stability, no "minting" (as in EUIII), LoansSeptember 28, 2012
Your envoys are awaiting your orders!Envoys: diplomats, missionaries, merchants and colonistsSeptember 21, 2012

Common Sense

All developer diaries about Common Sense expansion, patch 1.12 and patch 1.13.

TitleDescriptionPatch
Balkan BordersChanges in the province borders of the Balkan area.1.12
Design processInformation about how the new features for the game are designed.1.13
Eastern EuropeEastern Europe and Poland.1.12
Forts PreviewPresentation of 3D models that will be used to represent fort buildings.1.12
Free Cities of the HREFree Cities of the Holy Roman Empire, Remove Electorate, Pause Westernisation, Retire Advisor permanently.1.12
Frozen Rocks in the AtlanticSea Tiles changes allowing claims on the Faroe Islands.1.12
GermansMap showing all German cultures.1.12
HRE and AchievementsRevamped authority and reform mechanics for Holy Roman Empire, new achievements.1.12
Loading ScreensList of the existing loading screen, with the announcement of two new ones (Jan Sobieski and Maurice of Nassau).1.13
Local PatriotismNew culture split for Italy region.1.12
Mighty Sultanate of HormuzView of Hormuz with province screen of Yazd.1.12
Mistakes of the PastDescriptions of problems with old features: random new world, hotjoin, high altitude lakes.1.13
National IdeasAddition of several missing national ideas planned for patch 1.13.1.13
New Revolter TagsDiplomacy Screens of four new revolter tag nations.1.12
Parliament and English MonarchyNew government form called English Monarchy. Parliament a new mechanic for constitutional monarchies and constitutional republics.1.12
PeaceNew diplomatic actions, new peace options.1.12
ReligionsNew mechanism for Protestantism and Buddhism religions.1.12
Religions of the EastNew religion setup for the East Asia.1.12
Something with more Meath on itThe Earldom of Meath1.12
Square no more...Shows the region of Prussia with the not square Memel province.1.12
Subject Interaction (part 1)New interaction with vassals, marches and personal unions.1.12
Subject Interaction (part 2)New interaction with colonial nations and protectorates.1.12
Tall and Wide developmentProvince development characteristic (base tax, base manpower, base production) and new building system.1.12
Technology, Gold, Maps... A bit of everything!Changes to technology, economy, forts and provinces in Europe.1.12
Theocracies and Government RanksNew devotion system, unique mechanic for theocracies. New government ranks affecting government bonuses and national focus.1.12
Trade Routes of EuropeTrade map of Europe with few changes to trade nodes.1.12
Unavoidable Technical ProblemsPatch notes for 1.12.1 hotfix. Developer explanation of unavoidable technical problems with release major patches.1.13
WarfareNew mechanics for war, including fort overhauls, new looting mechanics, forcelimit changes, and committed armies.1.12
Western MediterraneanChanges in the provinces in the Iberia, Italy and North Africa.1.12

Conquest of Paradise

All developer diaries about Conquest of Paradise expansion, patch 1.4 and patch 1.5.

TitleDescriptionPatch
A new way of playingMigrations & federations1.4
American ProgressionNew tech system for Native Americans1.4
Colonial DiplomacyColonial diplomatic rules1.4
Colonial nationsSemi-independent colonies1.4
Exploring a new worldAmerican continent randomization1.4
Finding ParadiseIntroduction & design goals1.4
Liberty!Colonial independence mechanics1.4
Post Mortem diaryPost-release thoughts on CoP1.5
Random free stuff!Features included with patch 1.41.4
The TribesNew North American native countries1.4

Cradle of Civilization

All developer diaries about Cradle of Civilization expansion, patch 1.23 (aka Persia) and patch 1.24 (aka Japan).

Title DescriptionPatch
Additions and achievementsAchievements for patch 1.23 revealed along with the last features of the Cradle of Civilization expansion.1.23
Anatolia and the CaucasusMap and general setup changes coming for the Caucasus and Anatolia regions as part of the 1.23 patch1.23
Army DrillsA partial overview of the new setup of trade goods and a peek at the new Army drill mechanic1.23
Army ProfessionalismArmies get expanded upon with a new professionalism level while marching into more "modern" times1.23
Cultures and ReligionsThe addition of cultures and religions to the courtroom as well as special interactions for Mamluk and Iqta governments1.23
Japan and the PhilippinesAdditional provinces and tags for Japan while the Philippines receive an overhaul1.24
Japan Update ChangelogChangelog for the 1.24 Japan update.1.24
Military tidbits and AI updatesA military mixed-bag of features along with parting words from Gnivom, EU4's AI programmer, accompanied by an overview of future AI improvements and any AI cheats present in 1.231.23
MP streamlinedMP gets several issues sorted with 1.23 - expect a more smooth experience.1.23
Near East FaceliftChanges in the Arabia and Egypt regions for update 1.231.23
Ottomans ExtendedRestoring the Sultanate of Rûm gains access to the Ottoman Government, itself extended with Pashas and Jannisaries1.23
Performance and balance changesLate game performance improvements and military balance changes1.24
Persia Update Patch NotesA sneak preview of the 1.23 Persia patch notes1.23
Piety and Muslim SchoolsIslam changes move piety between the Mysticism/Legalism extremes and introduces the Muslim Schools of Law1.23
Post Release PatchPost release bug-support in the short term and and some planned enhancements in the mid-term1.23
Startup, Missionaries and ModdingStartup screens will detail the nation's situation at game start, missionaries can help in subject lands, and Groogy on extending support for modders.1.23
The 2017 Christmas wrapperA look at 2017 and overview of the EU4 team1.24
The Greater Iranian RegionChanges in the Persian super-region and new trade goods to be introduced in patch 1.231.23
The Persia UpdateA closer look on the changes at the Persian region and introduction of the new Feudal Theocracy government1.23
Trade PoliciesUse trade policies to promote profiteering, espionage, diplomacy and religion propagation.1.23
Tribal FederationsNew government mechanics for Tribal Federations infuse changes to the Turkmen sheep nations in the Middle East1.23

El Dorado

All developer diaries about El Dorado expansion, patch 1.10 and patch 1.11.

Title DescriptionPatch
Dynamic Random Nations teaserDynamic random nations mode, that creates custom countries instead of using historical ones.1.11
Inti, Maya and Liberty DesireIntroduction to the Inti and Maya religions, and the changes made to liberty desire.1.1
Nahuatl, Exploration & Treaty of TordesillasThe mechanics of the new Nahuatl religion, changes to how naval exploration works, and the addition of a system to simulate how the New World was historically divided between Spain and Portugal1.1
Seven Cities of Gold and Colonial MerchantsChanges to land exploration, caravan power - a new mechanic for inland trade and dynamic historical events for South- and Mesoamericans.1.1
The Nation DesignerIntroduction to the nation designer which enables customized nations.1.1
Title and LinkDescription1.11
Treasure fleets and pirate huntingNew treasure fleet mechanic and its associated pirate hunting mechanic, and changes to terrain1.1

Mandate of Heaven

All developer diaries about Mandate of Heaven expansion, patch 1.20 (aka Ming) and patch 1.21 (aka Hungary).

Title Description 
Age of AbsolutismAbsolutism is a new mechanic added for free with the patch1.20 
Age of ReformationA detailed look at the the 2nd age, the Age of Reformation1.20 
Age of RevolutionsAfter enlightenment comes revolutions1.20 
Ages of Europa UniversalisThe next expansion will bring forth a new system called ages1.20 
Big Bonus One!Details on the changes in the 1.20 (aka Ming) patch accompanying the Mandate of Heaven expansion1.20 
Bits and PiecesJust released a patch, slow news day1.20 
Breaching that WallNew Breach mechanic, Bankruptcy changes and various UI improvements1.20 
ConfucianismMandate of Heaven will rework the Confucian religion1.20 
Devastation and ProsperityNew values for provinces1.20 
Hungary and BohemiaThe Hungary update will bring some new things to Hungary1.21
JapanChanges to Japan, a reworked Shogunate government form and new subject interactions for Daimyo vassals1.20 
Manchurian BannersThe Eight Banners of Manchu1.20 
Ming UpdateThe Ming Update (1.20) changelog preview1.20 
Sailors and Yuan in 1.21Let's sneak an early peak at 1.211.21
ShintoismNew mechanics and ideas for Shintoism1.20 
State EdictsNew State interface and interactions1.20 
The 1.21 Hungary Update is comingThe 1.21 Hungary Update Changelog1.21
The Diplomatic Macro BuilderMandate of Heaven introduce a vast improvement to perform diplomatic actions1.20 
The Empire of ChinaMing and the Mandate of Heaven1.20 
Tributary StatesNew subject type for eastern civilizations1.20 
Wrapping up 2016A look at 2016 and a small teaser for what is to come in 20171.20 

Mare Nostrum

All developer diaries about Mare Nostrum expansion, patch 1.16 and patch 1.17.

TitleDescriptionDate
Africa ReworkNew nations and ideas in Africa1.16
CondottieriCondottieri - rent out armies to other nations1.16
Espionage1.17 and changes to espionage ideas and fabricating claims1.17
Espionage ReworkSpy networks1.16
Map ChangesMap changes in Ireland and Hungary, Culture changes in Europe and Middle East1.16
Mare NostrumThe goal with Mare Nostrum1.16
Naval missionsThree new naval missions and changes in naval combat and naval leader pips1.16
Naval ReformsChanges to naval aspects (introduction of sailors)1.16
Territories, States and CorruptionOverseas mechanic rework and introduction of Corruption1.16
The TeamMeet the team and get some preview information on bugfixing patch 1.171.17
Timeline and AchievementsAchievements, timeline, Roman Empire formation, new country ideas1.16
Trade leaguesTrade leagues and changes to mercantilism1.16
Unconditional SurrenderUnconditional surrender and map sharing1.16

Res Publica

All developer diaries about Res Publica mini-expansion and patch 1.7.

TitleDescriptionPatch
Dutch Republic & IdeasDutch factions added & 3 new ideagroups1.7
Elective Monarchy & RivalsElective Monarchy explained & changes to rival mechanics1.7
Merchant Republics / National FocusNew governmental mechanics1.7

Rights of Man

All developer diaries about Rights of Man expansion, patch 1.18 (aka Prussia) and patch 1.19 (aka Denmark).

TitleDescriptionPatch
1.18 updates older expansions1.18 brings some overhauls to old expansion features1.18
1.19 Beta FeedbackWe've reverted the Fort Zone of Control changes planned for 1.191.19
A Queen RegentChanges to regencies: war declarations and queen regents1.18
Balance Changes in Patch 1.18A look at the most important balance changes with a quick explanation on why they were made1.18
Bodycount & Minimap ImprovementBodycount screens coming at the end of wars, and you can now see armies on the minimap1.18
Coptic Holy SitesA new blessings and holy cities system for Coptics1.18
CultsCults are coming to the Fetishists in the next expansion1.18
CultureChanges to how accepted Culture will work in 1.181.18
Denmark1.19, aka Denmark, brings enhancements to Scandinavian nations and more rules for AI/player replacement (in MP)1.19
DLC productionThe DLC producer explains the development process1.18
Fort Zone of ControlChanges to Fort ZoC in 1.19 and some other things1.19
FutureWhat do we want from the future of the game?1.18
Great PowersWith the next expansion Great Powers will be introduced1.18
Leader TraitsIntroduction of traits for land and naval leaders1.18
New Unit Models for VanillaCarlos shares the story of how he decided to remake the vanilla unit models1.19
Post Release EvaluationWhat the team like best with Rights of Man + 1.19 teaser1.19
Prussian MonarchyPrussian Monarchy, Disinherit, Abandon PU, Debase Currency and Strengthen Government1.18
Revolutionary Republics FactionsNew factions for Revolutionary Republics in the Rights of Man1.18
Ruler PersonalitiesThe next expansion will introduce character traits to your ruler1.18
Subjects InteractionsNew Military Focuses for Subjects & new Subjects Interface1.18
Technology GroupsChanges to technology groups and technological development1.18
The Ottoman SultanateThe Ottomans get some unique flavor in the upcoming expansion1.18
UI ImprovementsInterface improvements coming in the "Denmark" (1.19) update1.19
Wrapping TeasersLast 1.18 teasers: an addition to El Dorado, launcher improvements, 20 new achievements and new national ideas1.18

The Cossacks

All developer diaries about The Cossacks expansion, patch 1.14 and patch 1.15.

TitleDescriptionPatch
A Whole Random New WorldAnnouncement of Random New World remake that will be available for all CoP owners.1.14
Advanced Culture Change, Mercenaries and Naming your HeirCultures, naming Heirs, Mercenaries and Blocking Canals1.14
Areas and RegionsNew divisions of the map into areas, regions and super regions. Regional naming for enclaves and overseas areas. Coloring of the wasteland provinces for dominant nations.1.14
Balance and UI ImprovementsChanges to Hordes, Spread of Discoveries and UI Improvements1.15
Bugfixing and balanceChanges to Estates, Diplomatic feedback and Elective Monarchy1.15
Convenience and interface improvementsBuilding directly to armies, constructing in subjects, country view improvements, and macrobuilder improvements1.14
Diplomatic FeedbackProvinces of interest, attitude, trust and favors, and calling allies1.14
Espionage, Spoils of War and Fort's Zone of ControlNew espionage actions, distribution of spoils of war, changes in fort's zone of control, and permanent claims1.14
EstatesEstates system representing internal politics1.14
Future Nation Designer ImprovementsUpcoming improvements for Nation Designer including option to save a nation template.1.14
Ironman and AchievementsIronman and Achievements Rework, Capital Development Discount, Revanchism1.14
Native Policies and Colonial WarsPolicies for colonies, colonial wars and the conceding of colonial areas in peace deals1.14
New free featuresColonial trade goods, Cultural unions, Multiplayer changes and Achievement browser1.14
Paradox Pricing PolicyInformation about the process used to determine price of expansion1.15
Random New World IIRandom New World, Provinces and Scenarios, Dynamic Trade Nodes, Dynamic Naming1.14
Steppe HordesHorde Unity, Razing, Tengri, Horde Units, Returning and Selling Provinces1.14
Threaten war and grants cores, claims and provincesNew diplomatic actions for threatening war and granting land to subjects1.14
Victory CardsAnnouncement of the new Victory Cards system, which will help to gain score in multiplayer.1.14

Third Rome

All developer diaries about Third Rome expansion and patch 1.22 (aka Russia).

TitleDescription
Bonus Development DiarySneak peek at features for 1.22, including Press Sailors subject interaction and changes for blockades, marches, Aristocracy ideas and Buddhism
Changing of the GuardAnna "Anona" Norrevik on changes within the team and introduction of the new project lead Linda "Fogbound" Tiger
Custom Nation Designer and AchievementsJake explains the novelties in the nation designer and introduces new achivements (from his balcony)
EU4 Sound EffectsDavid, the sound designer, on complementing the EU4 interface with the right sound effects
Historical ResearchTrin Tragula, EU4's content designer, on the process of historical research done with EU4 and its expansions
Icons and MetropolitansJake elaborates on the expanded mechanics for the followers of the Orthodox faith
Russian and Cossacks ChangesNew government types and abilities for the Russian regions in addition to new content for previous expansions
The Russian PrincipalitiesTrin Tragula, EU4's content designer, reveals setup changes in the Greater Russian region coming in 1.22
Third Rome UpdateThe Third Rome (1.22) changelog
TsardomNew government type comes with new abilities

Videos

Developer video diaries and developer’s let’s play sessions on the various expansions.

Title DescriptionDate
Common Sense - Feature SpotlightIn this video, Project Lead Martin Anward gives us his insights of the expansion.June 4, 2015
Conquest of Paradise - Native AmericansStudio Manager Johan Andersson speaks about the new features in the upcoming expansion, Conquest of Paradise. This DD focuses on the expanded gameplay and mechanics for the Native American tribes, including new nations, unique buildings, and nomadic peoplesDecember 12, 2013
Conquest of Paradise Livestream HighlightsProject Lead Thomas sits down with Matt to discus the first expansion for Europa Universalis IV.November 8, 2013
Converter Tool HighlightsHow the Crusader Kings II-to-EUIV converter DLC will work. Saved games will be brought in as a mod.July 31, 2013
Cossacks - Feature SpotlightParadox Walks You Through Major ImprovementsNovember 24, 2015
Cradle of Civilization - Feature StreamJake Leiper details the features in the upcoming Cradle of Civilization expansion and the 1.23 Persia updateOctober 24, 2017
Developer WalkthroughThomas Johansson, project lead for Europa Universalis IV shows off this new game from Paradox Interactive.November 9, 2012
El Dorado - Feature SpotlightProject Lead Martin Anward describes the new mechanics for Central and South American native states, including three new religions that promise to challenge even the most experienced desktop monarchs. Anward also goes into great detail on the Nation Designer and alternate starting maps that will be available for the first time in Europa Universalis IV: El Dorado.February 24, 2015
Europa Universalis IV: Art of War Video Developer DiaryMartin "Wiz" Anward, Project Lead for Europa Universalis IV, explains some of the new tools available to players as they march to war. Learn about new diplomatic options, the new powers of rebels and other notable changes.October 10, 2014
Europa Universalis IV: Wealth of Nations Video Developer Diary #1Project Lead Thomas Johansson talk about the features of the upcoming Europa Universalis IV-expansion "Wealth of Nations", which focuses on trade and how to make the wealth of the world flow into your coffers.May 16, 2014
Explorationdeveloper diary from Thomas Johansson about how to colonize as an option for more nimble powers.July 15, 2013
Mandate of Heaven - Feature SpotlightJake Leiper goes over the features in the coming EU4 expansion, Mandate of HeavenMarch 30, 2017
Mandate of Heaven #1 - Empire of China, Tributaries & Manchu BannersDDRJake goes over the China region and the new mechanics added thereMarch 14, 2017
Mandate of Heaven #2 - AgesDDRJake and Johan Andersson and the separation of time in EU4 1.20March 21, 2017
Mandate of Heaven #3 - Diplomatic Macro-BuilderDDRJake on the Quality of life improvement that is the Diplomatic Macro-BuilderMarch 24, 2017
Mandate of Heaven #4 - JapanDDRJake goes over the mechanic changes done in the Japanese regionMarch 28, 2017
Mare Nostrum - Feature SpotlightJohan Andersson goes over the features in the coming EU4 expansion, Mare NostrumMarch 23, 2016
Mare Nostrum #1 - Map Changes & Trade LeaguesDDRJake and BjörnB cover some of the new content in Mare NostrumMarch 8, 2016
Mare Nostrum #2 - New Ideas & TimelineDDRJake and BjörnB cover some of the new content in Mare NostrumMarch 15, 2016
Mare Nostrum #3 - CondottieriDDRJake covers some of the new content in Mare NostrumMarch 22, 2016
Mare Nostrum #4 - Kuba LubaDDRJake and BjörnB play-test Mare Nostrum as Luba in the new regions added to AfricaMarch 29, 2016
Mare Nostrum #5 - Countdown to LaunchDDRJake play-tests some of the new content in Mare Nostrum just before releaseApril 5, 2016
Paradox Live 0010 - The Art of WarEuropa Universalis IV, The Art of War is coming, lets sit down with Martin and talk about it.September 13, 2014
Paradox Live 0017 - A reply to ArumbaEarlier this week, Arumba posted a video about how to improve Europa Universalis IV in twelve minor ways. The video can be found here: https://www.youtube.com/watch?v=xAHCRTSGdLwNovember 27, 2014
Paradox Live 0018 - EUIV Patch 1.9 and free featuresWe're working on the 1.9 patch for EUIV, this patch includes both bug fixes and a content update.December 4, 2014
Religiondelved into in detailJuly 1, 2013
Rights of Man - Feature SpotlightJohan Andersson goes over the features in the coming EU4 expansion, Rights of ManOctober 7, 2016
Rights of Man #1 - Reveal StreamJohan Andersson and cKnoor reveal the next expansion for EU4 at GamesComAugust 19, 2016
Rights of Man #2 - Institutions, Tech & moreJohan Andersson and DDRJake on the overhauled technology system in EU4August 31, 2016
Rights of Man #3 - Queens, Regencies & moreDDRJake expands on queens and reworked regency systemSeptember 7, 2016
Rights of Man #4 - Great Powers, Subjects & moreDDRJake explains advantages of being a great power and improvements to subjectsSeptember 14, 2016
Rights of Man #5 - Leader traits, Copts & moreJohan Andersson and DDRJake on military traits and unique co-op like mechanics for Coptic religionSeptember 21, 2016
Technologychanges shown off.February 13, 2013
The Art of War - Feature 3 HighlightsWe needed to do a third feature presentation for the Art of War to cover the final bits that we needed to cover.October 29, 2014
The Art of War - Feature HighlightsWe sat down with Wiz to talk about the upcoming expansion for Europa Universalis IV, The Art of War.September 23, 2014
The Art of War - Features 2 HighlightsThere's smoke on the horizon, war is brewing. So here's the highlights for the Art of War to get you up to speed on the mechanics in this expansion.October 20, 2014
The History of Historical StrategyHighlighting the studio's humble beginnings with its adaptation of Europa Universalis from the tabletop to the desktop, this short film goes on to examine the team responsible for such titles as the Hearts of Iron and Crusader Kings series. Games both old and new are shared from the designers' perspective, including a look at what's next for Paradox Development Studio -- their first RPG, Runemaster.April 30, 2014
Third Rome - Feature StreamJake demonstrates the features in the upcoming EU4 immersion pack, Third RomeMay 30, 2017
WarfareProject Lead Thomas Johansson describes the nuances of war strategy. A Guide to Conquering Nations the Old-fashioned Way.July 25, 2013

Wealth of Nations

All developer diaries about Wealth of Nations expansion and patch 1.6.

TitleDescriptionPatch
Balance ChangesChanges and improvements to mechanics and balance in 1.6 patch1.6
Companies and CanalsTrade company mechanics & buildable canals1.6
Free Features #1Lots of features expanded in the 1.6 patch1.6
Free Features #2Interface improvements (esp. Macro Build Interface)1.6
General InformationIntroduction & design goals1.6
Improved DiplomacyNew rival system & trade related CBs1.6
Naval ImprovementNew naval mechanics1.6
Policies & Ideas & MorePolicies added & expanded climate mechanics1.6
ReligionNew religion mechanics1.6
Trade ImprovementsNew trade mechanics1.6