Developer diaries

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Lions of the North.png Lions of the North
Origins.png Origins
Leviathan.png Leviathan
Emperor.png Emperor
Golden Century.png Golden Century
Dharma.png Dharma
Rule Britannia.png Rule Britannia
Cradle of Civilization.png Cradle of Civilization
Third Rome.png Third Rome
Mandate of Heaven.png Mandate of Heaven
Rights of Man.png Rights of Man
Mare Nostrum.png Mare Nostrum
The Cossacks.png The Cossacks
Common Sense.png Common Sense
El Dorado.png El Dorado
Art of War.png Art of War
Res Publica.png Res Publica
Wealth of Nations.png Wealth of Nations
Conquest of Paradise.png Conquest of Paradise
EU4 icon.png Base version

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

Domination[edit | edit source]

All developer diaries about the Domination immersion pack and patch 1.35.

Patch 1.35
No. Title and Link Description Date
12 1.35 Balance and Modding Balance changes and usermodding additions for patch 1.35 2023-03-21
11 1.35 Free Content & Gov Mechanics New government mechanics, great projects, holy orders, naval doctrines, and other content for patch 1.35 2023-03-14
10 All Blue New content for Portugal, Prussia, and Korea 2023-03-07
9 Monarchy of Great Britain New content for Great Britain 2023-02-28
8 Crown of Iberia New content for Spain 2023-02-21
7 Empire of France New content for France 2023-02-14
6 Tsardom of Russia New content for Russia 2023-02-07
5 Shogunate of Japan New content for Japan 2023-01-31
4 Ottoman Empire 1.35 New content for the Ottoman Empire 2023-01-24
3 1.35 Emperor of China New content for China 2023-01-17
2 Unit Pip Rebalance Rebalance of unit pips for patch 1.35 2022-12-20
1 Roadmap to 1.35 Roadmap for development of the next update, along with the introduction of new idea groups and changes to old idea groups 2022-12-13

Lions of the North[edit | edit source]

All developer diaries about the Lions of the North immersion pack and patch 1.34 (aka Sweden).

Patch 1.34 (Sweden)
No. Title and Link Description Date
21 1.34.5 Minor patch to facilitate the launch of Europa Universalis IV on GOG 2022-11-23
20 1.34.4 Sweden is now LIVE! 1.34.4 changelog 2022-10-13
19 1.34.3 Sweden Changelog 1.34.3 changelog 2022-09-22
18 Post Release & Norse Easter Egg Questions about Norse content in Lions of the North 2022-09-20
17 1.34 Sweden Changelog 1.34 changelog 2022-09-06
16 1.34 Achievements New achievements, modding additions, and idea group changes for patch 1.34 2022-08-09
15 Scandinavian Unit Models Scandinavian Unit Pack reveal 2022-08-02
14 1.34 Monuments Eight new monuments, idea groups and policies rebalance, crownland and government reform progress, government capacity, and other miscellaneous changes for patch 1.34 2022-07-26
13 1.34 AI Improvements AI changes and adjustments for patch 1.34 2022-07-19
12 Finland Mission trees and events for Finland and Lübeck along with updated theocracy reforms 2022-07-12
11 Gotland Mission tree and events for Gotland 2022-07-05
10 Commonwealth Mission trees and events for Poland, Lithuania, and the Commonwealth along with new Winged Hussar units 2022-06-28
9 Scandinavia Mission tree, events, and national ideas for Scandinavia along with updated monarchy and republic reforms 2022-06-21
8 Norway Mission tree and events for Norway 2022-06-14
7 The Rise of Sweden Mission tree and events for Sweden along with new Carolean and Hakkapeliitta units 2022-06-07
6 1.34 Denmark Mission tree, events, and national ideas for Denmark along with new naval doctrines for Rule Britannia owners 2022-05-31
5 1.34 Combat Land combat changes for patch 1.34 2022-05-24
4 Riga Mission tree and events for Riga 2022-05-17
3 The Livonian Order Mission tree and events for the Livonian Order 2022-05-10
2 The Teutonic Order Mission tree and events for the Teutonic Order 2022-05-03
1 1.34 Roadmap Roadmap for development of the next update 2022-04-26

Origins[edit | edit source]

All developer diaries about the Origins immersion pack, patch 1.32 (aka Songhai), and patch 1.33 (aka France).

Patch 1.33 (France)
No. Title and Link Description Date
10 1.33.3 France Update Retrospective Retrospective of patch 1.33 2022-04-12
9 1.33.3 France Hotfix Patch notes of 1.33.3 2022-04-07
8 1.33 France Update is now LIVE! Release of patch 1.33 2022-03-02
7 1.33.2 France Open Beta Update Patch notes of 1.33.2 open beta 2022-02-22
6 1.33.1 Open Beta Patch Notes Patch notes of 1.33.1 open beta 2022-02-11
5 No DD today + 1.33 Open Beta feedback update 1.33 open beta feedback 2022-02-08
4 1.33 Opt-in Beta Patch now Available on Steam! Patch notes of 1.33 open beta 2022-02-01
3 1.33 Changes + Open Beta Game balance changes, script debt, and open beta 2022-02-01
2 Changes to AI in 1.33 AI improvements and changes to land combat 2022-01-25
1 New Year, New Dev Diary Announcement on game balance changes for patch 1.33 2022-01-18
Patch 1.32 (Songhai)
No. Title and Link Description Date
16 1.32.2 Songhai is now LIVE! 1.32.2 changelog 2021-11-30
15 Reflections and the Future Post-Origins plans 2021-11-16
14 1.32.1 Songhai is now LIVE! 1.32.1 changelog 2021-11-15
13 1.32 Songhai is now LIVE! Release of 1.32 2021-11-11
12 Achievements, Monuments & Balance New achievements, balance, and performance discussion 2021-11-09
11 1.32 Songhai Changelog 1.32 changelog 2021-11-04
10 The 'Art of Africa' Theory New unit models for Origins and new advisor icons for Leviathan 2021-11-02
9 Judaism & Other African Changes New mechanics for Judaism and new missions, events, and content for sub-Saharan African nations 2021-10-26
8.5 Balance Update for the Upcoming Content Various balance changes regarding content shown in previous developer diaries 2021-10-21
8 New Missions: Mutapa and Kilwa Mission trees and events for Kilwa and Mutapa, new formable nations in Africa and one in the Middle East, new estate privileges for Fetishist, Muslim, and Christian nations 2021-10-19
7 New Monuments Fifty-two new monuments, with an example for every continent 2021-10-13
6 New Missions: Kongo Mission tree and events for Kongo, mission tree and national ideas for Adal, terrain and climate changes for the Horn of Africa, and Cawa units and estate changes for Ethiopia 2021-10-05
5 Rebalancing Concentrate Development, Institutions, and More Changes on how institutions work, balance changes for Catholic Curia powers, concentrate development, favors, migration cooldowns, and a new native tribes reform 2021-09-28
4 New Missions: Ajuuraan and Ethiopia Mission trees, mechanics, and events for Ajuuraan and Ethiopia 2021-09-21
3.5 EU4, No Mapchanges and Whys Reasons for the freeze on map changes 2021-09-14
3 New Missions: Songhai Mission tree and events for Songhai 2021-09-14
2 New Missions: Mali Mission tree and events for Mali 2021-09-07
1 State of the game, metrics, and future plans Metrics, state of the game, and roadmap 2021-08-24

Leviathan[edit | edit source]

All developer diaries about the Leviathan expansion and patch 1.31 (aka Majapahit).

Patch 1.31 (Majapahit)
No. Title and Link Description Date
43 1.31.5 Majapahit is now LIVE! 1.31.5 changelog 2021-07-08
42 New Monuments Chosen for 1.31.5 6 new monuments and one replacement for users with Leviathan DLC 2021-06-08
41 1.31.4 Majapahit is now LIVE! 1.31.4 changelog 2021-06-03
40 PDXCON Q&A with Tinto - Transcript! Q&A transcript from PDXCON 2021-05-27
39 New Monuments for 1.31.5 Candidates for new monuments 2021-05-24
38 1.31.3 Majapahit is now LIVE! 1.31.3 changelog 2021-05-12
37 1.31.2 Majapahit is now LIVE! 1.31.2 changelog 2021-05-03
36 1.31.1 Majapahit is now LIVE! 1.31.1 changelog 2021-04-28
35 1.31 Patch Notes & The Future of EU4 Bug fix discussion and patch notes 2021-04-20
34 War Canoes & Unit Renders New ship type for tribes and primitives and unit renders for Southeast Asian countries 2021-04-06
33 Favors Part 2 Seven new favor mechanics and changes to two old favor mechanics 2021-03-30
32 Colonial Nations Variations on colonial nations 2021-03-09
31 Centralize State New "Centralize a State" mechanic 2021-03-02
30 Concentrate Development New "Concentrate Development" mechanic 2021-02-23
29 Australia An overview of the new missions, provinces, tags, national ideas in Australia, and new Alcheringa religion 2021-02-16
28 Monuments Great monuments 2021-02-09
27 Draft Transports New "Draft Transports" action; changes about Plutocracies 2021-02-02
26 North American Tags New missions and events for North American tribes 2021-01-26
25 Regencies Improved regencies 2021-01-19
24 Polynesia An overview of the new tags, missions, mechanics, and events for Polynesia 2021-01-12
23 The Philippines New missions for Tondo, Madyas, and Palembang 2020-12-15
22 Grandest LAN Post Mortem Grandest LAN Event 2020-12-01
21 More Missions Continuation on First Nation missions 2020-11-24
20 First Nation Missions New missions for North American tribes 2020-11-17
19 Totemism New mechanics for Totemism and details on Sikh Guru traits 2020-11-10
18 Survey Results Survey analytics 2020-11-03
17 Governing Capacity & UI Improved interface to identify provinces for courthouses/ statehouses and new "Expand infrastructure" mechanic 2020-10-27
16 Sikh & Zoroastrian Zoroastrian and Sikh unique features 2020-10-20
15 Favors Part 1 New "curry favors" action and other flavor mechanic changes 2020-10-13
14 Naval Rebalance Rebalance of sailors, ships, and naval combat 2020-10-06
13 Paradox Tinto EU4 development moves to Barcelona; new Idea Groups for Hordes, Theocracies, and Indigenous 2020-09-29
12 Federations & The New World Revamped tribal federations mechanic, map changes, new tags 2020-09-22
11 North American Government Reforms Native government reforms and Native buildings 2020-09-15
10 North American Natives A highlight of a new devastation and seasonal migration mechanic for North American tribes 2020-09-08
9 Lan Xang and Sunda An overview of the new missions, estate privilege, and religion setup for Lan Xang, Sunda, and minor Maritime Southeast Asian countries 2020-09-01
8 Pegu and More An overview of the new missions, events, and mechanics for countries in Burma region 2020-08-25
7 Vietnam An overview of the new missions, disaster, and culture setup for Vietnam and Champa 2020-08-18
6 Brunei, Malacca, and Aceh An overview of the new missions, estate privilege, and national ideas for countries in Maritime Southeast Asia 2020-08-11
5 Khmer Empire An overview of the new missions, disaster, estate privileges, and events for Khmer 2020-08-04
4 Java An overview of the new missions, disaster, and events for Majapahit 2020-07-28
3 Ayutthaya An overview of the new missions, national ideas, and events for Ayutthaya 2020-07-21
2 Maritime Southeast Asia A summary of the province, tag, and culture changes within the Indonesia region 2020-07-14
1 Mainland Southeast Asia A summary of the province, tag, and culture changes with a new formable, Siam 2020-07-07

Emperor[edit | edit source]

All developer diaries about the Emperor expansion and patch 1.30 (aka Austria).

Patch 1.30 (Austria)
No. Title and Link Description Date
65 1.30.6 Changelog 1.30.6 changelog 2021-03-17
64 1.30.5 Changelog 1.30.5 changelog 2021-02-16
63 1.30.4 Changelog 1.30.4 changelog 2020-09-09
62 1.30.3 Changelog 1.30.3 changelog 2020-06-23
61 1.30.2 Changelog 1.30.2 changelog 2020-06-16
60 1.30.1 Changelog 1.30.1 changelog 2020-06-09
59 1.30 Changelog 1.30 changelog and new sprites (unit models) 2020-06-02
58 Miscellaneous Miscellaneous small updates, such as keybinds/shortcuts, allow/block subject growth, minority expulsion 2020-05-26
57 Achievements New achievements 2020-05-19
56 Germany and Lübeck Missions Mission trees for Germany, the Holy Roman Empire, and Lübeck 2020-05-12
55 Burgundy New missions, decisions, and succession crisis for Burgundy 2020-05-05
54 Bohemia & The Hussites Hussite faith and its associated content, as well as the new mission tree for Bohemia 2020-04-28
53 Nation Designer & Revolutionary Mechanics Custom Nation unit model choices and Revolutionary Zeal changes, introducing the Revolutionary Guard 2020-04-21
52 Even More Imperial Incidents Decline of the Hanseatic League, Reformers Protest, and Great Peasants' War; insights into UI development 2020-04-14
51 Governing Capacity Governing Capacity and Industrial Revolution Institution 2020-04-07
50 HRE Reform Changes New HRE interface, Centralized and Decentralized Reforms, and Empire Balancing 2020-03-31
49 Catholicism Rework Curia Coffers, Golden Bulls, and the Council of Trent 2020-03-24
48 Italian Flavor Mission trees for Italy and the Papal States; Italian Wars 2020-03-17
47 Estates and Crown Lands Estates rework, crown lands, and privileges 2020-03-10
46 The Kingdom of God Update to Declare Kingdom of God and Unify Islam decisions 2020-03-03
45 Mercenary Companies Update in Mercenary system 2020-02-25
44 Even More Quality of Life Introduce new heirs, Core All button, view subject mission trees, and more 2020-02-18
43 Defender of the Faith Updates Defender of the Faith updates and Provoke Revolt 2020-02-11
41 More Quality of Life Military strength in the war declaration view, "go to" button for events, and more 2020-01-28
42 Hegemonies Hegemony Mechanic 2020-02-04
Hegemonies - Version II A tweaked Hegemony Mechanic, reworked after feedback on the original developer diary
40 Huge Balance Changes Government, Territory, Trade Companies, Naval, Land Warfare, Theocracy Government Reforms, and more 2020-01-14
39 A Small Christmas Teaser Some and clarifications and more information on the teasers so far 2019-12-19
38 I'm back! Johan Andersson returns as a game director to EU4 to work along the current game designer Henrik "Groogy" Hansson 2019-12-12
37 Vive La Révolution Total overhaul of revolutionary republics as well as a look at the new Burgundian Succession 2019-12-03
36 Quality of Life State tab on the macrobuilder, truce deal screen, Switzerland gameplay 2019-11-05
35 Polish Days Improving the economy of the AI 2019-10-29
34 More Imperial Incidents Dutch Revolt and Shadow Kingdom 2019-10-15
33 Farewell From Jake Jake "DDRJake" Leiper-Ritchie, EU4's game director, summarizes his time at Paradox and bids farewell to all 2019-10-11
32 Imperial Incidents Imperial incidents arrive to make the empire feel alive and rife with bickering princes 2019-10-08
31 HRE Reforms Changes to HRE reforms and Imperial Incidents 2019-10-01
30 Strengthening The Pope In Rome Changes to Catholicism and the Papacy 2019-08-20
29 Estates Overhaul Changes to the estates feature 2019-08-13
28 Mercenary Companies A focus on the refactored mercenary system 2019-08-06
27 Savoy A look on a new trade node in Valencia and Savoyard mission tree 2019-07-30
26 Hungary A look on a new trade node in Pest and Hungarian mission tree 2019-07-23
25 HRE electors A focus on HRE electors 2019-07-16
24 Naples A focus on Naples 2019-07-09
23 Patch Announcement and Content Teases! Delay of the European update and next patch to be out post-summer 2019-07-02
22 Austria, Serbia and Crusader States Missions! Expanded and updated content for Austria, Serbia, and the Catholic "crusader states" in Greece 2019-06-25
21 Austria & Balkans Map Updates! New provinces in the Balkans and Austria 2019-06-18
20 French Region Missions Expanded mission trees for France, Provence, and the Low Countries 2019-06-11
19 France and the Low Countries France get balkanized, Geneva shows up as a vassal of Savoy, the Low Countries get a new province or two 2019-06-04
18 Italian Missions Mission trees and events for Florence, Milan, and Venice 2019-05-28
17 Italian Map Changes New provinces and a new Sicilian tag 2019-05-21
16 German Missions Mission trees for German states in the upcoming DLC 2019-05-14
15 Three Hurrahs for Germany New German and Bohemian provinces; Bavarian events 2019-05-07
14 The HRE, The Pope and the 4K UI scaling, changes to the HRE and Catholicism 2019-04-30
13 Custom Nations Improvements to custom nations 2019-04-23
12 Quality of Life Quality of Life changes 2019-04-16
11 Tech Debt Explanation of tech debt, and why it is important to reduce it. A.K.A "Tidying Up with Visual Studio" 2019-04-09
10 Estates - Past, Present and Future Small post airing some future ideas for the Estates mechanic 2019-04-02
9 Mercenaries Ambitions for game mechanics in the upcoming European Expansion 2019-03-26
8 Missions! How mission trees are made and their future development 2019-03-19
7 The German Map Diary discussing the possible map changes in Germany 2019-03-12
6 The Balkan Map Diary discussing the possible map changes in the Balkans 2019-03-05
5 France & Italy Diary covering tentative map changes for the French and Italian regions 2019-02-26
4 Thoughts on bugfix patch 1.28.3 Highlights from the bugfix patch and some more user suggestions 2019-01-22
3 Jake is back and talking about the future DDRJake talks on what can expected in the next expansion and goes over some user suggestions 2019-01-15
2 Dev Diaries to resume soon! The coming weeks and user's suggestions on DD topics 2019-01-08
1 A look at this year and the future A summary of the year, about forum suggestions, and the road ahead 2018-12-18

Golden Century[edit | edit source]

All developer diaries about the Golden Century immersion pack, patch 1.28 (aka Spain), and patch 1.29 (aka Manchu).

Patch 1.29 (Manchu)
No. Title and Link Description Date
22 Post Manchu Update Feedback on the 1.29 "Manchu" update 2019-09-24
21 Launching the new launcher! The Paradox launcher to be added to EU4 2019-09-16
20 The Manchu Update Release notes for the 1.29 "Manchu" update 2019-09-16
19 Final Manchu Update Japan, Korea, Central Asia, and everything else 2019-09-10
18 Manchus, Mongols, Missions and Maps A closer look at the changes in Manchuria and Mongolia 2019-09-03
17 The Manchu - 1.29 Free Update Changes to Manchuria, Ming, and much of East Asia 2019-08-27
16 Fantastic Bits and where to find them Promised dev diary explaining results of upgrading to 64-bit 2019-02-19
Patch 1.28 (Spain)
No. Title and Link Description Date
15 A short update Review of 1.28.3, end of Mandate of Heaven free trial and EU4 upgrading to 64-bit in next update 2019-02-05
14 Upcoming 1.28.3 patch changelog Changelog for the 1.28.3 bugfix patch and information on monthly free trials for DLC 2019-01-29
13 Thoughts on bugfix patch 1.28.3 Highlights from the bugfix patch and some more user suggestions 2019-01-22
12 A look at this year and the future A summary of the year, about forum suggestions, and the road ahead 2018-12-18
11 Patchnotes for 1.28 Update A sneak peek at Golden Century and update 1.28 patch notes 2018-12-10
10 Golden Century Feedback & Changes Integration of older DLC mechanics into the base game 2018-12-06
9 Achievements and the feedback process New achievements and addressing player feedback 2018-12-04
8 Content pack Eye candy stuff by DDRJake 2018-11-27
7 Pirate Republics Pirate Republic government type and mechanics 2018-11-20
6 Maghreb nations New focus on content for the nations of the Maghreb and Catholic Iberia 2018-11-13
5 New missions and idea group New missions and national ideas for Iberian nations 2018-11-06
4 Two new features Naval barrage, flagships, and re-balancing idea groups 2018-10-30
3 Holy Orders and Colonial Diversity Establishing Holy Orders, Expulsion of Minorities, new provinces and colonial regions 2018-10-23
2 AI Updates mikesc covers the new AI improvements and scripting abilities for modders 2018-10-16
1 Iberian and North African Map Changes neondt covers the long-awaited Iberian and North African map update 2018-10-09

Dharma[edit | edit source]

All developer diaries about the Dharma expansion, patch 1.26 (aka Mughals), and patch 1.27 (aka Poland).

Patch 1.27 (Poland)
No. Title and Link Description Date
27 Poland Update and Moving Forward DDRJake, EU4's game director, on the upcoming hotfix and teasing focus of the future Immersion Pack and patch 1.28 2018-10-02
26 The 1.27 "Poland" update 2/2 Final dev diary for the upcoming 1.27 "Poland" update 2018-09-25
25 The 1.27 "Poland" update 1/2 More flavor in the Polish regions, new NIs, event chains and some more government reforms/types 2018-09-18
Patch 1.26 (Mughals)
No. Title and Link Description Date
24 Final Post-Dharma Dev Diary Post-release support including a hotfix list 2018-09-11
23 Mughals Update Patch Notes A sneak preview of the 1.26 "Mughals" patch notes 2018-09-04
22 Recap of Changes Recap of the main changes incoming as part of Dharma and the 1.26 "Mughals" patch 2018-08-28
21 New Achievements A look at the new achievements coming for Dharma 2018-08-21
20 Dharma's Content Pack Elephants coming to a place nearby you in the content pack for Dharma 2018-08-14
19 Additional Missions and National Ideas Shedding more light on the new mission trees and NIs coming in Dharma and Third Rome 2018-08-07
18 Evolving Centers of Trade Changing the trade setup and the ability to evolve centers of trade 2018-07-31
17 Balance changes and Bengal National Ideas A round-up of the balance changes made to existing mechanics in 1.26 so far 2018-07-24
16 Multiplayer and Indian Siege Graphics Allowing for players (nations) to team up in multiplayer and new graphics for Indian sieges 2018-07-17
15 New nations to be formed! The new formable nations as well as their national ideas 2018-07-10
14 Climate, Weather and Elephants Weather mapmode, changes to winter and terrain as well as a new Indian cavalry model 2018-07-03
13 Two smaller features Settlement growth and scornful insults 2018-06-26
12 Audio in the Mughals Update Franco "Audiomancer" Freda, sound designer at Paradox, on enhancing EU4's audio to today's standards 2018-06-19
11 Truce Mapmode and Suppressing Rebels Adding a truce mapmode, as well as an update to the autonomous rebel suppression mechanic 2018-06-12
10 Charter Trade Companies Investments and Policy Rework Making Charter Trade Companies more worthwhile for all involved, as well as a rework on Policies to make them all more useful 2018-06-05
9 Refining Mission Trees: India and Russia New mission trees for Indian nations as well as the Russian nations in Third Rome 2018-05-29
8 Estates And The Dharma Expansion Changes to the (now free) estates system, new estates for India and a new government form for The Cossacks owners 2018-05-22
7 Mughal Diwans and Charter Trade Companies Culture assimilation for the Mughals and trade charters to aid the colonizer nations gain a foothold around the world 2018-05-15
6 Burma, Bengal, and Tibet Map changes of Southeast Asian area, including Burma, Bengal, and Tibet 2018-05-08
5 Northern India Changes The 2nd DD covering the map changes made to India - this time the northern half 2018-05-01
4 India Map Update New countries and provinces in India 2018-04-24
3 Theocracies and Tribal governments The 3rd part of the exposé on how governments will work in the next expansion 2018-04-17
2 Republican Reforms Continuation of previous diary that shows new reforms for republics 2018-04-10
1 Government Reforms DDRJake, EU4's game director, talking on completely new system of governments in EU4 2018-04-03

Rule Britannia[edit | edit source]

All developer diaries about the Rule Britannia immersion pack and patch 1.25 (aka England).

Patch 1.25 (England)
No. Title and Link Description Date
12 Upcoming Hotfixes Digesting various bug reports and plans further ahead 2018-03-27
11 England Update Changelog for 1.25 England Update 2018-03-19
10 New Achievements New achievements available for unlocking in 1.25 patch 2018-03-13
9 Unit Preview 3D artist Carlberg on New models for Irish minors, Ireland, Scotland, Brittany, revolter tags and a teaser for the music included into the immersion pack 2018-03-06
8 Naval AI changes and Irish ideas Tackling issues and solutions with the naval AI along with some new national ideas for even more Irish nations 2018-02-27
7 Trade Steering, Naval Doctrines and the Low Countries New diplomatic and peace option, new possibilities for navies and new national ideas for the Low Countries nations 2018-02-20
6 Unique Missions for the Isles Unique mission trees added for nations on the British Isles and a modding guide for the new mission system by mikesc 2018-02-13
5 Innovativeness and Knowledge Sharing New additions to technology advancement in the Rule Britannia immersion pack 2018-02-06
4 Anglican Church and Industrialization A unique Christian denomination to appear on the British Isles and the emergence of "latent resources" 2018-01-30
3 Mission Trees DDRjake, EU4's game director, and the tale of the reworked mission system 2018-01-23
2 Around the English Channel Trin Tragula, EU4's content designer, details the map changes made to the regions surrounding the English Channel 2018-01-16
1 2018 and EUIV Firebolt speaks on the role of a product manager, immersion packs, and EU4 plans for 2018 2018-01-09

Cradle of Civilization[edit | edit source]

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

Patch 1.24 (Japan)
No. Title and Link Description Date
21 The 2017 Christmas wrapper A look at 2017 and overview of the EU4 team 2017-12-19
20 Japan Update Changelog Changelog for the 1.24 "Japan" update 2017-12-12
19 Performance and balance changes Late game performance improvements and military balance changes 2017-12-05
18 Japan and the Philippines Additional provinces and tags for Japan while the Philippines receive an overhaul 2017-11-28
Patch 1.23 (Persia)
No. Title and Link Description Date
17 Post Release Patch Post release bug-support in the short term and some planned enhancements in the mid-term 2017-11-21
16 Persia Update Patch Notes A sneak preview of the 1.23 "Persia" patch notes 2017-11-14
15 Additions and achievements Achievements for patch 1.23 revealed along with the last features of the Cradle of Civilization expansion 2017-11-07
14 MP streamlined MP gets several issues sorted with 1.23 - expect a more smooth experience. 2017-10-31
13 Military tidbits and AI updates A 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 1.23 2017-10-24
12 Startup, Missionaries and Modding Startup screens will detail the nation's situation at game start, missionaries can help in subject lands, and Groogy on extending support for modders 2017-10-17
11 Cultures and Religions The addition of cultures and religions to the courtroom as well as special interactions for Mamluk and Iqta governments 2017-10-10
10 Ottomans Extended Restoring the Sultanate of Rûm gains access to the "Ottoman Government", itself extended with Pashas and Janissaries 2017-10-03
9 The Persia Update A closer look on the changes at the Persian region and introduction of the new "Feudal Theocracy" government 2017-09-26
8 Tribal Federations New government mechanics for Tribal Federations infuse changes to the Turkmen sheep nations in the Middle East 2017-09-19
7 Piety and Muslim Schools Islam changes move piety between the Mysticism/Legalism extremes and introduces the Muslim Schools of Law 2017-09-12
6 Trade Policies Use trade policies to promote profiteering, espionage, diplomacy and religion propagation 2017-09-05
5 Army Professionalism Armies get expanded upon with a new "professionalism level" while marching into more "modern" times 2017-08-29
4 Army Drills A partial overview of the new setup of trade goods and a peek at the new "Army drill" mechanic 2017-08-22
3 The Greater Iranian Region Changes in the Persian super-region and new trade goods to be introduced in patch 1.23 2017-08-15
2 Anatolia and the Caucasus Map and general setup changes coming for the Caucasus and Anatolia regions as part of the 1.23 patch 2017-08-08
1 Near East Facelift Changes in the Arabia and Egypt regions for update 1.23 2017-08-01

Third Rome[edit | edit source]

All developer diaries about the Third Rome immersion pack and patch 1.22 (aka Russia).

Patch 1.22 (Russia)
No. Title and Link Description Date
10 EU4 Sound Effects David, the sound designer, on complementing the EU4 interface with the right sound effects 2017-06-27
9 Changing of the Guard Anna "Anona" Norrevik on changes within the team and introduction of the new project lead Linda "Fogbound" Tiger 2017-06-20
8 Third Rome Update The Third Rome (1.22) changelog 2017-06-13
7 Custom Nation Designer and Achievements Jake explains the novelties in the nation designer and introduces new achievements (from his balcony) 2017-06-06
6 Icons and Metropolitans Jake elaborates on the expanded mechanics for the followers of the Orthodox faith 2017-05-30
5 Tsardom New government type comes with new abilities 2017-05-23
4 Russian and Cossacks Changes New government types and abilities for the Russian regions in addition to new content for previous expansions 2017-05-16
3 The Russian Principalities Trin Tragula, EU4's content designer, reveals setup changes in the Greater Russian region coming in 1.22 2017-05-09
2 Bonus Development Diary Sneak peek at features for 1.22, including Press Sailors subject interaction and changes for blockades, marches, Aristocracy ideas, and Buddhism 2017-05-05
1 Historical Research Trin Tragula, EU4's content designer, on the process of historical research done with EU4 and its expansions 2017-05-02

Mandate of Heaven[edit | edit source]

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

Patch 1.21 (Hungary)
No. Title and Link Description Date
21 The 1.21 Hungary Update is coming The 1.21 "Hungary" update changelog 2017-04-25
20 Hungary and Bohemia The "Hungary" update will bring some new things to Hungary 2017-04-18
19 Sailors and Yuan in 1.21 Let's sneak an early peak at 1.21 2017-04-11
Patch 1.20 (Ming)
No. Title and Link Description Date
18 Ming Update The "Ming" update (1.20) changelog preview 2017-04-04
17 Big Bonus One! Details on the changes in the 1.20 patch accompanying the Mandate of Heaven expansion 2017-03-31
16 Breaching that Wall New "Breach" mechanic, Bankruptcy changes and various UI improvements 2017-03-28
15 The Diplomatic Macro Builder Introduction of a vast improvement to perform diplomatic actions 2017-03-21
14 Shintoism New mechanics and ideas for Shintoism 2017-03-14
13 Confucianism Rework of the Confucian religion 2017-03-07
12 The Empire of China Emperor of China 2017-02-28
11 Tributary States New subject type for eastern civilizations 2017-02-21
10 Japan Changes to Japan, a reworked Shogunate government form and new subject interactions for Daimyo vassals 2017-02-14
9 State Edicts New State interface and interactions 2017-02-07
8 Manchurian Banners The Eight Banners of Manchu 2017-01-31
7 Age of Revolutions After enlightenment comes revolutions 2017-01-24
6 Age of Absolutism Absolutism is a new mechanic added for free with the patch 2017-01-17
5 Age of Reformation A detailed look at the 2nd age, the Age of Reformation 2017-01-10
4 Wrapping up 2016 A look at 2016 and a small teaser for what is to come in 2017 2016-12-20
3 Ages of Europa Universalis The next expansion will bring forth a new system called ages 2016-12-13
2 Devastation and Prosperity New values for provinces 2016-12-06
1 Bits and Pieces Just released a patch, slow news day 2016-11-29

Rights of Man[edit | edit source]

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

Patch 1.19 (Denmark)
No. Title and Link Description Date
24 1.19 Beta Feedback We've reverted the Fort Zone of Control changes planned for 1.19 2016-11-22
23 New Unit Models for Vanilla Carlos shares the story of how he decided to remake the vanilla unit models 2016-11-15
22 UI Improvements Interface improvements coming in the "Denmark" (1.19) update 2016-11-08
21 Fort Zone of Control Changes to Fort ZoC in 1.19 and some other things 2016-11-01
20 Denmark "Denmark" (1.19) update brings enhancements to Scandinavian nations and more rules for AI/player replacement (in MP) 2016-10-25
19 Post Release Evaluation What the team like best with Rights of Man + 1.19 teaser 2016-10-18
Patch 1.18 (Prussia)
No. Title and Link Description Date
18 Wrapping Teasers Last 1.18 teasers: an addition to El Dorado, launcher improvements, 20 new achievements and new national ideas 2016-10-04
17 Balance Changes in Patch 1.18 A look at the most important balance changes with a quick explanation on why they were made 2016-09-27
16 1.18 updates older expansions 1.18 brings some overhauls to old expansion features 2016-09-22
15 Bodycount & Minimap Improvement Bodycount screens coming at the end of wars, and you can now see armies on the minimap 2016-09-15
14 Revolutionary Republics Factions New factions for Revolutionary Republics in the Rights of Man 2016-09-08
13 Prussian Monarchy Prussian Monarchy, Disinherit, Abandon PU, Debase Currency and Strengthen Government 2016-09-01
12 Subjects Interactions New Military Focuses for Subjects & new Subjects Interface 2016-08-25
11 Cults Cults are coming to the Fetishists in the next expansion 2016-08-18
10 A Queen Regent Changes to regencies: war declarations and queen regents 2016-08-11
9 Coptic Holy Sites A new blessings and holy cities system for Coptics 2016-08-04
8 Leader Traits Introduction of traits for land and naval leaders 2016-06-30
7 The Ottoman Sultanate The Ottomans get some unique flavor in the upcoming expansion 2016-06-23
6 Ruler Personalities The next expansion will introduce character traits to your ruler 2016-06-16
5 Great Powers With the next expansion Great Powers will be introduced 2016-06-09
4 Culture Changes to how accepted Culture will work in 1.18 2016-06-02
3 Technology Groups Changes to technology groups and technological development 2016-05-26
2 DLC production The DLC producer explains the development process 2016-05-19
1 Future What do we want from the future of the game? 2016-05-12

Mare Nostrum[edit | edit source]

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

Patch 1.17
No. Title and Link Description Date
13 Espionage 1.17 and changes to espionage ideas and fabricating claims 2016-04-28
12 The Team Meet the team and get some preview information on bugfixing patch 1.17 2016-04-21
Patch 1.16
No. Title and Link Description Date
11 Mare Nostrum The goal with Mare Nostrum 2016-04-14
10 Timeline and Achievements Achievements, timeline, Roman Empire formation, new country ideas 2016-03-31
9 Unconditional Surrender Unconditional surrender and map sharing 2016-03-24
8 Condottieri Condottieri - rent out armies to other nations 2016-03-17
7 Naval missions Three new naval missions and changes in naval combat and naval leader pips 2016-03-10
6 Trade leagues Trade leagues and changes to mercantilism 2016-03-03
5 Territories, States and Corruption Overseas mechanic rework and introduction of Corruption 2016-02-25
4 Africa Rework New nations and ideas in Africa 2016-02-18
3 Espionage Rework Spy networks 2016-02-11
2 Naval Reforms Changes to naval aspects (introduction of sailors) 2016-02-04
1 Map Changes Map changes in Ireland and Hungary, Culture changes in Europe and Middle East 2016-01-28

The Cossacks[edit | edit source]

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

Patch 1.15
No. Title and Link Description Date
18 Balance and UI Improvements Changes to Hordes, Spread of Discoveries and UI Improvements 2016-01-14
17 Bugfixing and balance Changes to Estates, Diplomatic feedback and Elective Monarchy 2016-01-07
16 Paradox Pricing Policy Information about the process used to determine price of expansions 2015-12-03
Patch 1.14
No. Title and Link Description Date
15 Random New World II Random New World, Provinces and Scenarios, Dynamic Trade Nodes, Dynamic Naming 2015-11-26
14 New free features Colonial trade goods, Cultural unions, Multiplayer changes and Achievement browser 2015-11-19
13 Threaten war and grants cores, claims and provinces New diplomatic actions for threatening war and granting land to subjects 2015-11-12
12 Espionage, Spoils of War and Fort's Zone of Control New espionage actions, distribution of spoils of war, changes in fort's zone of control, and permanent claims 2015-11-05
11 Convenience and interface improvements Building directly to armies, constructing in subjects, country view improvements, and macrobuilder improvements 2015-10-29
10 Diplomatic Feedback Provinces of interest, attitude, trust and favors, and calling allies 2015-10-22
9 Native Policies and Colonial Wars Policies for colonies, colonial wars, and the conceding of colonial areas in peace deals 2015-10-15
8 Advanced Culture Change, Mercenaries and Naming your Heir Cultures, naming Heirs, Mercenaries and Blocking Canals 2015-10-08
7 Estates Estates system representing internal politics 2015-10-01
6 Steppe Hordes Horde Unity, Razing, Tengri, Horde Units, Returning and Selling Provinces 2015-09-24
5 Ironman and Achievements Ironman and Achievements Rework, Capital Development Discount, Revanchism 2015-09-17
4 Areas and Regions New divisions of the map into areas, regions and super regions; regional naming for enclaves and overseas areas; and coloring of the wasteland provinces for dominant nations 2015-09-10
3 Victory Cards Announcement of the new Victory Cards system, which will help to gain score in multiplayer 2015-08-27
2 Future Nation Designer Improvements Upcoming improvements for Nation Designer including option to save a nation template 2015-08-14
1 A Whole Random New World Announcement of Random New World remake that will be available for all CoP owners 2015-07-09

Common Sense[edit | edit source]

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

Patch 1.13
No. Title and Link Description Date
16 Loading Screens List of the existing loading screen, with the announcement of two new ones (Jan Sobieski and Maurice of Nassau) 2015-08-20
15 Design process Information about how the new features for the game are designed 2015-07-02
14 National Ideas Addition of several missing national ideas planned for patch 1.13 2015-06-25
13 Mistakes of the Past Descriptions of problems with old features: random new world, hotjoin, high altitude lakes 2015-06-18
12 Unavoidable Technical Problems Patch notes for 1.12.1 hotfix. Developer explanation of unavoidable technical problems with release major patches 2015-06-11
Patch 1.12
No. Title and Link Description Date
11 Technology, Gold, Maps... A bit of everything! Changes to technology, economy, forts, and provinces in Europe 2015-06-04
10 Subject Interaction (part 2) New interaction with colonial nations and protectorates 2015-05-28
9 Subject Interaction (part 1) New interaction with vassals, marches and personal unions 2015-05-21
8 HRE and Achievements Revamped authority and reform mechanics for Holy Roman Empire, new achievements 2015-05-15
7 Peace New diplomatic actions, new peace options 2015-05-07
6 Religions New mechanism for Protestantism and Buddhism religions 2015-04-30
5 Free Cities of the HRE Free Cities of the Holy Roman Empire, Remove Electorate, Pause Westernisation, Retire Advisor permanently 2015-04-23
4 Theocracies and Government Ranks New devotion system, unique mechanic for theocracies. New government ranks affecting government bonuses and national focus 2015-04-16
3 Warfare New mechanics for war, including fort overhauls, new looting mechanics, forcelimit changes, and committed armies 2015-04-09
2 Parliament and English Monarchy New government form called English Monarchy. Parliament a new mechanic for constitutional monarchies and constitutional republics 2015-04-02
1 Tall and Wide development Province development characteristic (base tax, base manpower, base production) and new building system 2015-03-27
No. Title and Link Description Date
13 Religions of the East New religion setup for East Asia 2015-06-03
12 Something with more Meath on it The Earldom of Meath 2015-05-27
11 Mighty Sultanate of Hormuz View of Hormuz with province screen of Yazd 2015-05-27
10 Trade Routes of Europe Trade map of Europe with few changes to trade nodes 2015-05-27
9 Forts Preview Presentation of 3D models that will be used to represent fort buildings 2015-05-25
8 Western Mediterranean Changes in the provinces in the Iberia, Italy and North Africa 2015-05-20
7 New Revolter Tags Diplomacy Screens of four new revolter tag nations 2015-05-13
6 Germans Map showing all German cultures 2015-05-13
5 Eastern Europe Eastern Europe and Poland 2015-05-06
4 Frozen Rocks in the Atlantic Sea Tiles changes allowing claims on the Faroe Islands 2015-05-04
3 Balkan Borders Changes in the province borders of the Balkan area 2015-04-29
2 Local Patriotism New culture split for Italy region 2015-04-29
1 Square no more... Shows the region of Prussia with the not square Memel province 2015-04-22

El Dorado[edit | edit source]

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

Patch 1.11
No. Title and Link Description Date
6 Dynamic Random Nations teaser Dynamic random nations mode, that creates custom countries instead of using historical ones 2015-03-04
Patch 1.10
No. Title and Link Description Date
5 Treasure fleets and pirate hunting New treasure fleet mechanic and its associated pirate hunting mechanic, and changes to terrain 2015-02-19
4 Seven Cities of Gold and Colonial Merchants Changes to land exploration, caravan power - a new mechanic for inland trade and dynamic historical events for South Americans and Meso Americans 2015-02-12
3 Inti, Maya and Liberty Desire Introduction to the Inti and Maya religions, and the changes made to liberty desire 2015-02-05
2 The Nation Designer Introduction to the nation designer which enables customized nations 2015-01-29
1 Nahuatl, Exploration & Treaty of Tordesillas The 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 Portugal 2015-01-22

Art of War[edit | edit source]

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

Patch 1.9
No. Title and Link Description Date
12 Disasters, New Ideas and Other Free Features New disasters system and the idea groups added in the patch 2014-12-05
11 New Achievements Information about 20 new achievements that will be added in the patch, mostly focusing on countries that currently lack of unique achievements 2014-11-28
Patch 1.8
No. Title and Link Description Date
10 Achievements, Auto Transport and South America Tenth dev diary about automated fleet transport, miscellaneous mechanics changes, new achievements and the map changes in South America, East Africa, and south Russia 2014-10-24
9 Revolutions, 1618 Bookmark and North America Ninth 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 America 2014-10-17
8 Sorties, Terrain and the Maghreb Eighth 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 Maghreb 2014-10-10
7 Religious Leagues, The Reformation and the Near East Seventh dev diary about the new HRE and reformation mechanics, and map changes in the Near East 2014-10-03
6 Client States, Allied Transports and Central Asia Sixth dev diary about custom client states, allied transports, improved battle displays, and the remapping of Central Asia and Siberia 2014-09-26
5 Diplomacy, Catholics and Southeast Asia & Indonesia Fifth dev diary about diplomacy, revamping the Curia, and map changes to Indochina and Indonesia 2014-09-19
4 Army Builder, Rebel Relocation and China Fourth dev diary about army management, rebels on islands, and East Asian map changes 2014-09-12
3 Military Cooperation, Tradegoods & West Africa Third dev diary about directing allies in war, new trade goods, and West African map changes 2014-09-05
2 Marches, Unrest & Persia Second dev diary about vassals, revolts, and Persian map 2014-08-29
1 Fleets, Autonomy & India A detailed dev diary of the third major expansion 2014-08-22

List of new national ideagroups in patch 1.8.

No. Nations and Links Date
21 Ruthenian, Caucasian, Central Indic, Pacific Northwestern, Sumatran, Swahili, Guajiro, Siberian, Mesoamerican 2014-10-29
20 Client State, West African, Andean, Aymaran, Tupi 2014-10-28
19 Circassia, Lan Xang, Khiva, Bahmanis, Habsan, Jaunpur, Hamburg 2014-10-27
18 Armenia, Wales, Hausan, Guarani, Charrua 2014-10-26
17 Kiev, Naxos, Tapuia, Pomerania, Kazan 2014-10-25
16 Chimu, Muisca, Chachapoya, Teutonic Order, Bulgaria 2014-10-24
N/A England, Castile, Portugal, Austria (changes) 2014-10-23
15 Mughals & Timurids, Ashanti, Mapuche, Inca 2014-10-23
14 Finland, Albania, Polotsk, Perm 2014-10-22
13 Montenegro, Romania, Athens, Gotland 2014-10-21
12 Mossi & Yatenga, Sokoto, Moldavia 2014-10-20
11 Smolensk, Bosnia, Moldavia, Air 2014-10-19
10 Yaroslavl, Pskov, Tarasca 2014-10-18
9 Krakow, Ajuuraan, Ryazan, Tver 2014-10-17
8 Theodoro, Silesia, Danzig 2014-10-16
7 Aztecs, Dahomey, Kanem Bornu 2014-10-15
6 Croatia, Cyprus, Navarra 2014-10-14
5 Majapahit & Sunda, Afghanistan, Wallachia 2014-10-13
4 Georgia 2014-10-12
3 Trebizond 2014-10-11
2 Mogadishu 2014-10-10
1 Provence 2014-10-09

Res Publica[edit | edit source]

All developer diaries about the Res Publica expansion and patch 1.7.

Patch 1.7
No. Title and Link Description Date
3 Elective Monarchy & Rivals Elective Monarchy explained and changes to rival mechanics 2014-07-10
2 Dutch Republic & Ideas Dutch factions added and 3 new idea groups 2014-07-03
1 Merchant Republics / National Focus New governmental mechanics 2014-06-26

Wealth of Nations[edit | edit source]

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

Patch 1.6
No. Title and Link Description Date
10 Balance Changes Changes and improvements to mechanics and balance in 1.6 patch 2014-05-22
9 Policies & Ideas & More Policies added and expanded climate mechanics 2014-05-15
8 Free Features #2 Interface improvements (esp. Macro Build Interface) 2014-05-08
7 Free Features #1 Lots of features expanded in the 1.6 patch 2014-05-06
6 Improved Diplomacy New rival system and trade related CBs 2014-04-24
5 Religion New religion mechanics 2014-04-17
4 Companies and Canals Trade company mechanics and buildable canals 2014-04-10
3 Naval Improvement New naval mechanics 2014-04-03
2 Trade Improvements New trade mechanics 2014-03-27
1 General Information Introduction and design goals 2014-03-20

Conquest of Paradise[edit | edit source]

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

Patch 1.5
No. Title and Link Description Date
10 Post Mortem diary Post-release thoughts on CoP 2014-03-03
Patch 1.4
No. Title and Link Description Date
9 Random free stuff! Features included with patch 1.4 2014-01-10
8 Liberty! Colonial independence mechanics 2013-12-20
7 Colonial Diplomacy Colonial diplomatic rules 2013-12-13
6 Colonial nations Semi-independent colonies 2013-12-06
5 A new way of playing Migrations and federations 2013-11-29
4 American Progression New tech system for Native Americans 2013-11-22
3 The Tribes New North American native countries 2013-11-15
2 Exploring a new world American continent randomization 2013-11-08
1 Finding Paradise Introduction and design goals 2013-11-04

Base game[edit | edit source]

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

Europa Universalis IV
No. Title and Link Description Date
0 Our Vision Design goals 2012-08-31
1 The world is at your feet Map of the world: interface consideration for province shapes, projection, colors, terrain, seasons, and others 2012-09-07
2 The purge & all cards on the table Purging outdated systems and new design ideas 2012-09-14
3 Your envoys are awaiting your orders! Envoys: diplomats, missionaries, merchants and colonists 2012-09-21
4 Your Economy is about to change Income, expenses, stability, no "minting" (as in EUIII), Loans 2012-09-28
N/A 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 2012-10-03
5 The Return of the Kings Rulers, monarchs and power, heirs, advisors 2012-10-04
6 Do you have any idea about it? Idea groups, national ideas, and ideas interface 2012-10-12
7 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 decisions 2012-10-19
8 With God on Your Side? Religion: unique abilities for Catholic, Orthodox, Sunni & Shia, religious unity now visible, and new religion interface 2012-10-26
9 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 mercantilism 2012-11-02
10 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 changes 2012-11-09
11 The Cost & Reward for Technology Technology investment and cost, administrative, diplomatic and military technologies defined; along with a related video developer diary 2012-11-16
12 Dominium Maris Baltici Sweden: strategic possibilities, dynamic historical events (The Dacke Feud and French Wars of Religion), missions, decisions, national ideas; plus stability changes from EU3 2012-11-23
13 FREEEDOM! Rebels, their causes and mitigation: stability, government types, war exhaustion, and overextension 2012-11-30
14 Nobody expects the... Spain: strategic possibilities, events, missions, decisions, and national ideas; plus details on cultural conversion. 2012-12-07
15 Et tu Brute? Milan: strategic possibilities, dynamic historical events (Ambrosian Republic, national ideas, and republican tradition as an analogous mechanism for legitimacy for monarchies 2012-12-14
16 Vive la France! France: strategic possibilities, national missions, decisions and ideas; also brief notes on harsh treatment to curtail revolts and army morale recovery. 2013-01-11
17 Honey, don't you want to talk about it? Diplomacy: new diplomatic interface, opinions and rivals 2013-01-18
18 Sail away with me! Portugal: events, missions, decisions, ideas, and a detail on colonization 2013-01-25
18 Part II - Colonisation Clarification Colonization 2013-01-26
19 War has never been so much fun... Shattering armies, disorganization, combat interface, combat width, flanking, supply limits, attrition, manpower, reinforcement changes, maintenance cost increases. Plus a video: the World Map Trailer. 2013-02-08
20 A Tale of Two Cities The republics of Venice, Genoa, and a link to a video interview of Thomas "Besuchov" Johansson, project lead at Europa Universalis IV. 2013-02-15
21 Leaders & Mercenaries Land units, naval units, leaders, mercenaries; plus a link to an article at Strategy Informer: Paradox Hands-On Special: Master Class 2013-03-01
22 A.E.I.O.U Austria: 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) 2013-03-08
23 Tell me sweet little lies... Coalitions, relations (improve relations and insults, overextension and coring provinces. 2013-03-15
24 Heir of Rome Ottoman Empire: strategic possibilities, events (including a series of events for the provincial system and the Janissaries), national ideas; plus a feature on Westernization 2013-03-22
25 Anna Karenina Wargoals, peace options, peace interface; plus April Fool's: "EUIV, The Musical!" (songs to download and a video) 2013-04-05
26 A smoke and a pancake? A look at Burgundy and the Low Countries 2013-04-11
27 An offer you can't refuse Spy ideas and diplomatic covert actions: fabricate claim, infiltrate administration, sow discontent, sabotage reputation, support rebels, and changes to rebels 2013-04-18
28 A Kinderegg! Three in one! Scotland, The Hansa, and the Reformation 2013-04-26
29 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 arms 2013-05-03
30 Four more countries and even more... The Mamelukes, Persia, Timurids, Oman; video link to the call to arms 2013-05-10
31 A Point of Honor Japan: Daimyos and the Shogunate, unification, events, ideas, and a discussion of the new scoring system; plus links to the call to arms and to download the songs of the EU4 musical 2013-05-17
32 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" 2013-05-24
33 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 2013-05-31
34 Unit interfaces and more Changes to unitview, and the need for military power (MP) for special actions:; also a note on forced march and Berber culture national ideas 2013-06-07
35 Alt for Norge! Denmark, Norway, and a brief look at sieges 2013-06-14
36 Hot States in the Holy Roman Empire Quick look at the start positions and national ideas of Brandenburg, Bavaria, and Bohemia 2013-06-20
37 Aragon, Naples and Korea National ideas for Aragon, Naples and Korea 2013-06-28
38 Ayutthaya, Viyanagar & Muslim Sultanates A look at the national ideas major powers in the Indian subcontinent: Ayutthaya, Viyanagar, and the Indian Sultanates 2013-07-05
39 Divine Tactics Fleet basing rights, enforce peace, and Christian Theocracies 2013-07-12
40 What is our mission? Missions, decisions, achievements and Ironman mode. Plus links to the initial videos of an England game play-through by Quill18 2013-07-19
41 What we all waited for! National ideas of central Europe: Poland, Lithuania, Hungary 2013-07-26
42 The Crusader Kings II Converter Article and video developer diary of how the Europa Universalis 4 Save Converter DLC will work; plus saved games will be brought in as a mod 2013-07-31
43 Artificially Improved Changes 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 2013-08-01
44 Newbie Friendly Describes changes to the ledger, hints system, production interface, tutorial 2013-08-01
45 A very small development diary Demo 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) 2013-08-05

Videos[edit | edit source]

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

No. Title and Link Description Date
1 Developer Walkthrough Thomas Johansson, project lead for Europa Universalis IV shows off this new game from Paradox Interactive. 2012-11-09
2 Technology Changes shown off 2013-02-13
3 Religion Delved into in detail 2013-07-01
4 Exploration Developer diary from Thomas Johansson about how to colonize as an option for more nimble powers 2013-07-15
5 Warfare Project Lead Thomas Johansson describes the nuances of war strategy; A Guide to Conquering Nations the Old-fashioned Way 2013-07-25
6 Converter Tool Highlights How the Crusader Kings II-to-EUIV converter DLC will work; saved games will be brought in as a mod 2013-07-31
7 Conquest of Paradise Livestream Highlights Project Lead Thomas sits down with Matt to discus the first expansion for Europa Universalis IV 2013-11-08
8 Conquest of Paradise - Native Americans Studio 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 peoples 2013-12-12
9 The History of Historical Strategy Highlighting 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 2014-04-30
10 Europa Universalis IV: Wealth of Nations Video Developer Diary #1 Project 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 2014-05-16
11 Paradox Live 0010 - The Art of War Europa Universalis IV, Art of War is coming, lets sit down with Martin and talk about it 2014-09-13
12 The Art of War - Feature Highlights We sat down with Wiz to talk about the upcoming expansion for Europa Universalis IV, Art of War 2014-09-23
13 Europa Universalis IV: Art of War Video Developer Diary Martin "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 2014-10-10
14 The Art of War - Features 2 Highlights There's smoke on the horizon, war is brewing; so here are the highlights for Art of War to get you up to speed on the mechanics in this expansion 2014-10-20
15 The Art of War - Feature 3 Highlights We needed to do a third feature presentation for Art of War to cover the final bits that we needed to cover 2014-10-29
16 Paradox Live 0017 - A reply to Arumba Earlier this week, Arumba posted a video about how to improve Europa Universalis IV in twelve minor ways; the video can be found here: 2014-11-27
17 Paradox Live 0018 - EUIV Patch 1.9 and free features We're working on the 1.9 patch for EU4, this patch includes both bug fixes and a content update 2014-12-04
18 El Dorado - Feature Spotlight Project 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. 2015-02-24
19 Common Sense - Feature Spotlight In this video, Project Lead Martin Anward gives us his insights of the expansion 2015-06-04
20 Cossacks - Feature Spotlight Paradox Walks You Through Major Improvements 2015-11-24
21 Mare Nostrum #1 - Map Changes & Trade Leagues DDRJake and BjörnB cover some of the new content in Mare Nostrum 2016-03-08
22 Mare Nostrum #2 - New Ideas & Timeline DDRJake and BjörnB cover some of the new content in Mare Nostrum 2016-03-15
23 Mare Nostrum #3 - Condottieri DDRJake covers some of the new content in Mare Nostrum 2016-03-22
24 Mare Nostrum - Feature Spotlight Johan Andersson goes over the features in the coming EU4 expansion, Mare Nostrum 2016-03-23
25 Mare Nostrum #4 - Kuba Luba DDRJake and BjörnB play-test Mare Nostrum as Luba in the new regions added to Africa 2016-03-29
26 Mare Nostrum #5 - Countdown to Launch DDRJake play-tests some of the new content in Mare Nostrum just before release 2016-04-05
27 Rights of Man #1 - Reveal Stream Johan Andersson and cKnoor l reveal the next expansion for EU4 at GamesCom 2016-08-19
28 Rights of Man #2 - Institutions, Tech & more Johan Andersson and DDRJake on the overhauled technology system in EU4 2016-08-31
29 Rights of Man #3 - Queens, Regencies & more DDRJake expands on queens and reworked regency system 2016-09-07
30 Rights of Man #4 - Great Powers, Subjects & more DDRJake explains advantages of being a great power and improvements to subjects 2016-09-14
31 Rights of Man #5 - Leader traits, Copts & more Johan Andersson and DDRJake on military traits and unique co-op like mechanics for the Coptic religion 2016-09-21
32 Rights of Man - Feature Spotlight Johan Andersson goes over the features in the coming EU4 expansion, Rights of Man 2016-10-07
33 Mandate of Heaven #1 - Empire of China, Tributaries & Manchu Banners DDRJake goes over the China region and the new mechanics added there 2017-03-14
34 Mandate of Heaven #2 - Ages DDRJake and Johan Andersson and the separation of time in EU4 1.20 2017-03-21
35 Mandate of Heaven #3 - Diplomatic Macro-Builder DDRJake on the Quality of life improvement that is the "Diplomatic Macro-Builder" 2017-03-24
36 Mandate of Heaven #4 - Japan DDRJake goes over the mechanic changes done in the Japanese region 2017-03-28
37 Mandate of Heaven - Feature Spotlight Jake Leiper goes over the features in the coming EU4 expansion, Mandate of Heaven 2017-03-30
38 Third Rome - Feature Stream Jake demonstrates the features in the upcoming EU4 immersion pack, Third Rome 2017-05-30
39 Cradle of Civilization - Feature Spotlight Jake Leiper details the features in the upcoming Cradle of Civilization expansion and the 1.23 "Persia" update 2017-10-24
40 Rule Britannia - First Look Jake Leiper with a first look at EU4's Rule Britannia immersion pack and the 1.25 "England" update 2018-02-06
41 Rule Britannia - What's New? Jake Leiper with more details on the upcoming features of Rule Britannia and the 1.25 "England" patch 2018-02-27
42 PDXCon 2018 - Past, Present, and Future of EU4 Jake Leiper, Game Director of EU4, talks about the past, the present, and the future of EU4 2018-05-20
43 Dharma - Feature Spotlight Jake Leiper goes over the new features and changes coming in the Dharma expansion and the 1.26 "Mughals" update 2018-09-04
44 Golden Century - First Look Jake and Rodrigue with a short look at the new Golden Century immersion pack 2018-11-21
45 Manchu 1.29 - What's New? DDRJake and neondt go over all the details in the free 1.29 "Manchu" update 2019-09-17
46 Europa Universalis 20th Anniversary - The Documentary Documentary video for the EU franchise's 20th anniversary 2020-10-22
47 Europa Universalis IV - 8th Anniversary Trailer Video for EU4's 8th anniversary 2020-08-12
48 Universalis IV: Tutorial For Complete Beginners with MordredViking #1 - The Basics Tutorial video for EU4 beginners 2021-09-30

See also[edit | edit source]