Developer diaries

Topic

Version history

Lions of the North

1.34 • 1.34.3 • 1.34.4 • 1.34.5

Origins

1.33 • 1.33.3

1.32 • 1.32.1 • 1.32.2

Leviathan

1.31.4 • 1.31.5 • 1.31.6

1.31 • 1.31.1 • 1.31.2 • 1.31.3

Emperor

1.30.4 • 1.30.5 • 1.30.6

1.30 • 1.30.1 • 1.30.2 • 1.30.3

Golden Century

1.29.4 • 1.29.5 • 1.29.6

1.29 • 1.29.1 • 1.29.2 • 1.29.3

1.28 • 1.28.1 • 1.28.2 • 1.28.3

Dharma

1.27 • 1.27.2

1.26 • 1.26.1

Rule Britannia

1.25 • 1.25.1

Cradle of Civilization

1.24 • 1.24.1

1.23 • 1.23.1

Third Rome

1.22 • 1.22.1 • 1.22.2

Mandate of Heaven

1.21 • 1.21.1

1.20 • 1.20.1

Rights of Man

1.19 • 1.19.2

1.18 • 1.18.2 • 1.18.3 • 1.18.4

Mare Nostrum

1.17 • 1.17.1

1.16 • 1.16.2 • 1.16.3

The Cossacks

1.15 • 1.15.1

1.14 • 1.14.1 • 1.14.2 • 1.14.3 • 1.14.4

Common Sense

1.13 • 1.13.1 • 1.13.2

1.12 • 1.12.1 • 1.12.2

El Dorado

1.11 • 1.11.1 • 1.11.2 • 1.11.3 • 1.11.4

1.10 • 1.10.1

Art of War

1.9 • 1.9.1 • 1.9.2

1.8 • 1.8.1

Res Publica

1.7 • 1.7.3

Wealth of Nations

1.6 • 1.6.1 • 1.6.2

Conquest of Paradise

1.5 • 1.5.1

1.4 • 1.4.1

Base version

1.3 • 1.3.1 • 1.3.2

1.2 • 1.2.1 • 1.2.2

1.1 • 1.1.1 • 1.1.2 • 1.1.3

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

Domination

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Other

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

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

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

Other

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

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

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

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

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

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

Videos

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: https://www.youtube.com/watch?v=xAHCRTSGdLw	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

• Dev Clashes