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Release date / Patch
2021-04-27 / 1.31

Store: Expansion

Leviathan is the 14th expansion for Europa Universalis IV. It was announced on 2021-02-09[1] and has been released alongside patch 1.31 on 2021-04-27.

Expansion featuresEdit

Picture a capital city that shines like a gemstone, improved by the wealth drawn from the hinterland - decorated by riches demanded from vassals. A capital not of a mighty territorial empire, but of a compact and concentrated state that can still use gold and favors to influence neighbors and rivals. Picture it and then make it so in Europa Universalis IV: Leviathan.

Get new tools to centralize and accumulate power for your country. New diplomatic actions give you the means to go up against mightier counterparts and new economic tools will allow you to establish rich vassal empires that draw wealth and development to your monumental capital city. Leviathan also brings new improvements to other core areas of the game, such as colonies and regencies.

  • Ask for Favors: Curry favors with other nations and use them to advance diplomatic goals.
  • New Regency Options: Regency councils represent the interests of the most powerful estate, and can be extended to delay the ascension of an unfit monarch.
  • Specialized Colonial Nations: Let your colonies focus on military help, trade power or self-government.
  • Concentrate Development: You can now steal development from your vassals or territorial possessions to enhance the power of your capital city.
  • Pillage Capital: Loot an enemy capital as a condition of peace, hauling development back to the capital metropolis.
  • Expand Infrastructure: Provinces can expand their capacity to build new structures and manufactories, allowing smaller nations to create centers of wealth for a modest cost.
  • Centralize State: Reduce the cost of government by spending unused Reform points.
  • Totemism: Nations that follow the Totemist religion can revere a pantheon of past leaders, earning bonuses that reflect the skills they had in life.
  • Monuments: Expand and establish great projects, adding new bonuses to your empire.
  • New Unit Models: New army sprites for Southeast Asian nations, including Indochinese, Indonesian and Polynesian nations.
  • And more: Including the ability to carpet siege enemy provinces, draft transports as a plutocratic nation, watch heirs gain legitimacy as they wait to inherit the throne and other changes.

Free featuresEdit

The free major update includes:

  • Rework of North American natives mechanics (reworked/expanded feature from   Conquest of Paradise expansion).
  • Rework to the Southeast Asian and Australasian maps.
  • New nations, new cultures and new religions. This fascinating region of powerful monarchs and rich merchants takes on new color and offers new ways to play.
  • New idea groups for Theocracy, Steppe Hordes and Natives.
  • Huge naval rebalance
  • Canal changes


Cinematic trailersEdit

Europa Universalis IV: Leviathan story trailer. Not everything has to be brute force. Armies are necessary, of course, but there are other ways to succeed. Build a force of diplomats, for example, and use your flattery as a weapon against others. Or draw wealth and power from the remote regions of your realm to construct a metropolis to be the engine of your economy. Try many new routes to global power in Europa Universalis IV: Leviathan.
Europa Universalis IV: Leviathan announcement trailer. The expansion offers new tools that allow you to play "tall" with smaller and more focused realms with a few centers of power. It also has a host of other changes to well-established game features like regencies and colonies.

Dev diariesEdit

Main article: Developer diaries

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