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Released on 2014-01-14.
- Option to generate and play in a random New World
- New expanded mechanics for Native Americans
- Ability to play as one's Colonial nation
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Released on 2014-05-29.
- Covert diplomatic actions to create trade conflicts
- Introduction of state-sponsored pirates, also known as privateers
- Designation of a specific port as the main trade capital
- Improved trading in inland nodes
- Introduction of trade companies
- Hindu rulers can pick personal deities
- Reformed "Fervor": Reformed nations can gain and spend fervor points on a Military, Diplomatic and Trade bonus
- Buildable Canals: Now possible to build the Kiel Canal, the Suez Canal and the Panama Canal.
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Released on 2014-07-16.
- Unique mechanic for Dutch Republics, balancing the Orangists vs the Statists.
- Dictatorships are now special cases in a Republic when tradition goes too low, and can then last the rest of that rulers life.
- New faction system for Merchant Republics
- Merchant Republics can now place trading posts in each trade node, to boost their trade power.
- New diplomatic actions for/against Elective Monarchies
- National focus: Change monarch power priorities, improving one aspect on the expense of the other two. (Note: also in Common Sense)
- Lots of new events for Dutch Republics, Merchant Republic Factions, Elective Monarchies & Dictatorships.
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Released on 2014-10-30.
- Expanded mechanics for the 30 Years War with religious league wars in Europe.
- Expands the Napoleonic Era: Fight for or against the revolution, create custom client states.
- Improves diplomacy options: Sell surplus ships, use subjects' CB, declare war in support of Rebel factions and new peace options.
- New options for waging war: Sortie from sieges, and give objectives to partners in war.
- Other gameplay enhancements: Turn vassals to Marches, abandon cores, army/navy build templates, mothball fleets.
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Released on 2015-02-26.
- Custom Nation Designer and random nations
- New native religions with unique mechanics
- Expanded/Revamped exploration mechanics: take missions to Hunt for the Seven Cities of Gold or Circumnavigate the Globe
- New Gold Fleets that can be pirated by privateers
- Send the trade fleet to counter-privateer missions
- Papal Treaty of Tordesillas to protect colonial rights
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Released on 2015-06-09.
- Parliaments for the English crown and constitutional governments
- Expanded religious mechanics for Protestant and Buddhists nations (national churches and Karma)
- New subject interactions
- Introduced government ranks
- New government mechanics for Theocracies and Free Cities
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Released on 2015-12-01.
- New Estates: 3 New estates to deal and manage in the realm -- the Cossacks, the Dhimmi, and the Tribes.
- New Cossack Government: The Cossacks receive a new government form with unique interactions.
- Diplomatic Feedback: Manually set the attitude towards AI nations, designate provinces you want, entice allies with the promise of land for their support.
- Tengri: New religion mechanics focusing on Syncretism, allowing Tengri nations to choose and tolerate a secondary religion as if it were a national faith and treated by others as if holding that religion.
- Horde Unity and Razing: Hordes can raze territories they conquer to get monarch points and raise horde unity or risk a tribal uprising.
- Advanced Culture Change: Adds the ability to choose what culture you want to convert a province to from any neighboring culture, or restore the original culture of the province.
- Native Policies: Adds the ability to set your policy towards the natives in your colonies, allowing you to focus on trade, assimilation, or subjugation.
- Improved Espionage: Two new spy actions allowing you to study the technology of more advanced countries and agitate for liberty in your enemies subjects.
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Released on 2016-04-05.
- Advanced Naval Missions: New mission system simplifies fleet management
- Barbary Pirates: The Barbary Coast nations of North Africa can raid other nation's coastlines for gold and sailors conscripts
- Condottieri: Nations can rent their armies out to fight in other people's wars
- Espionage: New spy actions to harass your enemies and having passive benefits from spy networks
- Share Maps: Nations can share maps with each other or simply steal them
- Trade Leagues: Merchant Republics can create trade leagues enabling mutual defense and mutual profit
- Plus; Timeline replay, Promote Mercantilism, Counter-espionage and more.
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Released on 2016-10-11.
- Great Powers: The most developed nations have access to new diplomatic options to bully or entice weaker neighbors
- Personalities and traits for monarchs and military leaders will add bonuses to your nation or assist you in battle
- Queens can be generated by royal marriages, and serve as regents if an underage heir ascends to the throne
- Subject nations can be given more detailed military instructions on how to behave at war
- Fetishist nations can choose from a number of cults, uncovering new options as they wage war and make alliances
- Coptic nations will be tasked with preserving their faith through the control of holy sites throughout the near east
- Ottoman Empire gets a unique new government form with new Harem Politics events
- Plus; new faction system for Revolutionary Republics, the ability to abdicate, building in subject states, debasing currency for quick cash and more.
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Released on 2017-04-06.
- Historical Ages and Golden Eras: Meet objectives in four historical ages from the Age of Discovery to the Age of Revolutions, earning new bonuses and powers for your country. Declare a Golden Era to further increase your chance of success.
- Chinese Empire: New mechanics for Ming China, including Imperial Decrees and Imperial Reforms to bolster the Dragon Throne.
- Tributaries: Force your neighbors to pay tribute to your Chinese Empire, paying you in gold, manpower or monarch points.
- New Japanese Rules: Daimyos now owe loyalty to the Shogun – and the Shogun is whomever controls the imperial capital of Kyoto. Compel the loyalty of your daimyos with new interactions that require them to submit to your authority, contribute to your power or even commit seppuku.
- Manchu Banners: Rally the Manchu warlords around your throne and call up the traditional banners to reinforce your army.
- Diplomatic Macro-builder: Common diplomatic actions are now easily available from the macro-builder interface.
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Released on 2017-06-14.
- Tsardoms and Principalities: New ranks of Russian government with new abilities and, for Tsars, strong bonuses including the right to claim entire states.
- Iconography: Commission great religious icons for the Orthodox church, boosting your empire’s power depending on the saint you choose to revere.
- Metropolitans: Consecrate highly developed provinces with Metropolitans, adding to the authority of the Orthodox church, but for a cost.
- Streltsy: Special Russian soldiers that excel in combat, but raise the cost of stabilizing your empire.
- Siberian Frontier: Russian nations can slowly colonize uninhabited border regions, with no fear of native uprisings.
- New Russian Missions: Exclusive mission trees for Russia/Muscovy, Novgorod, and Russian Principalities.
- Third Rome Content Pack: Adds 48 new unit models to nations in and around the Russian borders.
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Released on 2017-11-16.
- New Governments: Powerful decisions related to each of the special government types of the Middle East, including unique mechanics for the Egyptian Mamluk Government, Persian Theocracy, Tribal Federations, and the heirs to Timur.
- Trade Policies: Activate your merchants in trade nodes for special missions – promote profiteering, espionage, military, diplomacy, and religion propagation.
- Islamic Schools: The wide range of Muslim disciplines offer unique perks to their disciples and transforms international relations across the Middle East.
- Army Professionalism: Drill and discipline your armies as you move from the age of mercenary captains to the mass levies of standing armies.
- Exploit Development: Reduce the strength of your provinces for a quick influx of cash or manpower, stripping your nation's future for immediate gain.
- Iqta Taxes: Muslim governments can impose new taxes every 20 years for special bonuses.
- Ability to directly convert subject's provinces to their state religion
- And more: Changes to national ideas, missionary actions, Turkish Janissaries and many other game mechanics.
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Released on 2018-03-20.
- New British Missions: New exclusive mission trees for England, Scotland and Ireland.
- Industrial Revolution: Highly developed provinces may produce coal in the late game, fueling higher productivity and greater wealth.
- Innovativeness: Earn rewards for being the first nation to unlock new knowledge, including lower power costs.
- Naval Doctrine: Adopt a general strategy for your fleets, giving you bonuses to ship maintenance, trade power or battle performance.
- Anglicanism: A new Protestant faith can appear in England with new bonuses and religious choices.
- Knowledge Sharing: Help your lagging allies or subjects by promoting the spread of institutions in their realms.
- Rule Britannia Content Pack: New unit models for British nations, including regional Irish units and revolting nations like Northumberland or Cornwall.
- Rule Britannia Music Pack: Our composers have been hard at work writing new songs to quiet the stormy seas of commerce.
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Released on 2018-09-06.
- Design Your Government: Unlock unique reforms that will define how you govern your kingdom or republic, earning free policies and boosting the power of some estates.
- Enhanced Policy System: Special bonuses that make the policy system even more attractive.
- Trade Company Investments: Upgrade and improve the provinces tied to your trade companies, conferring bonuses both to the European master and neighboring Indian nations.
- New Indian Mission Trees: Unique mission paths for the most important Indian sultanates and kingdoms.
- New Indian Estates: India gets five new castes, raise the Brahmins to reduce unrest in a province or install Jain governors for a boost to income while reducing manpower.
- New Mughal Culture Bonus: The Mughal Empire can assimilate and accommodate newly conquered cultures with ease.
- Charter Companies: Europeans can buy a foothold into trade charter zones in Africa and Asia, if they can find a prince that trusts them.
- Upgraded Trade Centers: Invest in the development of your Centers of Trade.
- And more, including: new ways to suppress rebellion, the monsoon season, new uses for colonists in non-colonial development, scornful insults, multiplayer teams, new art, and more.
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Released on 2018-12-11.
- Minority Expulsion: Settle your distant colonies with homeland minorities, promoting greater cohesion at home, while adding more diversity to your subject nations.
- Establish Orders: Iberian nations can appoint Jesuit, Franciscan or Dominican clerics to govern their states to reduce unrest or ease conversion.
- New Mission Trees: New missions and objectives for the nations of Iberia and Northwest Africa, including Spain and Andalusia.
- Pirate Republics: Play as or combat against pirate nations in dangerous sea zones, with their own flavor and game style.
- Flagships: Appoint a Flagship to lead your navy, adding combat and trade power to your fleets.
- Naval Barrage: Use your ships to help besiege coastal forts by bombarding the walls.
- Golden Century Content Pack: New unit and ship models for nations in the Iberian peninsula, Berber and pirate nations.
- Golden Century Music Pack: 10 minutes of original music inspired by the discovery of the New World.
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Released on 2020-06-09.
- A Powerful Pope: Appoint cardinals, publish Papal Bulls and gather tithes. The Vatican and Papal Controller now have new abilities to sway the souls of Christendom.
- New Holy Roman Empire System: Imperial Incidents provide new challenges to the Emperor's power and authority. Will your empire follow a course to a centralized monarchy or decentralized federation?.
- Revolutions Revamped: The spirit of Revolution is a contagion that must be either embraced or vigorously opposed. Use the guillotine and revolutionary guard to enforce the new way of thinking.
- The Hussite Faith: Bohemia has an early game chance to embrace heresy and stand alone against the Pope until The Reformation.
- Hegemonies: If you accomplish great feats, you should expect great rewards. Seize the mantle of honor for accumulating great wealth and armies.
- New Missions: Over 20 new unique mission trees for a variety of European nations
- Defender of Faith: With great responsibility comes great power. Earn more bonuses for defending a major religion than for defending a small one.
- The Council of Trent and Counter-Reformation: Join other Catholic rulers to slow down the spread of the Reformation by making concessions to the unruly mob or harshly imposing the will of God.
- Provoke Rebellions: Risk a larger rebellion now while you think you can manage it instead of waiting for discontent to take its course.
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For music, cosmetic packs or e-books see Downloadable content 2.
Europa Universalis IV game and the following expansions: 
