欧陆风云4DLC

评语：Conquest of Paradise focuses on the New World. It adds an expansion to the mechanics of tribal nations, most prominently Native American ones. It also adds a random new world generator which randomizes the landscape of North and South America. The accompanying 1.5 patch also added colonial regions, protectorates and new starting nations as well as many other small additions and fixes. It was released 11 January 2014.

评语：Wealth of Nations, named after the book by Adam Smith, includes new mechanics for trade and merchant republics. The most prominent additions also include trade companies, privateering, and construction of the Suez, Panama, and Kiel canals. The accompanying 1.6 patch included a new rival system, policies, and extra ship designs. It was released 29 May 2014.

评语：Res Publica focuses on governance and trade. New mechanics pertaining to elections are introduced, along with election events for the Dutch republics and a national focus. The Republican Dictatorship form of government is also included. The accompanying 1.7 patch included extra idea groups and Merchant Republic factions. It was released on 16 July 2014.

评语：Art of War This expansion focuses on military mechanics. It expands on the Thirty Years' War and the Napoleonic era, improves diplomacy (especially surrounding conflict and peace treaties), expands vassal mechanics and adds new options for waging war. The accompanying 1.9 patch amongst other things overhauled rebel mechanics, improved the map and added large interface, AI and gameplay improvements. The map improvements increased the number of provinces on the game map, in regions which previously lacked detail, such as Asia and Africa. It was released on 30 October 2014.

评语：El Dorado, named after the mythical El Dorado, improves largely on the nations of Central and South America. This includes Nahuatl, Inti and Mayan religions, a "doom counter" for the Central American tribes, improved mechanics and added events. Exploration and colonisation of these areas is also expanded upon - for example, the Treaty of Tordesillas is added and conquistadors can explore into terra incognita to search for the Seven Cities of Gold. A custom nation designer is included. The accompanying 1.11 patch included new events for South and Central America, improved terrain and general improvements to gameplay. It was released on 26 February 2015.

评语：Common Sense, named after the famous pamphlet written by Thomas Paine, focuses on diplomacy, religion and internal development. New religious gameplay is added, focusing on Protestants and Buddhists. Parliaments are added, and a special parliamentary government is granted to England. The coinciding 1.13 patch included new religions, improvements to the peace system and a reworking of the fort system. The number of building slots were also decreased, but the existing ones made more powerful. It was released on 9 June 2015.

评语：The Cossacks, named after the Cossacks of the Ukraine, Poland, and Russia, adds additional diplomacy options and a wide variety of internal politics for peacetime. Primarily this is represented through the "Estate" system, which allows provinces to be assigned noble landholders, the church, burghers, and more in return for various bonuses and modifiers. Additionally, The Cossacks adds mechanics for horde government types and adds mechanics to the Tengri religion. It was released on 1 December 2015.

评语：Mare Nostrum, translated as "Our Sea" in Latin, was the Roman name for the Mediterranean Sea. As its name suggests, this expansion introduces new content connected to naval warfare, trade and espionage. Now one can put ships on a naval blockade mission or on a hunting naval mission. One can also create trade leagues, offer Condottieri to other countries to fight and a new timeline feature where one can at any point through the campaign click it and watch how the world has evolved throughout the game. The accompanying 1.16 patch made significant changes to espionage, added new map modes, two new systems for states, territories, and corruption, as well as various new provinces for Ireland and Africa. It was released on 5 April 2016

评语：Rights of Man is the ninth expansion for Europa Universalis IV. It was announced on 19 August 2016. It was released on 11 October 2016 along with the 1.18 "Prussia" patch. The DLC and patch included a new Great Powers system where the eight most powerful nations were listed as "Great Powers" and could access new diplomatic features such as making minor nations break their alliances with other Great Powers. The patch also included new governments for Prussia and the Ottoman Empire, and a massive reworking of the technology system called the Institutions, which add penalties to any nation which hasn't embraced a given institution (such as Feudalism, Renaissance, etc.), and made the process of 'westernization' obsolete.

评语：Mandate of Heaven, named after the ancient Chinese political concept, focuses on improving the East Asian region and contains new mechanics for Ming China, along with the ability of surrounding states to claim the title of the Chinese Emperor. There are also new Chinese meritocracy mechanics, the ability of Manchu tribes to raise banners, and a new Japanese shogunate system with events that allow Japan to become more isolationist or open in character. Outside of East Asia, there are now 'Ages' that focus gameplay on distinct historical periods in the Early Modern era, including Ages focusing on the European discovery and colonization of the Americas, the Protestant Reformation and religious conflict in Europe, French-style political absolutism, and the 18th century revolutions occurring in France and the Americas. The free 'Ming' 1.20 patch includes a new absolutism mechanic along with a province devastation feature. The expansion was released on 6 April 2017

评语：Third Rome is the eleventh expansion (Immersion DLC) for Europa Universalis IV. Announced on 12 May 2017, it focuses on the Russian nations, Orthodox religion and Siberian territories. It also introduces new ranks of Russian government along with new abilities. One of the main features the DLC adds is Siberian Frontier Russian nations can slowly colonize uninhabited border regions, with no fear of native uprisings.. This feature is only available for countries in the Russian territories. Third Rome was released on 14 June 2017 along with the free 1.22 "Russia" patch

评语：Cradle of Civilization is the 12th expansion for Europa Universalis IV.[18] It was announced on the 3rd of October 2017. The expansion revamped the Middle East region by adding new provinces, countries, events, drilling your armies, and more. Cradle of Civilization, along with the free 1.23 update, was released on 6 November 2017.

评语：Rule Britannia is the 13th expansion for Europa Universalis IV. It was announced on the 6th of October 2017. It will be released on the same date as the 1.25 update, which adds provinces to Ireland, England, Northern France, and the Low Countries. The DLC adds a new religion, Anglicanism, missions, knowledge sharing, and many other features.

评语：Dharmais the upcoming 14th expansion for Europa Universalis IV. It was announced on the 19th of May 2018.Dharmaadds government reforms, a reworked policy system and new features relating to South Asia, trade companies and estates.

评语：Golden Century was announced on 21 November 2018, and released on 11 December 2018. This expansion focuses on Iberia, The Maghreb, Central America, and colonization.

评语：The new expansion is going to focus on Europe and feature a large-scale mercenary rework, touches on Catholicism and the Holy Roman Empire and include extensive map changes from France to the Balkans, and a rework of the revolutionary country event system.[20] This expansion will also contain and solve some previous bugs in the game from earlier DLC's, with a free update near the release date of the DLC.

评语：Leviathan, named after the book by Thomas Hobbes, will be focused on playing as "smaller, more focused" nations. The accompanying 1.31 patch will provide map and gameplay overhauls to Southeast Asia and Oceania regions.