It also substantially expands the cultural diversity and number of provinces in Ireland and Africa, adds the ' corruption' mechanic for inefficiently-run nations, and introduces the State/Territory divide as another wrinkle when it comes to expanding.

Mare Nostrum, released in April 2016, primarily reworks naval combat and espionage.

The Cossacks, released in December 2015, with a focus on Eastern Europe, new diplomacy features, and improved internal politics centered on managing the Estates of the Realm, as well as several multiplayer-oriented features.

Common Sense, a development-focused expansion coming with a major overhaul of the base tax system as well as new features for Protestants and Buddhists, released in June 2015.

El Dorado, a Mesoamerica and colonization-focused expansion, including a new Nation Designer, released in February 2015.

The Art of War, a military-focused expansion released in October 2014, also coming with a free patch that brings a far more detailed map for the non-European parts of the world.

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