This article has been verified for the current version (3.3) of the game.
DLC selection screen in the launcher
Downloadable content (DLC) is content built by Paradox Development Studio (PDS) as an extension or add-on to Crusader Kings II. They are modular in nature, which means that a player can choose to play with or without a given DLC by checking them out at the launch menu. An expansion DLC is normally accompanied by a free patch that gives players most of the new content as not to hinder the playability of the game. As such, most DLCs are seen as optional content for players who wish to have a better gaming experience in exchange for some monetary support.
Multiplayer games also benefit from this compatibility, that is to say if the host has a gameplay DLC (expansions and flavor packs) the player does not, the game acts as if the player has it.
Further details on a specific title may be available by clicking on its banner or icon.
Table sorting can done via the main column for alphabetical order or the column for chronological order.
The base game is required for any and all DLC relating to the game. While cosmetic/music DLCs can be used with any game version, content DLCs can't be used prior to the version they were released with.
Explore the Intricate Faction System: Join a faction to put pressure on your liege and to keep track of factions in your own realm.
Raise Standing Armies: You will now be able to use retinues to have standing armies in your domain. The size is determined by technology.
Experience Factional Revolts: No more easily defeated rebellions. Disgruntled vassals will now band together in revolt against your rule.
Appoint Orthodox Patriarchs: Orthodox kingdoms and empires can now control their own heads of religion instead of being dependent on the patriarch of Constantinople.
Streamlined Mobilization: You will always raise a single, larger levy from your direct vassal; no need to worry about the opinions of the lower vassals.
Leader Focus: Appoint your generals wisely, their traits & skills are now of vital importance on the field of battle. More commander traits are now added to increase the importance of your choice of military leaders.
Explore Byzantine Events & Decisions: Legacy of Rome includes many specific events & decisions to make the Byzantine Empire come alive.
Improve Your Ruler: You can now actively strive to improve your skills or traits through the new Self Improvement Ambitions.
Set a Focus (a "way of life") for your character to give them an immediate skill boost, develop their abilities and determine the kind of events and decisions they tend to get (there are ten of these focuses: Rulership, Business, Hunting, War, Family, Carousing, Seduction, Intrigue, Scholarship and Theology.)
Hundreds of new events and 20 new images.
Many new diplomatic interactions: Duel, Seduce, Banish to Monastery, Break up with Lover, etc.
New Central Asian cultures: Tarim Basin and large parts of Mongolia added to map.
Nomadic government available for steppe cultures. These function in a radically different way from sedentary societies - you manage populations instead of holdings, and armies are raised based on population size. Also, the ruler’s power must be balanced against the interests of the various Clans within the realm (Clans are not normal vassals, but rather distinct families and factions within the nomad group).
Over a hundred new events add extra color and flair to the Steppes and Central Asia.
Non-nomadic rulers will have special options for combating nomads, such as constructing forts in wild enemy lands.
The Silk Road, with corresponding dynamic trade mechanics and conflicts.
New nomad mercenaries. Send your unruly sons or brothers away as soldiers of fortune.
Landless raiding adventurers may appear and harass a region for a time or try to conquer land and settle.
Shattered and Random Worlds: Start your game on a fictional map of Europe as a small realm fighting for space, or on a random map with historical analogues for the great kingdoms of yore.
Warrior Lodges: Join a Pagan warrior lodge and raid your way up the ranks, unlocking access to powerful allies and greater military skill.
Legendary Bloodlines: Descendants of great warrior heroes will have bonuses that match the accomplishments of their forefathers, including historical bloodlines of Charlemagne, Genghis Khan and others..
Sway or Antagonize Your Neighbors: Try to win a reluctant vassal through charm and persuasion, or provoke someone you want to push into conflict.
Sainthood: Pious Catholics can become canonized, passing on their glory to their descendants and making their resting place a site of great value.
Coronations: Feudal kings and emperors must find clergy to crown them, since all power descends from the heavens.
New Crusade Events: Deeper gameplay for the religious wars of the era.
New Succession Laws: A Pagan Elder Council may have the final word in how a realm is divided among heirs, or a ruler may challenge his brother to combat to unify a realm.
And much more: Changes to religion, custom names for people or objects, deeper baptismal mechanics, lists of people you’ve killed, and other small changes for flavor and variety.