This article has been verified for the current version (1.3) of the game.
Downloadable content (DLC) is content built by Paradox Development Studio (PDS) as an extension or add-on to Crusader Kings III. 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.
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.
Best known as fierce raiders from a land of snow and legend, the Norse were a complex society where loyalty was based on more than a noble bloodline. Leaders had to prove themselves as warriors, yes, but also as judges and governors.
Northern Lords offer new events and cultural themes related to Norse society:
Norse Adventurer Realms: Norse characters may abandon their own homes and lead hosts into foreign lands to establish their own kingdoms.
Jomsvikings and Shieldmaidens: Norse holy warriors and stalwart shieldmaidens take up arms on your behalf, while poet characters can compose stinging rebukes or romantic overtures.
New Cultural Content: Special Norse dynastic legacies, Norse blot sacrifices, trials by combat and cultural innovations, as well as numerous new events for additional color.
New Art and Music: Original art and musical score to enhance your playing experience.
And more: Berserkers, missionaries, runestones, Varangian adventurers, new decisions and other highlights from the exciting history of the Norse people.