Crusader Kings III is a grand strategy role-playing video game set in the Middle Ages, developed by Paradox Development Studio and published by Paradox Interactive as a sequel to Crusader Kings (2004) and Crusader Kings II (2012). The game was released on PC on 1 September 2020 and on the Xbox Series X/S and PlayStation 5 on 29 March 2022.

Gameplay

Like its predecessors Crusader Kings and Crusader Kings II, Crusader Kings III is a grand strategy game and dynasty simulator set in the Middle Ages. Players begin as a character in either 867 or 1066. Upon the death or deposition of a player's character they continue to play as that character's heir. Overall, players develop a dynasty over the centuries, with the game ending in 1453.

Crusader Kings III

Dynasties can form cadet branches that have their own heads and act mostly independently from their parent dynasty. The heads of dynasties are able to use a new resource known as Renown to assert their control over their house. For example, the heads of houses are responsible for legitimizing bastards.

Crusader Kings III

Characters have full-body, 3D-rendered character models instead of 2D portraits. These character models can be customized with clothes and headwear by clicking the Barbershop button in the character menu. As in Crusader Kings II, they have traits that affect their stats and behavior. Making choices that go against a character's traits will increase that character's stress. The game's genetics system allows characters to pass on some of their characteristics to their descendants. Characters are able to frighten their vassals into staying loyal by increasing their Dread, which increases when the character performs malevolent actions, such as executing or torturing other characters. Characters are able to select one of five lifestyles to follow. Each lifestyle has three skill trees that allow characters to enhance skills related to that lifestyle.

Crusader Kings III

Players' realms may have the feudal, tribal, or clan government types. Religion and culture are both aspects of the game. Leaders can advance their goals by warfare, diplomacy, or subterfuge. Players may undergo pilgrimages and wage holy wars, and entire religions can be called to arms in crusades or jihads. Religions have Tenets, which are bonuses given to all practitioners of that faith, and Doctrines, which deal with the religion's stances towards issues like homosexuality and female clergy. The principal resource for interacting with religion mechanics is Piety, and a player with sufficient piety may choose to develop their own heresy, with the Tenets and Doctrines being chosen by the player.

Levies are represented primarily by low-quality infantry composed of peasants. Characters will need to hire men-at-arms in order to field higher-quality soldiers, such as crossbowmen and cavalry. Characters can make other characters from their court or realm with significant combat skills into powerful knights.

The game map is about four times more detailed than the one in Crusader Kings II and slightly larger, incorporating Europe, Africa roughly as far south as the equator, and Asia as far East as Tibet.

Development

Game director Henrik Fåhraeus commented that development of the game commenced "about 1 year before Imperator", indicating a starting time of 2015. Describing the game engine of Crusader Kings II as cobbled and "held together with tape", he explained that the new game features an updated engine (i.e. Clausewitz Engine and Jomini toolset) with more power to run new features.

As is the case with many of Paradox's unreleased and currently supported works, the developers publish a weekly developer diary. Each post focuses on a single aspect of the game, such as government types, user interface, governments, war, etc., how this aspect of the game will be handled in Crusader Kings III, and how it is different from Crusader Kings II. A monthly update video is also published on the Paradox Interactive YouTube channel, summarizing all of the changes which have been made in that month's developer diaries.

Downloadable content

Mods

Crusader Kings III is also known for its large number of third-party mods available on the Steam Workshop. These mods can add new game mechanics as well as make graphical improvements. Some popular mods include the total conversion mod A Game of Thrones, which is set in the world of A Song of Ice and Fire, and The Fallen Eagle, which changes the game's timeline to around the fall of the Roman Empire.