1.18.3|Jan 27, 2026
View on Steam↗Available Now: High Medieval Warfare Attire & Holy Buildings + Update 1.18.3
3/5 Moderate
Crusader Kings III launches the High Medieval Warfare Attire and Holy Buildings Creator Packs alongside Update 1.18.3, which resolves critical crashes and Administrative government bugs.
Key Changes
- 1Released High Medieval Warfare Attire Creator Pack featuring 18 helmet designs and regional armor
- 2Released Holy Buildings Creator Pack with unique models for 7 historical sites and regional mosques/churches
- 3Fixed critical crashes related to portrait DNA generation and the situation window
- 4Updated liberty faction creation triggers and war outcomes for Administrative governments
- 5Fixed Japanese tribal characters incorrectly converting to Administrative realms instead of Feudal
- 6Resolved building unlock issues for Farm Estates (Pastoralists) and Watermills (City Keepers)
- 7Corrected Minister council removal logic when using the Withdraw from Governorship decision
- 8Fixed missing treasury payouts and bankruptcy issues related to Great Projects and Censuses
- 9Corrected requirements for the Found the Empire of Brunei decision
- 10Fixed Grand Campaign completion logic after final war victories
All Changes
⚔️Creator Pack: Warfare Attire(14)
- newEnglish Knights Surcoat: Added English Knights Surcoat with Standard, Late English, and Late French variants
- newFrench Gambeson Armor: Added French Gambeson Armor designed for commoners
- newGerman Coat of Plate: Added German Coat of Plate armor
- newFrench Kettle Helmets: Added 3 French Kettle Helmets, each with or without chainmail variants
- newCommoner Cervelliere: Added 1 Commoner Cervelliere helmet, with or without chainmail variants
- newEarly French Great Helms: Added 2 Early French Great Helms
- newLate French Great Helm: Added 1 Late French Great Helm
- newEarly English Great Helms: Added 3 Early English Great Helms
- newLate English Great Helm: Added 1 Late English Great Helm
- newEarly German Great Helm: Added 1 Early German Great Helm
- newLate German Great Helms: Added 2 Late German Great Helms
- newLate Swabian Great Helms: Added 2 Late Swabian Great Helms
- newBanded Chainmail: Added 1 Banded Chainmail coif
- newBishop Helmet Crest: Added 1 Bishop Helmet Crest for warrior Bishops with the Unrelenting trait
⛪Creator Pack: Holy Buildings(12)
- newMosques: Added new designs for African, Indian, Persian, Southeast Asian, and Turkish mosques
- newOrthodox Churches: Added new designs for Caucasian and Eastern Slavic Orthodox Christian churches
- newItalian Catholic Churches: Added new design for Italian Catholic churches
- newTibetan Stupas: Added new design for Tibetan stupas
- newCatholic Grand Cathedrals: Added new 3D model for Catholic Grand Cathedrals
- newUniversity of Sankore: Added unique model for The University of Sankore in Timbuktu
- newSt Peter’s Basilica: Added unique model for St Peter’s Basilica in Rome
- newMont-Saint-Michel: Added unique model for Mont-Saint-Michel in Normandy
- newGrand Mosque of Yazd: Added unique model for Grand Mosque of Yazd in Central Iran
- newQutb Minar: Added unique model for Qutb Minar in Delhi
- newSanchi Stupa: Added unique model for Sanchi Stupa in Madhya Pradesh
- newBoudhanath Stupa: Added unique model for Boudhanath Stupa in Kathmandu
👑Governments & Factions(4)
- fixAdministrative Government: Updated the liberty faction creation trigger for all administrative governments
- fixLiberty Faction: Fixed liberty faction war to ensure it always reduces the appropriate law
- fixJapanese Culture: Fixed bug where independent tribal Japanese characters converting to feudalism would incorrectly become an Administrative realm
- fixMinisters: Updated the Withdraw from Governorship decision for Ministers to correctly remove them from the Council
🏗️Buildings & Traditions(4)
- buffFarm Estates: Fixed requirements for Farm Estates to allow construction of levels 1 through 4 for cultures with the Pastoralists tradition
- buffWatermills: Fixed watermills not unlocking correctly in city holdings for cultures with the City Keepers tradition
- fixGreat Projects: Fixed missing treasury payouts for Fertility Effort and Natural Disaster Insurance from the Conduct Census Great Project
- buffMinisters: Prevented Ministers from becoming bankrupt from Great Project optional contribution payouts
🛠️Stability & Bug Fixes(6)
- fixStability: Fixed a crash related to generating portrait DNA
- fixStability: Fixed a crash related to invalid situations in the situation-window
- fixEmpire of Brunei: Fixed incorrectly displayed requirements for the Found the Empire of Brunei decision
- fixChinese Nobility: Chinese nobility will no longer use Western trousers
- fixChariots: Chariots are no longer always stuck in the mud
- fixGrand Campaign: Ensured that the Grand Campaign will complete after a Grand Campaign war is won and there is no title left to conquer
Summary
This update introduces two community-created DLC packs and a significant maintenance patch. The High Medieval Warfare Attire pack adds historically inspired armor and 18 helmet designs for Western European cultures, while the Holy Buildings pack provides unique 3D models for regional houses of worship and seven iconic historical sites like St Peter’s Basilica.
Update 1.18.3 Highlights
Update 1.18.3 focuses on stability and logic fixes for the Administrative government system. Key fixes include resolving crashes related to portrait DNA and the situation window, correcting liberty faction triggers, and ensuring proper building unlocks for cultures with specific traditions like Pastoralists and City Keepers.