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Mount & Blade II: BannerlordEventsWar Sails Modding Kit Release & Patch WS v1.2.8 / BL v1.4.8
Community

War Sails Modding Kit Release & Patch WS v1.2.8 / BL v1.4.8

Mount & Blade II: Bannerlord · published 10 Aug 2026, 12:09 UTC

All eventsPlayers around this dateRead on Steam

Greetings Warriors of Calradia,

The War Sails Modding Kit is now available! A big thank you to all the modders who tested the Kit during the Closed Beta. Your feedback and early creations directly shaped the Kit we're releasing today.

With this Kit, modders can:

  • Build their own naval world maps, and edit the War Sails map, including the wind/current flowmaps.

  • Create entirely new ships from the ground up, and edit existing ones.

  • Build upon the Nord armour sets to create new variants.

  • Use the new Nord architectural assets (walls, gates, houses, etc.) to design brand new settlements.

  • Create new Seaborne Village Raid scenes.

We are also releasing three new modding documentation pages to detail the new systems:

  • War Sails World Map

  • Ship Creation

  • Seaborne Village Raids

How to Access the Kit

You can download the Kit via Steam: Open Steam → go to Library → right-click “Mount & Blade II: Bannerlord” → Properties… → DLC → Install “Mount & Blade II: Bannerlord - War Sails Modding Kit”.

You can then open it via Steam: Open Steam → go to Library → launch “Mount & Blade II: Bannerlord - Modding Kit” → enable “War Sails” on the launcher’s “Mods” list → press “Play” → press “Editor” in the “Main Menu”.

Modding Kit Usage, Mod Creation & Distribution

The Modding Kit usage and mod creation fall under the Bannerlord Modding Tools - EULA. To learn more about the EULA and how to upload a mod to Steam Workshop, visit the War Sails Modding Kit & Mod Creation forum thread.

Thank you again to all the Closed Beta participants: [TAOM] Thyrell, Anate, Arcaddon, Awallacer, BlackRose, Byako, CaptainFRACAS, conleyc86, Cozur, Dedmond, Detals, Eogan, Fatrod, g-spurs, Ha_rang, Hart, HyperCharge, jabdimelborn, John_M, KAMBY, Le Profyteur, Lemmy1916, Litauen, NiceGuardian, Path, Shieldly, Sly, Snorri, toy boat, Vampy, Z3rca, Zodiac, zzensan.


Please note that there may be a delay between the download of the base game and the download of War Sails. If you launch the game prior to both of them being updated, you will crash. If you face this issue, please verify your game files.

War Sails v1.2.8

The following changes are specific to the War Sails expansion and are not part of the base game.

Changes

  • Fixed a crash that occurred if the deceased notable had a caravan at sea at the moment of death.

  • Fixed a crash that occurred during the War Sails storyline when trying to initiate a conversation with Gunnar while the owner of Ostican is hostile.

Bannerlord v1.4.8

The following changes are part of the base game and apply to the War Sails expansion as well.

Changes

  • Added detection checks and warnings which appear in case the player has corrupted game files.

  • Added a fallback system to shader compilation to handle cases of corrupted local shaders. The system should recognize a corrupted shader cache and remove it without causing a crash.

Fixes

  • Fixed a bug that caused horse rein visual bug when a mounted agent died.

  • Fixed a bug that caused jittering on ragdolls.

  • Fixed a bug that caused drag-and-drop to use incorrect position with different UI scales and resolutions.

  • [MP] Fixed a bug that caused decals being removed in Multiplayer mission reset. Only newly added blood decals will be removed.

Modding

  • Locally created shader cache is now deleted automatically after a module list change, to prevent shader cache-related crashes.

  • The mod publish system now compiles terrain shaders as well, reducing loading times for scenes in mods.

  • Added a system that lets modders override the water material on a per-scene basis for non-naval scenes.

    • Added a new modding documentation page to cover this system - Custom Water Materials for Non-Naval Scenes.

  • Significantly improved the Settlement Distance Cache computation performance, reducing the overall time needed to generate it by half.

  • Fixed a bug that caused Settlement Distance Cache computation to fail silently on modded world maps. Errors are now properly reported to the user.

  • Fixed a crash that occurred while saving a metamesh from modding tools.

  • Fixed a bug that caused the world map water to render as black in the editor.

More from Mount & Blade II: Bannerlord

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Game update19 Aug 2026Beta Patch Notes - WS v1.3.0 / BL v1.5.0Greetings Warriors of Calradia, Our last content patch focused on the sandbox simulation. It made diplomacy more responsive and encouraged our lords to pursue meaningful wars, create larger armies, go to sea, harass convoys and raid villages. It also included the new seaborne raid, additional ships and equipment as well as many tweaks to gameplay, visuals and performance. Today’s beta release p…Community14 Aug 2026War Sails Modding CompetitionGreetings Warriors of Calradia! Today, we’re raising our sails to celebrate the creativity and dedication of our modding community. We're thrilled to announce the War Sails Modding Competition, running from 14 August to 22 November, with more than €30,000 in prizes up for grabs! War Sails Modding Competition In collaboration with Nexus Mods and ModDB, the competition features three contests, ea…Game update8 Jul 2026Patch Notes - WS v1.2.7 / BL v1.4.7Please note that there may be a delay between the download of the base game and the download of War Sails. If you launch the game prior to both of them being updated, you will crash. If you face this issue, please verify your game files. The patch is now live on all platforms, including consoles. Please note that console updates may take a few hours to appear due to each platform’s release proc…