What is CK3 Storyline Editor?

A free browser tool for Crusader Kings III modding. You design event chains, decisions, traits, and related story content on a visual graph, then export an installable CK3 mod. You do not write Paradox script.

Do I need to know Paradox script to make a CK3 mod?

No. CK3 Storyline Editor is for people who want Crusader Kings 3 events and story mods without learning Paradox script. Advanced users can still paste raw script where the forms do not cover a case.

Is this for Crusader Kings 2 or Crusader Kings 3?

Crusader Kings III (CK3) only. It is not a CK2 editor and it is not a save-game editor.

How do I install a mod exported from the editor?

Unzip the download. Put the .mod file and the matching folder side by side in Documents/Paradox Interactive/Crusader Kings III/mod. In the CK3 launcher open Mods, enable your mod, press Play, and start a new game.

Is CK3 Storyline Editor free?

Yes. It runs in the browser with no account. Optional support is a tip jar, not a paywall.

Is this an official Paradox Interactive tool?

No. It is an independent fan tool. Crusader Kings III is a trademark of Paradox Interactive.

Free Crusader Kings 3 modding tool for events and story mods

CK3 Storyline Editor is a visual CK3 event editor. Design branching event chains, decisions, traits, and other story content in the browser, then export an installable Crusader Kings III mod. No Paradox script required.

Start making a CK3 mod

Runs in your browser. Free. No account. Windows, macOS, and Linux.

Who this is for

People who want to add story to Crusader Kings III without learning the game’s scripting language. Use it to make CK3 events, a decision, a custom trait, or a story mod without Notepad and Paradox script.

It is not a CK2 editor, not a save editor, and not an official Paradox Interactive product.

What you can make

CK3 event chains on a graph, with choices that lead to what happens next
Decisions and character interactions as ways to start the story
Custom traits, timed modifiers, nicknames, and secrets
Story characters, court positions, and men-at-arms regiments
Artifacts (Royal Court) and landless map contracts (Roads to Power)
A ZIP you drop into the Crusader Kings III mods folder

How to make a CK3 story mod

Open the CK3 Storyline Editor.
Add events, write the text and choices, and drag links for the next event. Mark one event as story start so it can fire in-game.
Click Export. Unzip the file, put the .mod file and folder into Documents/Paradox Interactive/Crusader Kings III/mod, enable the mod in the launcher, and start a new game.

Why not write Paradox script by hand?

CK3 modding normally means editing .txt files for events, localization, on-actions, and descriptors. The editor keeps that pipeline but gives you a graph, forms, validation, and a live preview. You still get a normal CK3 mod the launcher understands.

FAQ

What is CK3 Storyline Editor?: A free visual CK3 modding tool. You design Crusader Kings III events and related story content in the browser, then export a playable mod.
Do I need Paradox script?: No. The common cases are forms and a graph. Raw script is an optional escape hatch.
Is this for CK2 or CK3?: Crusader Kings III only.
How do I install the exported mod?: Put the .mod file and matching folder side by side in your CK3 mods folder, enable it in the launcher, and start a new game.
Is it free?: Yes. Optional tips are welcome; they are not required to export.
Is this official?: No. Independent fan tool. Crusader Kings III is a trademark of Paradox Interactive.