Exordium

Build the world, draw the map, cast the characters, chart the history, and write the story — all in one place. For writers, designers, and game masters.

Worldbuilding Maps Characters History Writing one story
Worldbuilding

Build worlds from the ground up

A 14-step guided wizard takes you from a blank slate to a living world — races, religions, magic, politics, economy, and cosmology — before you write a single word.

  • 14 guided steps spanning calendar & cosmology, races, religions & pantheons, full magic systems, cultures & languages, economy & trade, law, organizations, knowledge, and threats.
  • Mix templates to blend two religions, races, currencies, or cultures into something wholly your own.
  • A completeness radar shows at a glance which corners of your world still need depth.
  • It all flows into the map — settlements inherit demographics, faith, language, and law automatically.
Cartography

A map that thinks like a world

Procedurally generate a fantasy world or load real Earth geography, then paint borders, provinces, and settlements — with full historical snapshots.

  • Generate fantasy continents (paint your own landmasses first) or start from real-world Earth data.
  • Political entities with succession, militaries, economies, and trade routes — each deriving its culture, religion, and language from its people.
  • Settlements with per-race demographic pie charts, industries, markets, crime, and legal profiles.
  • Capture historical snapshots ("Fall of the Old Empire") and watch borders and powers shift across eras.
  • Export your map to PNG up to 16K (16384px) — print-ready.
Characters

Characters who feel like people

A 7-step character wizard builds psychologically grounded people from the inside out — and AI can populate an entire cast from a single sentence.

  • Core wound, the lie they believe, desire vs. need, public mask vs. private self — depth, not stat blocks.
  • 150+ named archetypes across 14 categories, applied as overlays onto existing characters.
  • Generate a whole ensemble from a description — including AI-assigned relationships between every pair.
  • An interactive force-directed relationship map, color-coded by bond, with snapshots across your story.
Story structure

History in motion

Build multiple story timelines from 42 structural templates, then keep your outline beside every scene as you write.

  • 42 templates — Hero's Journey, Save the Cat, Kishōtenketsu, Corruption Arc, Political Intrigue, and more — or start blank on a free-form beat canvas.
  • AI generates beats in phases: concepts, per-beat detail, then assigns your characters to each beat.
  • A side panel in the editor shows each scene's beat: a story-function radar, promise/payoff threads, and adjacent beats.
  • Per-scene beat-progress tracking keeps your scenes ordered within the structure.
The editor

Write inside your world

A rich-text editor that recognizes every character, place, and deity from your world as you type — with local-AI autocomplete and a prose-analysis radar.

  • Entity-aware highlighting: characters, settlements, factions, and deities underlined by role — click a name to open their profile.
  • Inline ghost-text autocomplete from your own local model — Tab to accept, Esc to dismiss.
  • The Textual Harmony radar scores your prose on six stylometric axes and pinpoints the passages to fix.
  • Hundreds of craft snippets, a dictionary/thesaurus, conlang translation, and exports to PDF, DOCX, Markdown, and TXT.
  • Compile a full World Bible PDF — every section, map plate, and character — in one click.
Local AI

Private AI, fully offline

Every AI feature runs through Ollama on your own machine. No subscription, no API keys, no data ever leaves your computer.

Any local modelPick a different model per task — a big one for world bibles, a fast one for autocomplete.
Runs in the backgroundGeneration keeps going as you work; a global indicator jumps you back to exactly where it started.
On-theme by designContext-scoped prompts keep every suggestion grounded in your world's own lore.
Your project

One file. Everything.

Your entire world — maps, characters, timelines, and manuscript — lives in a single .exordium file, with autosave and undo across every section.

One portable projectA single .exordium archive holds your map, worldbuilding, cast, timelines, and full manuscript.
Never lose workPer-section undo/redo and autosave keep your history clean and safe.
Find anythingSearch every entity in your world — people, places, factions — from anywhere in the app.

One license. Yours to keep.

A one-time purchase — no subscription. Includes every update for this version of Exordium.

$79 USD · one-time

Perpetual licence for Exordium 1

  • The complete studio — maps, worldbuilding, characters, timelines & writing
  • Private local AI — no subscription, runs on your own machine
  • Every update for this major version, free
  • 7-day free trial — try before you buy
  • Your licence key, emailed instantly after checkout
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