book written from your idea or notes

A writing desk photographed from above: a manuscript stack, a page marked up in orange, an open printed book, a finished paperback and a phone playing an audiobook, laid out left to right along the desk

Built for Fantasy Authors

Build the world once, write the saga in your voice

Your magic system, your map and your cast stay consistent from book one to the last book in the series, and every chapter is written to a sample of your own prose.

  • 4.7
  • 536 reviews
  • 20,000+ authors
  • Free to start, no credit card
  • World details that stay consistent
  • Series continuity across books
  • Your voice, not generic fantasy

book written from your idea or notes

  • 20,000+Authors writing with AIWriteBook
  • 27,000+Books created on AIWriteBook
  • 30+Languages to write and translate in
  • 4.7/5Average author rating

Why Fantasy Breaks AI Tools

Fantasy asks more of continuity than any other genre.

The magic stops making sense

Rules you set in chapter two are broken by chapter twenty.

The world forgets itself

Places, histories and factions drift as the book grows.

Generic epic prose

Chosen ones, ancient evils and purple description, in a voice that is not yours.

Series are harder still

Book three should remember book one, and most tools start from nothing.

Watch a Fantasy Novel Take Shape

See a world carried into every chapter and written in the author's voice.

From World to Finished Saga

Build, write, edit, format and publish, with your world carried into every chapter.

1.Write

Build the world, then write

Put your magic system, places and history into the book details and character profiles, or sketch them first in the free world builder. Plan each chapter's events and locations, and write chapter by chapter in your own style.

  • Paste 6 to 10 paragraphs of your own writing and every chapter follows that style
  • Import a Word .docx of up to 200,000 words without a line of it rewritten
  • An outline, characters and chapters you can reorder, edit or rewrite
  • Choose the model for each chapter: Gemini, Claude or Grok
  • Standing instructions for the book, extra instructions for any chapter

2.Edit

Edit without losing yourself

Editing keeps your voice and leaves every decision to you. Ask for a change and see it as a diff, or open the Book Editor step for a genre scorecard, an editorial letter and line edits that go straight into your chapters.

  • Chapter chat shows every change as a diff you accept or reject
  • Book Editor: a genre scorecard, an editorial letter and line edits with proofreading built in
  • Every suggested replacement is accepted or rejected one by one
  • AI proofreader with several fixes to choose from for each issue
  • Edit any line yourself in the editor, whenever you like

3.Format

Format it like a real book

Pick an interior theme, a body font and a trim size in the book formatter, and export a print PDF, an EPUB and a DOCX that look professionally set. Design the cover in the same place.

  • Five interior themes and 12 embedded body fonts
  • Nine trim sizes, with front and back matter built in
  • Print PDF, EPUB and DOCX, with EPUB validation
  • A cover at the 1840 x 2784 KDP ratio, or upload your own
  • An audiobook made from the same manuscript

4.Distribute

Distribute it under your name

Take the files to Amazon KDP or any other store. The KDP extension fills the Details, Content and Pricing pages while you review each one. Share one Author Page link and collect the emails of readers who want your next book.

NanoReads
Distribute on NanoReads

Our reader website + iOS/Android apps

140,000+
registered readers
on NanoReads

Readers who browse your genre on NanoReads can find your book there.

Written by Real Authors with AIWriteBook

Browse books created by authors just like you

Built for Fantasy

Tools for worlds that have to hold together.

World details in every chapter

Your book details, characters and outline travel with each chapter, so the rules stay the rules.

A story bible per chapter

Events, locations, twists and character interactions planned for every chapter.

Series of up to five books

Earlier books feed the next one with their characters, details and compressed outline.

Your prose, not stock fantasy

Every chapter is written to a sample of your writing.

Multiple points of view

Plan which characters carry each chapter and how they interact.

Covers with your characters

Place up to three of your characters on a cover at the KDP ratio.

Try it on your own book

Plan, write and edit your first chapter free.

No credit card needed

Writing Fantasy Before and After AIWriteBook

What changes when the world is carried into every chapter.

The Old Way

  • Magic rules broken halfway through
  • Places and factions that drift
  • Stock epic-fantasy prose
  • Book two starting from scratch
  • World notes scattered across documents

With AIWriteBook

  • World details included with every chapter
  • Locations planned per chapter in the story bible
  • Chapters written to your own writing sample
  • Earlier books feeding the next one
  • Your draft and notes imported into one book

Already have a draft?

Import your Word file and keep writing in your own voice.

No credit card needed

What writers say about AIWriteBook

Real reviews left on AppSumo, Trustpilot and the other places our customers use.

4.7536 reviews onAppSumoCapterraTAAFTToolify

Questions From Fantasy Writers

How worldbuilding and series work.

Still have questions?Contact Support

Build Your World. Write Your Saga.

Consistent magic, places and characters across every book, in your own voice. Start free.

  • No credit card required
  • Series continuity
  • You keep 100% ownership