---
title: Shared worlds and collaborative writing
description: Invite editors or viewers, write books and chapters together, collaborate on boards, and preview or restore checkpoints while preserving later history.
type: changelog
date: 2026-11-01
sidebar:
  order: -30
changelog:
  category: Features
---

Invite people to a world as editors or viewers. Invitation links lead through sign-in to an explicit acceptance step, and accepted worlds appear in the recipient's world list. Owners can change roles or remove access.

Organize writing into books with a synopsis, outline, and ordered chapters. Connected editors can write in the same chapter or work on the same board. Presence shows who is in the world and where they are working; private assistant conversations remain separate.

Chapters and boards support automatic and named checkpoints. Preview a checkpoint before restoring it. Restoring preserves later history and coordinates with open editors so stale changes cannot silently replace the restored version.

<img src="/changelog/2026-11-01-collaborative-writing/manuscript.png" alt="The City Between Editions open in the chapter editor, with its chapter list and the beginning of Mara's investigation." width="1280" height="720" loading="lazy" />

The screenshot shows the current editor with the fictional Unfinished Atlas demo.

Read about [sharing](/sharing), [books](/books), [chapters](/chapters), and [revision history](/history).