Answer questions and watch your answers become wiki pages, maps, family trees and timelines — then print it all as a book. Errator runs on your computer, never online.
Free forever. Windows 10/11 · no account · no internet needed
Maps that move, a wiki that writes itself from your answers, family trees without rules, and a book at the end.
Drop a star system and watch it turn. Planets follow real orbits, ships fly their routes, gravity bends the grid — and time is yours to speed up or pause.
Every page you write finds its place on a living map of links. See at a glance what connects to what — and what is still waiting to be written.
Generate a continent in a click, then paint it: forests, mountains, rivers, roads, cities, ruins. Every symbol can open the page it belongs to.
Answer questions and the answers land in the right pages. Type [[ to link anything; pages you mention but haven't written yet are waiting for you.
A freeform canvas, like a whiteboard: drag an arrow from a card and a new tie is born. Secret lovers, forbidden marriages, more than two parents, time loops — nothing is off-limits, and Errator understands every tie it draws.
Turn your world into a printable book that reads like a person wrote it — with a cover, chapters and an index. Or save any map, tree or timeline as PNG and PDF.
Press Ctrl K and jump to any page, map or command. Every studio has its shortcuts, and ? always shows them.
Ages flow from left to right; events hang beneath them. Invent your own calendar — months, seasons, weekdays — and date everything in it.
Errator was made by Maximian11, who holds all rights to it. It is free for anyone to use — and it will stay that way.
The texts you write in Errator belong to you. Publish them, sell them, build a book or a game on them — commercially, too.
Maps, family trees, mind maps and other visuals made in the app are for personal use. They may not be sold.
Errator is free, so it can never be sold — not by anyone, not in any form, not bundled into a product, not for any price.
© 2026 Maximian11. All rights to Errator belong to Maximian11. Errator is free for everyone to use and may never be sold, rented or bundled into a product for sale. The texts you write are yours, including for commercial use; maps and other visuals made in the app are for personal use only. Privacy: Errator never connects to any server — no accounts, analytics, cookies or trackers. Your worlds stay on your computer.
Windows may warn about an unknown publisher the first time; choose “More info → Run anyway”.
Errator is and will stay free. If it brings you joy and you want to help it grow, you can send USDT to the Tron address below. Every donation buys time for new features.
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