World Notes: The Simple System That Keeps Your Fiction Universe Alive
Continuity errors will kill your shared world before it grows. Learn how to use World Notes, a simple folder system that keeps your fantasy or sci-fi universe consistent across every story you write.
Every writer who builds a world across multiple stories eventually hits the same wall. A city you described as three days’ ride from the capital is suddenly a half-day journey in your new story. A character references a war that, according to your first book, hasn’t happened yet. A technology your hero invented in book two somehow exists in book one.
These aren’t signs of a bad writer. They’re signs of a growing world, and a world that’s growing needs a system. That system is World Notes.
What Are World Notes?
World Notes are a living collection of documents where you record everything about your world that exists outside any single story. Not plot notes. Not character arcs. The world itself: its places, people, history, rules, and the details that didn’t make the final cut but still exist somewhere in the fabric of your fiction.
The concept is simple. Create a folder called World Notes. Inside it, create individual documents for each category of your world. A Planet Guide. A Character Index. A Cities and Towns file. A Magic or Technology Rules doc. You don’t need all of these on day one. You build them as your world demands them.
Start While You Write Your First Story
You don’t need a finished world to start World Notes. In fact, the best time to start is during your first draft, while the details are fresh and the world is still surprising you.
As you write, you’ll invent things almost by accident. A throwaway line about a moon with two suns. A guild name you made up to sound convincing. A slang term a character uses without explanation. These details feel minor in the moment, but they’re the texture that makes a world feel real. Write them down.
In my current sci-fi book, I keep a document called Planet Guide. Every time a character mentions or visits a planet, I log it: its name, its location, what it’s known for, who lives there. Most of these planets never appear on the page for more than a paragraph. But they’re real to me, and that reality bleeds through in the writing.
Paste What You Cut
Here’s one of the most useful habits you can build: when you cut or shorten a passage during editing, don’t just delete it. If it added something to the world, paste it into your World Notes.
This happens more than you’d think. You write two paragraphs about the founding of a city, then realize the pacing needs them gone. The story is better without them, but the information is still true. Save it. Paste it into your Cities and Towns doc with a quick note about which draft it came from.
That cut passage might become the seed of a future story. It might save you from contradicting yourself three books later. Or it might just sit there quietly, making you feel more confident that the city has a real history even if no reader ever sees it.
Let Your World Notes Inspire New Stories
World Notes aren’t just a reference tool. They’re a creative one.
When you write down a city because a character passes through it, you’re not just logging a detail. You’re acknowledging that this place exists, that people live there, that things happen there that have nothing to do with your current plot. Over time, your World Notes will fill up with places and people that have never had their own story.
That’s your next story.
For cities and towns especially, I find the most powerful approach is to write a short story set there. Not a summary, not a history, but an actual narrative with characters and a conflict rooted in that specific place. It deepens the location in ways that bullet points never can, and it gives you something publishable as part of your shared world. A reader who encounters that city later in a novel will feel the weight of it without knowing why.
Keep It Consistent, Not Exhaustive
The goal of World Notes is not to build an encyclopedia. It’s to stay consistent.
You don’t need to document every street in every city or map every star system. You need to record the details you’ve already committed to, so you don’t contradict them later. A character’s eye color. The name of a king who died before your story began. How long it takes to travel between two key locations.
These are the details that pull readers out of a story when they’re wrong. They’re small, easy to forget, and exactly what World Notes are for.
A useful rule: if you’ve written it in a story, log it. If you’ve invented it while writing and then cut it, log it. Everything else can wait until it becomes relevant.
Your World Notes Are Never Done
The best thing about World Notes is that they grow with you. Every story you write adds to them. Every detail you invent, every place you visit, every character who exists just beyond the edge of the page, all of it goes in.
Over time, you won’t just have a folder of documents. You’ll have proof that your world is real, at least to you. And that confidence, that sense that your world existed before page one and will continue after the last, is exactly what readers feel when they fall in love with a universe and never want to leave.
This is actually what I was thinking about starting for my Norse inspired space opera universe on the way home today! This is a great idea. Thank you so much for this article!!