Story bible, series bible, show bible, world bible — if the terms feel interchangeable, that is because they mostly are. They all describe the same underlying thing: an authoritative reference for a fictional world. But each term carries an emphasis worth knowing, because the emphasis tells you what the document is primarily for and who it is written for.
The confusion is worth clearing up for a practical reason. If a TV producer asks for a "series bible" and you hand them a novelist's sprawling world bible, you have answered a different question than the one they asked — they wanted a pitch and a continuity reference, and you gave them five hundred pages of geography. The terms are not synonyms so much as the same object photographed from different angles, and knowing which angle a person means saves you from building the wrong document.
Here is the plain-language difference between each term, who uses it, what it emphasizes — and why it ultimately matters less than the job all of them share.
World bible
A world bible emphasizes the setting — its rules, history, geography, cultures, languages, and systems. The term is most common in fantasy, science fiction, and game development, where the world itself is a major draw and its internal logic has to hold across a lot of surface area. The characters move through the world, but the world is the thing being built.
The risk that comes with the world-bible emphasis is over-building the setting and under-building the story: a thousand years of meticulous history and no clear sense of whose story this is or what is at stake right now. A good world bible still answers the story questions; it just refuses to let the setting drift, because in these genres an incoherent world is a fatal flaw a reader will not forgive.
If your project lives or dies on whether the world feels coherent and rule-bound — whether the magic, the technology, and the politics hold together under scrutiny — you are building a world bible, whatever you end up calling it.
Series bible & show bible
Series bible and show bible are essentially the same document, used most in television. A show bible is the reference for a series' characters, ongoing arcs, tone, and canon — and it does double duty as a pitch and an onboarding document. It is what a network reads to greenlight a season and what a new staff writer reads on day one to write an episode that does not break the show.
That double duty shapes the document. Because it pitches, a show bible leads with voice and hook — the logline, the tone, the engine of the series, why it runs for five seasons rather than five episodes. Because it onboards, it has to encode the continuity a parallel writers' room will otherwise shred: who knows what, which arcs are load-bearing, which rules of the show's world are inviolable.
The emphasis here is on characters, voice, and continuity across episodes, because TV is written by a room in parallel and the bible is the shared truth that keeps the parallel writers aligned. A show bible that is only a pitch goes stale the moment the room starts breaking story; a useful one is kept live for the life of the series.
Story bible
Story bible is the broadest, most medium-neutral term, common among novelists and across formats. It covers the whole story — characters, world, timeline, plot threads, and canon — without privileging setting or series structure. When in doubt, "story bible" is the safe word for the general thing, which is exactly why we use it as the default term across this blog.
Because it does not privilege any one section, the story bible is the most honest description of what the document actually is: not a setting catalog and not a pitch deck, but the complete record of what is true in your story. A novelist building a trilogy, a narrative designer documenting a game world, and a showrunner prepping a room are all building a story bible; they just lean on different sections of it.
And the neighboring terms
A few adjacent terms get folded into the same conversation. A campaign bible or setting guide is the tabletop-RPG cousin — a shared reference a game master and players build a long-running campaign against, with the same continuity stakes as any serialized world. A franchise or IP bible scales the idea up to a property spanning films, games, novels, and comics, where the bible is what keeps a dozen separate teams from contradicting one another across media.
A pitch bible is the one genuinely different animal: it is built to sell, not to maintain, and it is allowed to be incomplete and beautiful in ways a working bible cannot afford. The trap is mistaking a pitch bible for a working one and trying to write a season against a document that was only ever meant to win a meeting.
Which term should you use?
Pick the term your collaborators and your medium already use, because the word sets their expectations about what they will find inside. Pitching a show? Call it a series or show bible and lead with voice. Documenting a sprawling secondary world for a fantasy series or a game? Call it a world bible and make the setting airtight. Working solo across formats, or just want the least ambiguous word? Call it a story bible.
What you should not do is let the label decide which facts you keep. The emphasis is a matter of weighting, not exclusion — a world bible still needs characters and arcs; a show bible still needs the world's rules to hold. Choosing a term tells people what to expect; it does not give you permission to skip a section that will break your canon later.
Frequently asked questions
- What's the difference between a story bible and a series bible?
- A series bible (or show bible) is a TV-specific reference emphasizing characters, arcs, and continuity across episodes, and often doubles as a pitch. "Story bible" is the broader, medium-neutral term for the same kind of document.
- Is a world bible the same as a story bible?
- Nearly. A world bible emphasizes setting, rules, and history — common in fantasy, science fiction, and games — while a story bible covers the whole story without privileging the setting.
- What is a show bible?
- A show bible is a television series' reference for its characters, ongoing arcs, tone, and canon. It is used both to pitch the series and to onboard staff writers so episodes don't break continuity.
CanonBoard scans your whole world and tells you where it disagrees with itself.
Start free