Story Branching: Try a What-If Without Touching Your Manuscript

Every novelist hits the question. What if she refuses the oath? What if the traitor is revealed in Book 2 instead of Book 3? What if the chapter runs from his point of view? You cannot answer it in your head. You have to write the other version and read it.

A story branch is that other version, kept alongside the original rather than on top of it. It starts from a named scene, carries the scenes you rewrite, and leaves the rest of the book alone. When you have read both, you keep one. The term comes from version control in software, where a branch lets a team try a change without disturbing the working copy. For a writer the idea is simpler: the draft you trust stays safe while you try the draft you are curious about.

In games and interactive fiction, “branching narrative” means something else: a story the reader steers by choosing a path. This article is about the novelist’s meaning, an alternate version of your own book that you write, compare and then keep or set aside.

Most writers branch by hand. The usual methods, and where each one breaks:

• Save As. Book2-final-v3-ALT.docx works for one what-if. By the third, nobody can say which file is the book, and every fix to the original has to be copied into the copy.
• A pasted scene at the bottom of the file. Easy to write, easy to forget, and easy to ship by accident in the upload.
• A separate drafts folder. Keeps things tidy until you want the alternative back in. Then you merge by hand, scene by scene, and hope you caught every one.

The common failure is the same in all three. The alternative and the original drift apart with no record of what changed, so choosing between them means rereading both in full.

In a standalone novel, a branch changes one book. In a series, a branch in Book 2 can reach every book after it. A character who now lives has to be somewhere in Book 3. A secret revealed early changes what the reader knows in every later scene that depends on it. That is why the choice should be made on the page, with both versions in front of you, and why the version you keep has to end up in one place: the main text your series canon is built from. A full analysis of the book, and the canon it builds, never read an alternative. Only a check you ask for does.

Story Branches lives in the Story Bible. Each alternative follows the same steps, and the check is optional.

1. Create an alternative. Give it a name, write the question you are exploring (“What if Maren refuses the oath?”), and choose the scene it starts from. Creating it changes nothing in your book and starts nothing. The alternative starts out reading exactly like your main draft, and whatever you rewrite in it becomes one of its changes.
2. Write it yourself. “Write this alternative” opens the same scene editor you use for the book, and the editor stays on that alternative until you choose “Write in the main draft” on the map. Every word in an alternative is yours.
3. See every version on one map. The map shows your main working draft and each alternative as its own lane, with the number of scenes each alternative has changed. An alternative with no changes says so.
4. Compare, one scene at a time. Each changed scene sits beside its saved baseline. Under it, “What this changes” lists two plain facts, counted from the text: whether the scene was added, removed or rewritten, and how many words it gained or lost.
5. Check it, if you want a second read. “Check this alternative” reads each changed scene against your canon and the scenes around it, then lists what the change would break and which later scenes rely on it, with a coherence score for each scene. It costs 3 credits per changed scene, shown before you confirm. It writes no prose, and if it fails, your credits come back.
6. Adopt it, or let it go. “Review adoption” lists every scene the alternative would replace in your main text. You confirm the full count before anything changes. If you change your mind, “Put it back” on the confirmation page restores exactly those scenes, as long as they have not been edited since.

Not ready to write it yet? “Ask a what-if” reads one saved scene against a change you describe, such as “What if Maren refuses the oath?”, and lists what that change would break in your canon and timeline and which later scenes rely on it, with a coherence score from 0 to 100. It costs 3 credits a question, shown before you ask. It writes no prose, and if the read fails, your credits come back.

Two details matter here. The baseline is frozen when you create the alternative, so later edits to the main draft cannot quietly change what you are comparing against. If you edit one of those scenes in the main draft afterward, the comparison flags it, and its saved baseline may no longer be readable. And putting an adoption back undoes only that adoption. Edits you made elsewhere in the book since then, your notes and your other alternatives stay as they are.

A fantasy author is revising Book 2 of a trilogy. In the current draft, Maren swears the oath at Greywater in Chapter 14, and Book 3 is planned around it. A beta reader says the oath feels too easy.

The author reviews the adoption, confirms that three scenes will be replaced, and puts the alternative into the main text. Rereading the confirmation page, the author has second thoughts: the old version sets up a payoff planned for Book 3. “Put it back” restores the three original scenes, and nothing else in the book changes.

• It does not write the alternative. StoryHelm never writes your prose. Prose generation for branches is switched off in the product, not hidden behind a setting.
• The comparison does not judge the versions. It reports what changed and by how many words. Which version is better is your call.
• It does not check an alternative unless you ask. Creating, reading or comparing an alternative starts no analysis and spends no credits. Checking an alternative, or asking a what-if before you write one, is a separate read with its price shown first. It returns findings only, never wording for your scene, and your credits come back if it fails.
• It does not restructure the book in one step. Adoption replaces existing scenes only. If a scene was added to the book after the alternative was created, the review marks it as new and the alternative can’t be adopted.