Author guide

How to Write a Branching Story: Design Causality Before Routes

The most common branching-story mistake is drawing a large tree before deciding what should happen inside it. Routes are not a numbers game. They should grow from the concrete actions characters take under pressure.

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Begin with actions that cannot coexist

An effective node offers mutually exclusive actions rather than attitudes: stay to protect a witness, publish the evidence, accept a bargain, or leave the scene. The action must change what the next scene can contain.

If every option can be completed five minutes later, none deserves a branch. Start by finding what the character genuinely cannot keep at the same time.

Give each route its own causal promise

Beneath each route title, write one promise: whom this route follows, what it sacrifices, and which relationship it changes. Later chapters must continue paying that promise rather than forgetting the origin after a scene change.

World rules may remain shared, while information order, available characters, and emotional center should genuinely differ.

Control scope instead of faking it

Three complete routes are better than twenty unfinished ones. Keep two to four major nodes on a complete path and leave enough prose between them for an action to become lived experience.

A shared scene works only when the characters arrive in changed circumstances and the text acknowledges the difference. Copying one passage across every route is not reuse; it cancels the choice.

Let endings answer the accumulated question

Endings need not be ranked good or bad. They should answer what each route came to believe. Protecting one person may cost public truth; publishing truth may damage intimacy. An ending completes a cost rather than awarding a prize.

After drafting, trace every setup, promise, and object backward to its payoff on each route. An unfulfilled difference becomes the first emptiness a reader notices.

FAQ

Questions readers and authors ask

Does a branching story need a flowchart?

A flowchart helps visualize causality, but it is a checking tool. Motivation, scene change, and resolution still need to be articulated in prose.

How many endings should a first project have?

Two or three complete and genuinely different routes are usually manageable. Prove that differences can be sustained before expanding.