I built this branching scenario prototype in Twine, a free, open source tool for creating nonlinear stories.
After writing the ideal path for a branching scenario, write the mistakes and consequences. These create the alternate paths in the scenario.
A color-coded branching scenario flowchart shows you the decision structure at a glance. Use the DotGraph proofing format with Twine to create one.
The free open source tool Twine makes planning, writing, and creating branching scenarios easier. It provides a simple way to create functional prototypes.
On reddit, someone asked how to manage the complexity of branching scenarios and keep them
Storyboarding Branched Scenarios – ThinkingKap This is something I’ve struggled with–a good method for storyboarding