Twine
Twine organizes branching narratives as a visual passage graph, publishes directly to HTML, and extends logic and presentation through story formats such as SugarCube and Harlowe.
Why use it
Writers and designers can produce clickable narrative prototypes quickly and validate structure, pacing, and choices before engine integration.
Where it fits
Use art, animation, audio, levels, and narrative to make the game easy to read and its world convincing.
What to check
Large stories demand naming and version-control discipline, and macros are not fully portable between story formats.