Plot Tension Arc Simulator

Creative writing lives or dies on structure: how tension rises, competes, and resolves across a story's length. This simulator turns the classic Freytag pyramid — exposition, inciting incident, rising action, climax, falling action, resolution — into an editable 3D curve. Conflict intensity, character stakes and pacing reshape where the climax lands and how sharply the story gets there; adding subplots layers secondary tension curves that compete with the main arc. A reader marker travels the shape in real time, while live narrative-coherence and pacing-variance scores show, numerically, how a single clean climax versus several competing peaks reads to an audience — exactly the diagnostic editors run on a manuscript's pacing chart.