Interactive 3D web app that teaches calculus playfully — from secants and tangents to Riemann sums, solids of revolution and gradient ascent. 7 game-like levels, bilingual EN/DE, Three.js + KaTeX, zero build step. Built from a single prompt by Anthropic's Fable 5 running autonomo
Prompt provenance
multi-prompt-session
Signals
★ 1created 2026-06-10by pianomanstride
Fable-5 attribution
Direct Fable-created wording found: Built from a single prompt by Anthropic's Fable 5 — mentions Fable 5 (90% confidence)