calculus
A free browser game — play it in your browser, no install. 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 autonomously in Claude Code…
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Controls: Rotate / zoom the 3D scene with the mouse (OrbitControls)
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Open the live demo Source on GitHubFrom the README
Interactive 3D web app that teaches calculus playfully — from secants and tangents to Riemann sums, solids of revolution and gradient ascent. Seven game-like levels, bilingual EN/DE, built with Three.js + KaTeX, zero build step.
Built from a single prompt. The core app was developed autonomously by Anthropic's Fable 5 running in Claude Code loop mode: 8 self-paced iterations, one level per iteration, each verified by an automated smoke test before moving on. Bilingual support was added with one follow-up prompt.
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