emollick/ai-portals: Code for an endless AI-generated 3D world experience

In October 2026, Ethan Mollick used Claude to generate Portals, an endless automated browser experience consisting of 471 procedural 3D worlds. The underlying code, amounting to about 1.4 million lines of JavaScript, was primarily designed and written by AI agents operating in parallel with minimal human direction. The repository contains the complete engine, shared building blocks, and source files required to run or deploy the site locally. Open article →