Worlds via code. Explorable, browser-native reconstructions of real places — researched, modelled, and quality-checked end to end by autonomous Claude Fable 5.1 agent swarms, then shipped as plain Three.js apps you can run with npm run dev
.
No game engine. No proprietary 3D tiles. Every building, storefront, sign, tree and traffic light is generated from open data and public reference imagery by code that lives in this repo.
▶ Watch the full 59-second walkthrough · 1920×1080 · aerial, plaza, Nintendo, lower level, Apple
The square and its surrounding blocks — Powell, Geary, Post and Stockton — on real terrain and a real street grid, with 129 identified storefronts, working traffic lights and cable cars, day/sunset/night, and two explorable interiors: Apple Union Square (300 Post St) and Nintendo SAN FRANCISCO (331 Powell St).
Run it |
cd union-square-sf && npm install && npm run dev |
Buildings |
453 OSM footprints · 75 hand-authored façades · 129 named storefronts |
Life |
220 pedestrians on a 1,398-node nav graph · 109 vehicles incl. Powell St cable cars |
Interiors |
Apple + Nintendo, 23 interactive objects |
Validation |
34 camera-matched viewpoints vs. real photographs · 147 comparison sheets · 9 independent reviewer reports |
More worlds coming.
Each world follows the same pipeline, and every stage is in the repo so you can re-run it:
Reconnaissance— parallel research agents pull OpenStreetMap geometry, USGS elevation, transit and street specs, and a storefront census with per-fact sources and confidence levels.Offline asset generation— Blender-as-a-library (bpy
) scripts emit optimised GLB kits: façade modules, street furniture, vehicles, vegetation, retail fixtures, pedestrian body parts.Runtime— a pure Three.js app assembles terrain, streets, façades, props, crowds and traffic from JSON specs.** Camera-match QA**— Playwright drives the real app, screenshots fixed viewpoints, and diffs them against free-licensed photographs taken from the same spot; independent reviewer agents (architect, geographer, technical artist, interaction) file reports that drive the next fix cycle.
Code and generated assets: MIT. Geometry is derived from OpenStreetMap (ODbL) and USGS 3DEP (public domain). Reference photographs are not redistributed here — their provenance is recorded per sector in each world's refs/*/SOURCES.md
. Brand names and logos identify the real businesses at their real locations and belong to their owners.