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Worldsmith

A free web demo — play it in your browser, no install. Real Earth and infinite procedural worlds in your browser. Climate-driven biomes, river networks from flow accumulation, and export to PNG, SVG, or 16-bit heightmaps for Unity, Unreal and Blender. No dependencies, no server, no API keys.

by @TheDatawiz-dot · TheDatawiz-dot/Worldsmith on GitHubLANG JavaScript★ 2HOSTED ON THEDATAWIZ-DOT.GITHUB.IOUPDATED 16 Aug 2026

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Controls: World: earth (real data) or Generated

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From the README

A deterministic procedural geography engine that runs entirely in the browser. It generates infinite fictional worlds from a seed, and renders real Earth from NOAA ETOPO1 measured elevation and bathymetry — through the same terrain, climate, hydrology and rendering pipeline.

Export to PNG, SVG, JSON, or 16-bit heightmaps for Unity, Unreal and Blender.

*Raising sea level over NOAA ETOPO1 measured elevation.

Read the full README on GitHub →

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