Tencent open-sourced WorldClaw (Hunyuan3D-WorldClaw), a system that generates complete 3D open worlds from a single text prompt
Example: type “中世纪雪村，有平原有水有码头” (medieval snow village with plains, water, and docks) → generates a full 3D world
Key differentiator: output is editable — every tree, building, and boat is an independent mesh that can be imported into Blender for repositioning, model swapping, and resizing
NOT video or gaussian splatting — produces real, usable 3D engineering files
Architecture is an agentic PCG pipeline: decomposes prompts into regions, terrain, assets, materials, and spatial relationships, then chains multiple generation/rendering/placement stages
Published on arXiv, code available on GitHub
Notable Replies
@yozum.vibe: points out it’s more of an agentic PCG pipeline than a one-shot generator — the focus should be on “does it produce an editable draft” rather than “does a finished world come out”
@liambroza: tested it, reports “really good output”, links to demo at tencent-hunyuan.github.io
@polyfork3d: raises the 3D asset supply problem — who provides all the assets to populate these generated terrains?
Engagement
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