Babylon.js

Verdict: Open-source web 3D and game engine backed by Microsoft, with an online Playground, physics, WebGPU support and editor tools. No built-in AI; game logic is JavaScript/TypeScript that AI coding assistants can help write.

Free (Apache-2.0 open source) · Official site: https://www.babylonjs.com · source checked 2026-10-22 (HTTP 200)

GitHub repo · ★ 26.2k stars (as of 2026-10-22) · More open-source AI

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