Gemini 4 Hydrogen is making the whole "AI can't build real 3D worlds" argument look pretty shaky

Someone gave it a futuristic city to build in Three.js

ONE follow-up later, there's a flyable cyberpunk city with procedural skyscrapers, rain and flying traffic

And here's what gets me...

We're watching people go from a prompt to explorable worlds with barely any iteration

Imagine what happens when these models can keep building on the same world for days

Game development is about to get very interesting 👀

https://x.com/kimmonismus/status/2120940617169826037/video/1