Vibe Coding XR: When Gemini and XR Blocks Make Prototyping Actually Fun

Vibe Coding XR: When Gemini and XR Blocks Make Prototyping Actually Fun

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I’ve been following the “vibe coding” trend for a while now. The idea that you can just describe what you want and have an LLM generate working code is impressive, but honestly, it’s been mostly limited to 2D web stuff and simple scripts. XR has been the elephant in the room.

Google’s research team just dropped something that actually addresses this. Vibe Coding XR is a workflow that connects Gemini Canvas with their open-source XR Blocks framework. The result? You type “create a beautiful dandelion” and get a fully interactive, physics-aware WebXR app on Android XR headsets in under 60 seconds. I’ve seen demos of this at CHI 2026, and it’s not just a tech demo — it’s genuinely useful.

The problem with XR prototyping

Anyone who’s built for XR knows the pain. You’re stitching together perception pipelines, fighting with game engines, and debugging low-level sensor integration. It’s slow, expensive, and most ideas get abandoned before you even know if they’re any good. Vibe coding promises to cut through that by letting you test spatial interactions and UIs directly in a headset without the overhead.

How it works

The workflow is refreshingly straightforward:

  • User opens the XR Blocks Gem in Chrome on an Android XR headset (like Galaxy XR). Type or speak a prompt: “Create a beautiful dandelion.” No XR knowledge required.
  • Gemini handles the heavy lifting. It uses multi-step planning, learns from XR Blocks code samples, and configures scene, perception, and interaction automatically.
  • Result appears instantly. Pinch to enter XR, and you’re looking at an animated dandelion that blows away when you interact with it. Share button creates a public link.

There’s also a desktop simulator for testing before deploying to the headset. That’s a nice touch — not everyone wants to put on a headset every time they tweak a prompt.

What’s under the hood

The technical side is where it gets interesting. Vibe Coding XR combines Gemini’s long-context reasoning with specialized system prompts and curated code templates. The system handles spatial logic automatically, which is the hard part. Depth sensing, hand tracking, physics — all of that is abstracted away.

I’ve seen similar approaches before, but they usually fall apart when you push them beyond toy examples. Google’s team has been iterating on this for a year, and it shows. The generated apps are actually functional, not just pretty placeholders.

The catch

Let’s be honest — this is still early. The template library is curated, so you’re not going to build a full VR game this way. But for rapid prototyping of UIs, interactions, and educational demos? This saves days of work. I’ve wasted entire weeks on ideas that died in the first test. Being able to validate in a headset within a minute changes the iteration cycle completely.

Try it yourself

The live demo is up, the tech report is published, and XR Blocks is open source on GitHub. If you’re building for XR, this is worth your time. Even if you’re just curious about where vibe coding is headed, this is a concrete example of the direction.

I’m going to be playing with this more over the next few weeks. Expect a follow-up once I’ve put it through some real-world abuse.

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