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World Labs details its ICARE pipeline for streaming millions of Gaussian splats in real time in a web browser

The pipeline integrates Blender directly into a live Three.js runtime.

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Original postJon Barron#281
World Labs@theworldlabs#1416inTech

Millions of Gaussian splats, rendered directly in the browser.

For ICARE, the creative team designed and iterated 7 worlds with Marble, then streamed them in real time using Spark 2.0 and Three.js

Here's how the pipeline works ↓🧵

9:42 AM · Jun 10, 2026 · 5.1K Views
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World Labs@theworldlabs

One of the more interesting parts of the pipeline was the trailer itself.

Rather than rebuilding scenes for a separate cinematic workflow, the team connected Blender directly to the live Spark 2.0 runtime and animated cameras in the same worlds used for gameplay.

more in the launch post here:

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World Labs@theworldlabs

Inside the case study:

• Marble for rapid world design and iteration • Spark 2.0 for browser-native Gaussian splat streaming • Three.js gameplay and interaction systems • A Blender integration connected directly to the live runtime

Read more: https://www.worldlabs.ai/case-studies/icare

World Labs@theworldlabs

Millions of Gaussian splats, rendered directly in the browser.

For ICARE, the creative team designed and iterated 7 worlds with Marble, then streamed them in real time using Spark 2.0 and Three.js

Here's how the pipeline works ↓🧵

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World Labs@theworldlabs

ICARE is an early example of what's possible when world models become part of the creative workflow, helping teams rapidly create, iterate on, and connect interactive experiences.

Play it now: https://www.icare-game.world/

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