Spark 2.0 is an open-source 3D Gaussian Splatting renderer built on THREE.js and WebGL2. Featuring a new streamable Level-of-Detail (LoD) system and virtual memory, it streams massive 100M+ splat worlds to any browser, mobile, or VR device in real-time.
Traditional 3D modeling builds surfaces piece by piece with texture-mapped triangles. 3D Gaussian Splatting uses millions of semi-transparent ellipsoids (splats) that blend together to create hyper-realistic detail. Spark 2.0 takes this further with a streamable LoD system.
Built on Three.js and WebGL2, Spark 2.0 is not just rendering splat scenes, it is turning them into something you can actually stream, refine, and interact with across desktop, iOS, Android, and VR.
With .RAD streaming, progressive refinement, and virtual-memory-style splat paging, World Labs is pushing toward 100M+ splat worlds that stay explorable on everyday devices.
For example, the Coit Tower scene (over 40 million splats) runs fully interactive in the browser:
World Labs also provides richer worlds you can explore with the same smooth, real-time interaction — all directly in the browser!
I saw on social media earlier that it was open source... but actually, it's not.
About Spark 2.0 on Product Hunt
“A streaming engine for huge 3D Gaussian worlds”
Spark 2.0 launched on Product Hunt on April 16th, 2026 and earned 89 upvotes and 3 comments, placing #21 on the daily leaderboard. Spark 2.0 is an open-source 3D Gaussian Splatting renderer built on THREE.js and WebGL2. Featuring a new streamable Level-of-Detail (LoD) system and virtual memory, it streams massive 100M+ splat worlds to any browser, mobile, or VR device in real-time.
Spark 2.0 was featured in Virtual Reality (46.2k followers), Open Source (68.3k followers) and 3D Modeling (1.9k followers) on Product Hunt. Together, these topics include over 13.4k products, making this a competitive space to launch in.
Who hunted Spark 2.0?
Spark 2.0 was hunted by Zac Zuo. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how Spark 2.0 stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Zac Zuo
Hi everyone!
Traditional 3D modeling builds surfaces piece by piece with texture-mapped triangles. 3D Gaussian Splatting uses millions of semi-transparent ellipsoids (splats) that blend together to create hyper-realistic detail. Spark 2.0 takes this further with a streamable LoD system.
Built on Three.js and WebGL2, Spark 2.0 is not just rendering splat scenes, it is turning them into something you can actually stream, refine, and interact with across desktop, iOS, Android, and VR.
With .RAD streaming, progressive refinement, and virtual-memory-style splat paging, World Labs is pushing toward 100M+ splat worlds that stay explorable on everyday devices.
For example, the Coit Tower scene (over 40 million splats) runs fully interactive in the browser:
World Labs also provides richer worlds you can explore with the same smooth, real-time interaction — all directly in the browser!