Blocks Universe’s public site doesn’t appear to state a specific 3D tool used for its branding or content, and the search results I found mainly point to the separate VR modeling app Blocks by Google, not the children’s brand “Blocks Universe” itself.

What I could verify

  • The official Blocks Universe website is focused on the shows Alphablocks, Numberblocks, Colourblocks, and Wonderblocks.
  • The unrelated Google app “Blocks” is a VR 3D modeling tool for making low-poly objects.
  • I did not find a reliable source confirming that Blocks Universe uses any particular 3D tool in production.

Most likely answer

If you meant the Google VR tool Blocks , then the answer is: it is a VR 3D modeling app used to create low-poly objects. If you meant the Blocks Universe kids’ brand, I couldn’t verify a specific 3D tool from public sources.

Practical read

So the safest answer is: no confirmed public source names a specific 3D tool for Blocks Universe. The name overlap makes this easy to confuse, but the search results only verified the Google app called Blocks.