🚀 BlocksFusion – A Minecraft-Like Digital Building Platform for Lego-Style Creations 🏗️

Showcase
, , ,
1

Introducing BlocksFusion, a Minecraft-like digital building platform for Lego-style creations, powered by Three.js! :artist_palette::hammer_and_wrench:

Blocksfusion lets you freely place, stack, and connect bricks in an intuitive 3D environment, bringing the joy of Lego-style building into a virtual world. Whether you’re constructing solo or collaborating in real-time, the platform offers a smooth and engaging building experience.

Current Features:

:white_check_mark: Brick-based construction with a simple and flexible UI.
:white_check_mark: Real-time multiplayer collaboration – build together seamlessly.
:white_check_mark: Explore your creations in first-person or god mode.
:white_check_mark: A creative sandbox for designing and experimenting with builds.

We’re also exploring GitHub-style version control and physics simulations internally, but the current version focuses on delivering a fast, intuitive, and fun way to build digital Lego-style creations.

:fire: Try it out now on our landing page and join our community on Discord! :rocket:

landing_background
landing_background3840Ă—1868 429 KB

:backhand_index_pointing_right: website
:backhand_index_pointing_right: discord

3 Likes
2

Wow! I literally spent an hour building the house with Lego :sweat_smile: Nice work!

3

Awesome to see BlocksFusion taking shape! :rocket: Love the real-time collaboration and first-person exploration—excited to see where this goes! Any plans for mechanism support or larger-scale worlds?

4

Hi everyone!

I’ve just published a YouTube video demonstrating BlocksFusion—a browser-based, Three.js-powered Lego-inspired building platform.

In the video, you’ll see:

  • Real-time collaborative building with interactive avatars.
  • Explosive physics interactions (rockets, jets, and destructible environments).
  • Precision building tools and detailed visual difference tracking.

Check it out here: Youtube link

I’d love to hear your thoughts and feedback!

Cheers! :brick::sparkles:

5

Quick update — ~10 months on from the June 2025 video.

Two big things shipped since then. Sharing the technical side since this is a three.js crowd.

1. URL-based persistence with a fork tree.

This is the “GitHub-style version control” I hinted at in the original post — now actually shipped as the core social mechanic. Every build state serializes into a shareable URL. Open someone’s URL → you fork it → your fork stays linked back to the chain. Attribution is preserved through the entire remix tree, and you can walk back up the lineage of any build. Happy to dig into how the serialization is structured if anyone’s curious.

2. Mobile-web first.

The stack now runs on mobile and tablet browsers, not just desktop. Touch controls, perf passes on draw calls / instancing / LOD-for-bricks. Open to going deeper on the perf side in replies.

3. Five click-to-play demos.

  • Build on a Platform — sandbox brick building
  • Collaborative Building — real-time co-build
  • FPS Destruction — destructible environments
  • Jet Destruction — vehicle + destruction
  • Marble Run — physics ball through brick tracks

All live at https://play.blocksfusion.com — click any tile, no install.

@Galago_Pat — circling back to your question: mechanism support hasn’t shipped yet, but it’s on the list. Larger persistent worlds and smarter vehicle/destructible physics at scale are what we’re chewing on next. Discord at discord.gg/s63bmeRktX if anyone wants to follow along.

Thanks again to everyone who poked at the original thread.

Not affiliated with the LEGO Group. LEGO is a trademark of the LEGO Group.