Mister Blocks

LEGO AI · photo in · builds out

LEGO AI that turns your pile into builds that actually click.

Snap your loose bricks, or a model you already built. Mister Blocks finds every piece (even the hidden ones), designs four new models that really hold together, and fixes them when you say what doesn't fit.

See the first build →

Tip: pieces flat on white paper, studs up, not touching. A finished model works too.

A car, a robot, a character, a building: Mister Blocks researches it and designs it in real pieces with step-by-step instructions. About 3–6 minutes.

Live 3D · a real kid's build Drag · scroll
Chain Van

Instructions · page 1

Three steps. Real bricks.

  1. Snap your pieces

    One photo of the pile, spread out on paper. Wheels, plates and odd bits all count.

  2. Get four builds

    A car, a work truck, something that isn't a vehicle, and something that flies. With 3D steps.

  3. Build, then chat

    Send a photo of what you made, or say what doesn't fit. Mister Blocks fixes the model.

An AI LEGO builder that checks every stud

Mister Blocks is a LEGO AI: it looks at one photo of your loose bricks, counts every piece (even the ones hiding under others), and designs four new models made only from what you have. Each model comes with 3D step-by-step instructions and a parts list.

Before you see a model, a checker tests it brick by brick: every piece sits on studs of the one below, nothing floats, and no tyre rubs the body. If something doesn't fit when you build it, say so in the chat and the AI fixes the model.

You can also ask the AI LEGO builder for anything: a car, a character, a building. It researches the subject, designs it in standard pieces and gives you instructions you can print.

LEGO MOCs by category

Questions

Is Mister Blocks free?

Yes. Building from a photo, asking for a build and every building guide are free.

Is this made by LEGO?

No. Mister Blocks is an independent fan site. LEGO is a trademark of the LEGO Group, which does not sponsor it.

What should the photo look like?

Spread the pieces on white paper, studs up, not touching. A photo of a model you already built works too: the AI takes it apart and suggests what else to build.

Before you see it

Every model passes a real-brick test.

  • Studs into holesEach piece sits on studs of the one below. Nothing floats, nothing is glued.
  • Wheels spin freeTires never touch the body. Learned from a kid's truck that wouldn't roll.
  • Only your piecesBuilt from what's in your photo, every piece used once.

The gallery

Latest builds

Every picture is the real 3D model. Open one to turn it around and follow the steps. See all builds →

Loading builds…

See all builds and building guides →