Nuts And Bolts Sort

Color Sort, Object Sort, Screw & Bolt Sort, Shape Sort · Updated Mar 30, 2026

About Nuts And Bolts Sort

In Nuts And Bolts Sort, every container is a threaded rod waiting for its matching nut. A bolt rejects any nut that doesn't share its color, forcing you to slide a hex onto the correct shank or leave it stranded. The physics are binary: either the nut fits the thread and stacks, or it sits on the workbench taking up space. You can only place a nut on a bolt that already holds exactly the same color — no cross-threading, no stacking mismatched colors. This rule turns each bolt into a vertical sorter where order matters top to bottom, because you can't remove a nut once it's seated. The puzzle emerges from the pile: a jumble of mixed colors that you must untangle by finding the right cylinder for each piece.

Sorting nuts by color onto their matching bolts is a surprisingly satisfying puzzle. It starts simple, but as the piles grow, you'll need a sharp eye and smart strategy to untangle the mess. There's a real sense of calm that comes from bringing order to the chaos, making this a perfect, addictive little brain teaser.

How to Play Nuts And Bolts Sort

Select a nut from the pile to see which bolt it matches by color.
Place a nut onto a bolt that already holds at least one nut of the same color.
If no bolt has your nut's color yet, you must wait until you free the right nut from deeper in the pile.
Complete a bolt by stacking all nuts of that color onto it in any order.
Sort every color onto its own bolt to clear the board and finish the puzzle.

Game Features

Each bolt accepts only one color of nut — mismatched pieces are rejected.
Nuts are stacked vertically on bolts, so you cannot reach a nut underneath another.
The workbench holds a random jumble of nuts that grow larger as you progress.
Every action is permanent: once placed, a nut cannot be moved to another bolt.
Color variety expands as you advance, introducing more distinct nut shades.

Frequently Asked Questions

What happens if I try to put a nut on a bolt that already has a different color?

The bolt will reject the nut — it simply won't attach. You must only place nuts that match the color already on that bolt.

Can I remove a nut after I've placed it on a bolt?

No, once a nut is seated on a bolt, it stays there. You cannot unstack or move it to another bolt.

How do I start a new bolt stack if no bolt has that color yet?

You cannot place a nut on an empty bolt unless the game gives you a starting bolt of that color. You must wait until one appears or you free the correct nut from the pile.