Screw Jam

Object Sort, Screw & Bolt Sort, Shape Sort · Updated Mar 24, 2026

About Screw Jam

Screw Jam operates on a container-mechanic where the container is a wooden board fitted with a set of vertical pegs. Each peg can hold a stack of screws, but only screws of a matching shape will slide onto it — a hex screw onto a hex peg, a Phillips screw onto a cross-shaped peg. The board rejects any screw that doesn't match the peg's profile, forcing you to keep rearranging until every peg is filled with its proper fastener. The game turns sorting into a physical logic of slot and key: you can only release a screw from one peg if the target peg accepts it, and screws already seated block the ones beneath them. That single rule — match the shape or the stack won't move — drives every decision, turning a handful of loose screws into a puzzle that demands careful sequencing.

Slide the screws into place to solve this satisfying puzzle! It's a perfect way to unwind, offering a unique kind of fun as you strategically sort and organize each piece into its perfect spot. The simple, tactile gameplay is surprisingly addictive. Give it a try!

How to Play Screw Jam

Select a peg to pick up the top screw from its stack.
Move the screw to a different peg that has the same shape profile.
If the target peg already holds screws, place your screw on top — only screws of the same shape can stack together.
Continue transferring screws between pegs until every peg contains screws of a single matching shape.
When all pegs are filled with uniform screws, the puzzle is solved.

Game Features

Each peg accepts only screws that match its shape profile, creating a strict fit-or-reject sorting rule.
Screws stack vertically on pegs, and you can only move the top screw from a stack.
Multiple shape types — hex, cross, and others — require you to identify the correct peg for each screw.
The board layout presents a fixed number of pegs and screws per puzzle, with no extra storage space.
A clear visual feedback shows whether a screw snaps onto a peg or is rejected.
The game offers a range of puzzles from simple single-shape stacks to complex multi-shape arrangements.

Tips & Strategies

Focus on freeing screws that match a nearly empty peg first to create more room for rearrangement.
If a screw blocks a matching screw beneath it, move the blocker to any peg that accepts its shape.
Plan moves by looking ahead: a screw placed on the wrong peg will block that peg for its intended shape.
Use one peg as a temporary holding stack for screws that don't yet have a permanent home.