Puzzle Den

Nut Sort: The Screw Puzzle

Tap a bolt to lift its top nuts, then tap another bolt to screw them on. Sort every bolt into a single color.

About Nut Sort

"Nuts and bolts" screw puzzles are one of the biggest sorting trends on mobile. Nut Sort brings the same satisfying stacking with chunky hexagonal nuts.

Nut Sort at a glance

GenreSort game
PriceFree, no download or sign-up
ControlsTap
Typical game length10 to 15 minutes for 6 levels
LivesNone
Works onPhones, tablets and computers, in any modern browser
Daily challengeYes, the same puzzle for everyone each day

How to play Nut Sort

  1. Tap a bolt. Its top nuts of one color lift up.
  2. Tap another bolt. They screw on if it is empty or has the same color on top.
  3. Sort every bolt. Each bolt holds 4 nuts of one color.

Rules

Levels and difficulty

24 levels growing from 4 to 9 colors. Your progress is saved on your device, and you can replay any level you have unlocked.

Scoring

More colors score more, with a penalty for extra moves. Harder level tags multiply points. Daily challenge scores can be shared with friends.

Tips and strategy for Nut Sort

How we built and tested Nut Sort

Every level is checked by a solver before it appears, so each can be completed.

Frequently asked questions

Is every level solvable?

Yes, each is verified by a solver.

How many nuts fit on a bolt?

Four.

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Written and tested by Puzzle Den Editorial Team

Game design and testing. The Puzzle Den team designs, builds and play-tests every game on the site, and writes and reviews each guide. We check every level generator for solvability before a game goes live.

Published 30 September 2026 · Last updated 30 September 2026 · How we build and test games