Knurl: Screw Sort Puzzle
AppVitaStudioPro Puzzle Contains ads
Unscrew, sort by colour, free every board. Calm to play, clever to solve.
- Downloads
- 2+
- on Google Play
- Price
- Free
- No in-app purchases
- Updated
- Sep 14
- 2026 · v1.0.0
Screenshots
About Knurl: Screw Sort Puzzle
Tap a screw, watch it spin out, drop it into a matching-colour collector. Free every board and the level is yours.
Knurl is the rare puzzle that stays calm while still making you think.
EASY TO LEARN, SATISFYING TO MASTER
- Screws pinned under a board can't be reached until you free what sits on top, so the order you choose is the whole puzzle.
- Collectors hold a limited number of screws and your holding tray is small. Fill it with the wrong colours and you are stuck.
- Rusted screws, tighter trays and extra colours raise the difficulty a step at a time, never all at once.
OVER 1000 LEVELS
37 hand-built levels open the game, then more than a thousand generated ones keep going. Every board is checked before you see it: an impossible level never reaches you.
MADE TO FEEL GOOD
- Pops, particles and confetti on every solve
- Gentle vibration you can switch off
- One-tap Undo and Restart, plus a Hint for when you are genuinely stuck
- Pick any level you have already unlocked and replay it
NO STRINGS
Plays completely offline. No sign-up, no account, no in-app purchases. Coins are earned by playing, and the game is free, supported by ads.
Good for two minutes in a queue or an hour on the sofa. How far can you unscrew?
Knurl is the rare puzzle that stays calm while still making you think.
EASY TO LEARN, SATISFYING TO MASTER
- Screws pinned under a board can't be reached until you free what sits on top, so the order you choose is the whole puzzle.
- Collectors hold a limited number of screws and your holding tray is small. Fill it with the wrong colours and you are stuck.
- Rusted screws, tighter trays and extra colours raise the difficulty a step at a time, never all at once.
OVER 1000 LEVELS
37 hand-built levels open the game, then more than a thousand generated ones keep going. Every board is checked before you see it: an impossible level never reaches you.
MADE TO FEEL GOOD
- Pops, particles and confetti on every solve
- Gentle vibration you can switch off
- One-tap Undo and Restart, plus a Hint for when you are genuinely stuck
- Pick any level you have already unlocked and replay it
NO STRINGS
Plays completely offline. No sign-up, no account, no in-app purchases. Coins are earned by playing, and the game is free, supported by ads.
Good for two minutes in a queue or an hour on the sofa. How far can you unscrew?
What’s new
Version 1.0.0 · Updated September 14, 2026
First release of Knurl: Screw Sort Puzzle. - Over 1000 handcrafted and generated levels - Unscrew the bolts and sort every colour into its own plate - Undo, restart and hints when a board gets tricky - Smooth one-handed play, works offline
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