Free puzzle · ages 6+
Japanese Puzzle Box (Himitsu-bako)
Himitsu-bako are secret boxes from Hakone, Japan, covered in wood mosaic. Each panel only slides when the one before it has moved. Find the order and open the box.
Himitsu-bako secret boxes from Hakone.
- 6+ages
- 5levels
- 35,000challenges
- Japanfrom
How to play
- Turn the box to look at every side.
- Tap or slide a panel. Locked panels won’t move until another one has.
- Find the order that frees the lid, and open the box.
- Harder boxes need you to move a panel back again.
What your child learns
Each panel only moves after another, so children learn to test, notice cause and effect, and remember what they tried.
- Logical reasoning Notice what each move unlocks.
- Persistence Try, check and change your mind.
- Working memory Remember the order the panels slide in.
Pick a level
Start easy, or jump straight to a challenge.
Ready to try Puzzle Box?
Free in the browser on phones, tablets and computers. No sign-up, no ads.
Questions parents ask
Is Puzzle Box free?
The first 3 Beginner challenges of Puzzle Box are free in the browser, with no sign-up and no ads. Family Pro unlocks every challenge at all five levels, the hint coach, solutions and saved progress. During early access, every level is open to try.
What age is Puzzle Box for?
Puzzle Box is recommended for ages 6+. Start on Beginner and move up a level whenever it feels easy.
What does Puzzle Box teach?
Logical reasoning: Notice what each move unlocks. Persistence: Try, check and change your mind. Working memory: Remember the order the panels slide in.
Does it work on phones and tablets?
Yes. It plays in any modern browser on phones, tablets and computers, with touch or a mouse.
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