BusyBees

Secret codes for kids: write a coded letter

Invent a code, write a secret message and swap it with someone who has the key. A proper challenge for older children.

  • From age 8
  • 20 min
  • Indoors
  • Thinking
  • No prep

You need

  • Paper
  • A pencil

The steps

  1. Write the alphabet in a row. Underneath, write it again, but start three letters later.

  2. That is your key: each letter on top is swapped for the one below it.

  3. Write a short secret message in code and fold it up.

  4. Give it to someone who has a copy of the key, and wait for a coded reply.

Keep an eye on

Secret messages are for jokes, riddles and kind surprises, never for leaving somebody out.

To keep it going

Invent your own code with shapes or numbers in place of letters.

At a glance

From age
8
How long
About 20 minutes
With you
They can play alone for a few minutes.
In the app's words
Good for patience, spelling and keeping a secret

A grown-up is always responsible for safety and supervises play. You know your child, so you have the last word on what suits them.

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Written by BusyBees. Published 13 October 2026. The games, ages and safety notes are the ones in the app.