Hide a secret message in a puzzle
Write a message, pick a puzzle, send the link. It stays sealed until your friend solves the puzzle.
How it works
- Write your message (up to 200 characters) and your name. Stuck for words? Tap an idea: birthday, a gift clue, a love note.
- Pick a puzzle and a level, and whether they may use hints (off unless you allow them). Then press Lock it in a puzzle.
- Send the link by WhatsApp, text or email. Your friend sees a sealed envelope with your name and a puzzle.
- When they complete the puzzle the envelope opens and your message appears. They can send one back with their time.
Seven puzzles to hide it in
- Sudoku: Fill the 9×9 grid so every row, column and 3×3 box has the digits 1 to 9 once.
- Zip: Draw one line from 1 through every number in order, filling every square without crossing a wall.
- Mini Sudoku: Fill the 6×6 grid so every row, column and 2×3 box has the digits 1 to 6 once.
- Patches: Split the grid into rectangles; each one holds exactly one clue, which gives its area and shape.
- Wend: Find the hidden words: drag through touching letters (no diagonals). Every letter is used once.
- Pips: Place every domino so each coloured region keeps its rule: a sum, all equal, all different, more or less than.
- Tango: Fill the grid with suns and moons, three of each per row and column, never three alike in a line; = means same, × means different.
Hiding a message for a class or a party? The word search maker takes your own words and shows your message when the last word is found.
Questions
How does the secret message work?
You write a message, pick a puzzle and send the link. Your friend sees a sealed envelope and the puzzle; the message appears the moment they complete it.
Do you store my message?
No. Nothing is stored on our server, and we have no way to read it.
Can someone read it without solving the puzzle?
It is a game lock for friends, not a safe. Don’t put passwords or bank details in it.
Can my friend use hints?
Only if you let them. Hints are off, so they have to solve it themselves; tick “Allow hints” and they get a Hint button that fills in one correct step at a time. For someone who has never played the game, pick Easy, or allow hints.
Which puzzle should I pick?
Zip is the quickest to learn (draw one line). Sudoku is the one most people know. Wend suits word lovers. Pips and Patches are for friends who like a real challenge.
Can they send one back?
Yes. After the message opens there is a “Send one back” button, with their solving time already filled in.
Is it free?
Yes, with no sign-up and no limit.