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Author: Charlotte Lighter
  • Activity
  • 15 minutes

Could you be a code breaker?

Updated Thursday, 16 December 2021
Test your problem-solving skills and try to crack our secret messages using clues.

Find out more about The Open University's Mathematics courses and qualifications



Code Break is an interactive Web app consisting of three ciphers: Pigpen, Caesar and simple substitution (solved by frequency analysis). Earn stars for each challenge, and learn about code-breaking through the ages by playing our interactive ‘Could you be a code breaker?’

Front image capture for the game 'CODE BREAK' Click on the image above to start playing CODE BREAK.

Instructions

For best results, use a modern web browser. Upgrade to the latest version of Internet Explorer or try a free alternative like Google Chrome, Firefox or Safari.

If you would like to enter the world of mathematics to see how it underpins the world around us then check out these free courses from OpenLearn:

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