Code Breaking

Codebreaking puzzles ask you to think like a cryptographer, spotting the pattern behind a scrambled message and working backwards to the original word.

This puzzle gives you fifteen classic codes to crack, from Caesar ciphers and Morse code to a few more unusual tricks like periodic table wordplay, and asks you to pick the correct decoded word from four options. Each one comes with a short explanation afterwards, so the method behind every code is always made clear. Work through them all and find out whether you finish a Code Novice, still Decoding, a sharp Cipher Sleuth, or a true Master Cryptographer.

FAQs:

What kinds of codes are included?
A mix of classic ciphers like Caesar and ROT13, along with Morse code, binary, and a few unusual wordplay-based codes.

Do I need any background in cryptography?
No, every code is explained in the question itself, so no prior knowledge is needed.

Can I play it again?
Yes, “Try again” reshuffles both the puzzles and the answer order.

Is the puzzle free to play?
Yes, no sign up or download required.