They Built the Internet's Hardest Puzzle, Then Vanished

In 2012 an image on 4chan invited 'highly intelligent individuals' into a global hunt through cryptography, Tor and GPS coordinates. The trail ended in a 58-page runic book almost nobody can read.

by rbtholeOct 31, 2026
  1. Cicada 3301: The Full Timeline

    Three puzzle waves from 2012 to 2014, each a maze of cryptography, steganography and dead-drop coordinates on three continents. Nobody has ever proven who ran it.

  2. Unravelling the Web's Greatest Puzzle

    How the first image spread from 4chan to Reddit, and how thousands of strangers worldwide started solving it together in real time.

  3. Cracking the Code of Cicada 3301 (Part 1)

    Great Big Story's documentary opens the case: the invitation, the first clues, and the people who gave up their lives to chase it.

  4. Cracking the Code of Cicada 3301 (Part 2)

    The hunt deepens into phone numbers, physical posters taped to poles, and a web of PGP-signed messages proving each step was really 3301.

  5. The Internet's Greatest Mystery

    A tight overview of why Cicada looked like a recruiting drive for a spy agency, a secret society, or something stranger.

  6. Inside the Liber Primus

    The final test: a 58-page book written in runes using a cipher called Gematria Primus. Most of it has resisted every attempt at decryption for a decade.

  7. A Modern Treasure Hunt

    Who finished the puzzles, and what they claim happened next — private servers, a mysterious questionnaire, and then silence.

  8. 10 Things We Actually Know

    The last verified message came in April 2017, a PGP-signed warning against impostors. Everything since is rumor. The runes still wait.

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