A workbench for Cicada 3301's rune book — the Gematria Primus alphabet and the actual ciphers that cracked the solved pages. Decode the known ones to learn the machinery, then turn it loose on the 50-odd pages still standing.
SOLVED PAGES ~19 · UNSOLVED ~56 · LAST VERIFIED SIGNAL 2016 · STATUS OPEN — NEVER PUBLICLY FINISHED
The 2012 and 2013 puzzles were run to the end by a handful of people, who were then contacted privately and went quiet. In 2014 came Liber Primus: 58+ pages of Gematria Primus runes. Only a opening stretch has ever been decrypted; the bulk is unbroken, and the trail went silent after a 2016 message reading "the path lies empty… beware false paths." I haven't solved it and neither has anyone publicly — this tool helps you work on it honestly, not pretend it's done.
Cicada's invented alphabet: 29 runes, each mapped to a Latin letter (or digraph) and a prime. Tap any rune to drop it into the decoder. Note the deliberate ambiguities — U/V, C/K, S/Z, NG/ING, IA/IO — they make plaintext read oddly (KNOW→CNOW, YOU→YOV).
Paste runes or build a string from the palette, choose a transform, and read the transliteration. Calculations run mod 29. The presets load real solved pages so you can watch the method work end to end.
The decrypted pages are philosophical — warnings, koans, instructions ("amass great wealth; never become attached to what you own"). They were broken with the very transforms above: Atbash, small Caesar shifts, and a rune-keyed Vigenère, sometimes with certain F-runes skipped to throw off solvers. The remaining pages resist all of it; most look statistically flat, hinting at a running key or a system no one has pinned down.
Cicada's own last guidance was to trust nothing unsigned. Authentic 3301 messages were signed with OpenPGP key 7A35090F — verify that signature before believing any "new clue," and treat self-proclaimed full solutions as community proposals until the method is reproducible. This is exactly the spirit your puzzle-gate should carry: prove the work, don't take the claim.