Enigma Machine Simulator

Enigma Machine Simulator is a browser game from DEXM Labs, made by Arthur Jones and launched in October 2026. At its heart is a working Enigma I as the German Army and Air Force used it: rotors I to V with their real wiring and turnover notches, reflector B, ring settings, a ten cable plugboard and the double step of the middle rotor. You can use it as a plain simulator, typing or pasting letters and watching them come out enciphered.

The daily game turns that machine into a puzzle. Every day there is a new numbered intercept and a key sheet listing the three rotors and their order, the ring settings, the start positions and the plugboard pairs, except that one cable has been smudged. You set the machine from the sheet, guess which pair of letters the missing cable joins, and run the intercept through. A wrong cable leaves some words garbled; the right one gives the whole message. You then type your reading as the answer: each try shows a row of squares, one per word, green where the word is right, and you have six tries. Your played, won, streak and best counts are kept in the browser, and a win adds to the points shared by the maker's games on dexmlabs.app.

It differs from daily cryptograms because you never solve a letter swap by pattern. The work is in setting the machine correctly and narrowing down which letters the missing cable could join, so it suits players who like ciphers and the history of codebreaking. The page also explains how the machine works, why no letter can encipher as itself, and how the Polish Cipher Bureau and Bletchley Park broke it. A practice intercept gives more rounds once the day's is done. The day's key is new each day, while the plain message comes from a set of 20 that repeats in turn, so the work of setting the machine is what changes.