This is a submission for the June Solstice Game Jam

What I Built

Bletchley is a web codebreaking game set at Bletchley Park, 1939–1945. You play as an anonymous codebreaker in Hut 6. Your job: decrypt intercepted Enigma messages by adjusting mechanical rotors before time runs out.

The game spans 4 levels across two cipher types — Caesar and rotor permutation. Early levels introduce the mechanics with a single rotor and generous time. By level 4, you're working with three rotors (two already solved by your colleagues), 90 seconds on the clock, and a hint you have to earn by clicking.

The hint system mirrors a real codebreaking technique: cribs — words known to appear in the plaintext. Players use them as anchors, sweeping the rotor until the word surfaces in the decrypted output. That's exactly how Turing's team worked.