This is a submission for the June Solstice Game Jam
What I Built
Solstice Cipher is a browser-based codebreaking puzzle game where you play a WWII-era codebreaker at a Bletchley Park-style station, racing to decrypt intercepted enemy transmissions before daylight runs out.
Each level introduces a different real cryptographic technique — starting with a simple Caesar shift, moving into substitution ciphers, and finishing with a Vigenère cipher — all decoded using an in-game "Decrypt-O-Matic" terminal helper that teaches the underlying logic instead of just asking you to guess.
The solstice theme isn't just cosmetic: every level is timed by a daylight meter that drains at different speeds depending on whether the in-game date falls on an "odd" or "even" day, mirroring how the June solstice means radically different day lengths depending on which hemisphere you're in. The in-game calendar counts up toward Day 21 — June 21, the solstice itself, which is also the final cipher level.
