About Shiftoku

Shiftoku is a daily number puzzle about small moves with visible consequences. Each puzzle asks you to find a hidden five digit code by shifting digits up and down around a 0 to 9 ring.

The aim is to keep the game quick enough for a daily habit, but deep enough that a careful solve feels earned. The Practice Vault exists so players can warm up on older locks, compare approaches, and build a feel for connected runs without waiting for tomorrow.

Shiftoku stores progress in your browser. That keeps the game lightweight: no account is needed to play the daily puzzle, keep local settings, or return to an unfinished attempt on the same device.

The game is designed for players who like Wordle-style daily rituals but want a more mechanical puzzle. Instead of guessing a word from a dictionary, you are manipulating a visible code. A good solve usually comes from noticing which digits are already close, protecting useful positions, and choosing connected runs that improve several numbers at once.

The daily lock is the main event. Everyone gets the same lock for the day, which makes results easy to compare and share. The Practice Vault is separate: it gives newer players somewhere to learn the rhythm of shifting, wrapping, and reading colour clues without risking their current daily streak.

Shiftoku is intentionally simple on the surface. There are no accounts to create, no long tutorial gates, and no timer pressuring you to rush. The goal is a puzzle that can be opened quickly during a spare moment, while still leaving room for sharper strategy as you learn how the lock system behaves.

Feedback, bug reports, and ideas are welcome. If something feels unclear, too easy, too hard, or just oddly worded, the contact page is the best place to send a note.