Decoder — Support

How to play

A secret cipher of 4 colored keys is hidden. You have 7 attempts to crack it. Load a guess into the active row and run it; the system returns hints:

HIT — a key is the right color AND in the right slot.
NEAR — a key is the right color but in the wrong slot.

Hints never tell you which slot is right — that's the puzzle. Colors can repeat. Crack it in 4 hits to breach the system; use all 7 attempts without a win and the cipher stays sealed.

Frequently Asked Questions

EASY uses 6 colors; ADVANCED uses 8. Both hide a 4-key cipher over 7 attempts.
Yes — every puzzle can be cracked by pure deduction from the hints. No luck required.
Your stats and preferences are saved only on your device. They're never uploaded. Deleting the app removes them permanently.
Yes — gameplay is fully offline. An internet connection is only used to load occasional ads.
A full-screen ad may appear between games to support development. See our Privacy Policy for details.
Email contact@twinningtrails.com with your device model and iOS version.