Harbor Letters — Cozy Detective Puzzles

A little town. A missing parcel.

The harbor postmaster needs your help. Rain has muddled the collection register, and a few parcels have lost their names. Everyone remembers a different detail. Read the clerk’s notes, rule out impossible matches and rebuild the list.

TRY IT FIRST

Play three complete cases in the free browser demo above. The full edition costs €3 and works offline.

HOW IT PLAYS

Every note is true. Each visitor has exactly one time and one parcel, and every time and parcel is used once. Click the deduction tables to rule out or confirm matches. Each puzzle has one solution. No timer, action combat or live AI chat.

FULL EDITION

Twelve fixed cases with short fictional setups, from four-person to five-person puzzles. A daily five-person delivery based on UTC date. Seeded puzzles you can recreate from a number. English and German UI and clues. Row/column exclusions, clue check-offs, notebook, Undo/Redo, optional reveal assistance and a solution recap. Local saves, JSON backups with copyable-text fallback, a blank printable puzzle view and optional synthesized chimes.

RUN OFFLINE

Extract the full ZIP and open Harbor-Letters.html in a current desktop browser. No installation, subscription, account or online AI. Transfer demo progress with a JSON backup.

SCOPE

This is a logic-grid game with short setups, not a branching story adventure. All twelve cases share the same core mechanic. Daily and seeded cases generate clues rather than new story chapters. Browser storage, printing and generated downloads depend on the browser. Make backups regularly. The game is offline without DRM. This is an early release; external playtesting and measured demand are not claimed.

AI assistance was used for code, text and code-native illustration. Art and layout use SVG/CSS; sound is synthesized locally. Characters and events are fictional.