Red Thread: Detective Puzzles

Pull the red thread and solve the case. Red Thread is a crime sudoku and a collection of detective puzzle games for armchair detectives: no luck, no guessing, only deduction. Think of it as a murder mystery puzzle you solve with logic.

🏠 CRIME SCENE – a crime scene sudoku
Place every suspect in the house. Each row and each column holds exactly one person, nobody stands on the furniture, and every clue is true. When everyone is in place, accuse the only suspect who was in the same room as the victim. Whodunit, solved by logic.

🕵️ SUSPECTS – innocent or guilty?
Twenty people, one grid, a chain of true statements. Mark each person innocent or criminal, but only when the evidence proves it. Every verdict unlocks a new clue. You never need to guess.

WHY DETECTIVES LOVE IT
• A case of the day in each mode, the same for everyone: easy on Monday, fiendish on Sunday
• Endless cases in four difficulties, on boards from 6×6 to 9×9, each with exactly one solution
• Casefiles: short detective stories told across eight cases, with new ones added regularly
• Hints that explain the deduction step by step, never a random reveal
• Notes and pencil marks for your theories, highlighted rows and columns
• A guided tutorial the first time you open each mode
• Daily streak, and a result you can share without spoilers
• Plays offline: logic puzzles for the train, the plane or a quiet night in

A classic, light-hearted mystery mood: thefts, pranks and secrets at the manor, with no gore at all.

Red Thread is free to play, with ads. Hints are always optional.

WHO IT IS FOR
Fans of detective games, murder mystery puzzles, whodunits and logic puzzles such as sudoku: a calm mystery game you can play offline, one case at a time.