Noirdoku: Murder Sudoku

There’s a body, a handful of suspects and a floor plan full of rooms. Only you, with the clues and a bit of logic, can say who did it.

NOIRDOKU is a murder sudoku: a logic puzzle where, instead of numbers, you place the suspects on the map of a crime scene. Read the clues, rule out the impossible and unmask the killer. If you enjoy sudoku, logic grid puzzles and whodunits, this is your case.

🔍 HOW TO PLAY
• Each row of the plan holds exactly one person, and each column at most one.
• Read the clues: “Irene was in the greenhouse”, “Ramón was sitting next to a plant”, “Nora was directly north of the fridge”…
• Place the suspects, cross out tiles and jot down your notes.
• The killer is the only suspect who was in the same room as the victim. When you’re sure, accuse!
• Every case has a single solution: no guessing, just deduction.
• New to the genre? A guided practice case teaches you step by step.

📅 DAILY CASE
• A new quick case every day, the same for every player.
• Race the clock to the hundredth of a second and climb the ranking of the day.
• Keep your streak alive and earn medals at 3, 7, 30… up to 365 days.

🕵️ 60 CASES WITH THEIR OWN STORY
• A theatre, a castle, a night train, a casino, a vineyard, an abbey… Every case has its own story, suspects with jobs and secrets, and an inspector who guides you.
• Hand-drawn floor plans of different sizes, full of furniture: sofas, tables, plants, fireplaces, TVs, computers…
• Many kinds of clues: rooms, objects, who was next to whom, which way each person was facing, corners, how many people were in a room…
• Five difficulty levels, from easy to expert.
• Extra hints if you get stuck: free by watching an ad, or with your crimepoints.

🏅 RANK UP
• Every solved case earns crimepoints (CP): the faster, the more points.
• Start as a Rookie Officer and rise to Crime Legend. Careful: spending CP on hints can cost you a rank.

🏆 PLAY WITH OTHERS (OPTIONAL)
• Sign in with Google to appear in the world and country rankings.
• Add friends with a code or a link, see their profiles and compare results.
• Create or join leagues: open, by request or by invitation.
• A new season every month, with gold, silver and bronze trophies for the best.
• Prefer no account? The game works just the same, all on your phone.

💾 CONVENIENCE
• Your game is saved and you can resume it any time. Made a mistake? Undo it.
• Cases work offline; the internet is only needed for ads, the daily case, rankings and friends.
• An optional daily reminder so you don’t lose your streak.

🎁 FREE
The first cases are free; further case files open by watching an ad. You can also remove ads for a while by watching a rewarded one.

For players aged 13 and over. Ready, detective? Open the case file.