01
Touch-first deduction
Select a portrait, tap a valid square and adjust the board until every clue fits.
Noir murder sudoku
Solve the crime, one square at a time.
GridNoir blends deduction, room-based maps and suspects with clue cards. Place every person in the right scene before submitting your solution.
✓Optional account
✓Rewarded hints
✓Updatable levels
Available for iOS and Android
A board that plays like a crime scene
Each level is a case file: rooms, occupiable objects, unique people and one-row-one-column logic.
02
Limited hints
The game gives free starter hints and can offer more through rewarded ads.
03
Fresh cases
The app can download compatible level catalogs without blocking launch if the network fails.
Case collections
1,500+ crime scenes across very different settings
Explore a growing library of dossiers with original artwork, floor plans, and alibis.
150 casesVictorian Mansion
150 casesMidnight Train
150 casesMuseum Heist
150 casesMidnight Cruise
150 casesLuxury Hotel
150 casesCampus Mystery
Support
Privacy and support
Find GridNoir’s privacy policy, terms of use and support contact here.
Privacy
Data summary
GridNoir is an independent alternative for players searching for Murdoku-style or murder sudoku games. It is not affiliated with or endorsed by Murdoku. Sign-in is optional (Google or Apple) to back up your progress in the cloud; without an account everything is stored on your device. It does not ask for contacts, camera or precise location. It uses local progress, Apple/Google game services, technical activity data, a level backend and Google Mobile Ads/UMP.
Available for iOS and Android
Download GridNoir
Choose your store and start solving noir logic cases on mobile.