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.
Limited hints
The game gives free starter hints and can offer more through rewarded ads.
Fresh cases
The app can download compatible level catalogs without blocking launch if the network fails.
Privacy and support
Find GridNoir’s privacy policy, terms of use and support contact here.
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.