Practice case
The Missing Key
The harvest starts at seven, but the master key is gone from its hook. Your first day, your first case.
- 1 chapter
- no murder
- teaches the rules
- plays offline right away
Murder Sudoku: Solve the Grid, Find the Culprit
Sudocrime is a murder sudoku app for iPhone, iPad, Android and your browser. You solve the grid, question suspects and place them on a floor plan until you know who was where, and when. That is how you find the culprit, with no guessing.
Apps for Germany, Austria and Switzerland. Browser version at play.sudocrime.app.
Can’t find the app in your store?
Sudocrime is currently on the App Store and Google Play in Germany, Austria and Switzerland.
Does your store use a different country? The app isn’t available to download there just yet.
The country of your Apple or Google account is what counts, even while you’re travelling.
Explore the casesno subscription The practice case and “Silence at Lindenrain” are included in full. Each additional story costs €0.99 in Germany and Austria or CHF 1.00 in Switzerland, as a one-time App Store purchase.
Every statement leads you to a room.
An armchair in the entrance hall, a shelf in the reading room, a statement that changes everything: in Sudocrime, you investigate inside the house.
Check the statements and place the suspects in the furnished rooms. Each row and each column holds exactly one person. When all the clues fit, you know who was alone with the victim.
Explore the floor plan from above or as a 3D diorama.
Investigate in your browser
Read, solve, accuse
Before chapter one, the case file introduces the people and your role. Then every chapter follows the same four steps.
Read the case
A chapter opens with a scene, then you read the suspects’ statements. Sudocrime can read them aloud for you.
Solve the sudoku
Every chapter comes with a sudoku. When you get stuck, a hint shows you the next step of reasoning.
Place people on the floor plan
Each row and column holds exactly one person, and every statement is true. That tells you who was where.
Name your suspect
Once exactly one person is alone with the victim, you have your suspect. Snapshots and times collect on your evidence wall.
The cases
Two cases come with the app. Each additional story costs €0.99 in Germany and Austria or CHF 1.00 in Switzerland, as a one-time App Store purchase.
Story
Silence at Lindenrain
A manor house reception, and a president who never lives to see it. Reconstruct his final day.
- 6 chapters
- a code word takes shape
- downloads on first open
Story
The Nightingale of the Odeon
The diva dies before her gala speech. What did she mean to tell the Odeon?
- 6 chapters
- 2 of 5 magnifying glasses
- set in a theater in 1928
Story
The Venice Night Train
Glass designer Margot Thalberg never makes it to Venice. Follow her last day on the night train, hour by hour.
- 8 chapters
- 3 of 5 magnifying glasses
- 9×9 sudoku from chapter 5
More cases are on the way. You can buy further stories on the App Store.
What is a murder sudoku?
A murder sudoku combines a number puzzle with a crime story. You solve a sudoku, then draw conclusions about people: who was in which room and when, and who was alone with the victim? Because every statement is true, you can prove who the culprit is by logic, with no guessing.
Sudocrime keeps the two layers apart. The sudoku follows the classic rules for rows, columns and boxes, and in the stories it earns you a code digit. The floor plan has a similar rule for people: each row and each column holds exactly one. The square left free at the end belongs to the victim.
That makes Sudocrime a good fit for adults who enjoy logic puzzles, murder mystery puzzles and cozy mysteries, and for sudoku players who want a story with their numbers. You investigate like a detective, except that every clue is true and every case can be solved by logic.
What you get
- Hints that teach
- A hint first shows you where to look, then the next step of reasoning. Only the third step fills something in.
- New to sudoku?
- The question mark on the puzzle screen explains the rules step by step.
- Read aloud
- Listen to scenes and statements, pause and resume. Autoplay starts the next recording if you like.
- Floor plan and 3D diorama
- Switch between a flat view and a 3D model of the house.
- Evidence wall and code word
- Snapshots, times and notes keep the case together. In every story, a code word takes shape chapter by chapter.
- Offline too
- In the app, the practice case works without internet from the start, and so do fully downloaded stories.
- Easy to read
- German or English, light or dark mode, larger text, sounds and haptics as you like.
- No account, no ads
- No sign-up, no ads, no advertising ID. Your progress stays on your device. Pseudonymous usage data helps find bugs, and you can opt out anytime in Settings.
Quick answers
What does Sudocrime cost?
The app includes the practice case and “Silence at Lindenrain”, both playable in full. Each additional story costs €0.99 in Germany and Austria or CHF 1.00 in Switzerland, as a one-time App Store purchase. There is no subscription. You can buy further stories on the App Store.
Are there ads?
No. Sudocrime shows no ads and uses no advertising ID. You don’t need an account either.
Do I need to know sudoku?
No. The practice case teaches you the rules with a small 4×4 puzzle, and the question mark on the puzzle screen explains them step by step at any time.
Can I play offline?
Yes, in the app. There the practice case works without internet right away, and so do fully downloaded stories. New downloads, purchases and newly generated narration need a connection.
Which devices does Sudocrime run on?
Sudocrime is available on iPhone and iPad from the App Store, on Android phones and tablets from Google Play, and right now in your browser at play.sudocrime.app with nothing to install.
Your first case is waiting
Get Sudocrime or play right in your browser. The practice case has a single chapter and shows you everything you need.
Apps for Germany, Austria and Switzerland. Browser version at play.sudocrime.app.