A detective puzzle game

BruceDeduce

Sudoku logic. Murder mystery.

Every case is a floor plan full of coloured rooms. Place every suspect using pure logic. Whoever stood in the victim's room is the culprit.

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Today's case, free in your browser.

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Detective Bruce in glasses and a trench coat

The case file

What if sudoku were a murder case?

There is a victim, there are suspects and there is a floor plan. But where was everyone standing? Three rules hold the answer.

IOne per row and columnEvery row and every column holds exactly one suspect.
IIOne per roomEvery coloured room holds exactly one suspect.
IIINobody touchesSuspects never stand next to each other, not even diagonally.

Culprit

Is everyone in place? Whoever stood in the victim's room is the culprit.

Every case can be solved by reasoning, without guessing. Stuck? A hint from Bruce points to the reason. You draw the conclusion.

An Amsterdam case halfway through: coloured rooms, placed suspects and crossed-out cells — Exhibit A: case 7, Amsterdam

Case solved: Bruce next to the caught culprit behind bars

Eight suspects from the game in a line-up

Everyone is a suspect

The Ducy Times on the solved case in Paris

Bruce Deduce creator confesses: “I do it for the fun of it”

A special edition hangs on the pinboard in Bruce’s office. In it, Bruce questions his own creator: Marc of Dutch Pixel Games, the independent game studio from Houten in the Netherlands. Marc has been making games since he was ten, and his daughter Julia is Bruce’s biggest fan.

“Grand missions? Heavy visions? Marc makes games because he really enjoys it.”

And every city you solve makes the paper too. Your pinboard grows with your journey.

Journey through Europe

From Amsterdam to Rome

Five cities, each with ten cases in three difficulty levels, their own music and a special case that opens as a comic. Solve a city and your journey continues to the next.

A sealed transport crate by a window overlooking the Amsterdam canals — Amsterdam
Operation Night Watch
A masterpiece is leaving the city under guard. Someone has broken the seal on its transport crate.

Amsterdam
Operation Night Watch
A masterpiece is leaving the city under guard. Someone has broken the seal on its transport crate.

An empty golden picture frame in a gallery of the Louvre — Paris
The Missing Smile
The Mona Lisa has vanished from the Louvre. Only an empty frame and seven conflicting statements remain.

Paris
The Missing Smile
The Mona Lisa has vanished from the Louvre. Only an empty frame and seven conflicting statements remain.

A clockwork mechanism in front of a night view of Westminster — London
The Silent Clock
Westminster’s great clock has suddenly fallen silent. This was no accident.

London
The Silent Clock
Westminster’s great clock has suddenly fallen silent. This was no accident.

An empty film canister and a film reel in a dark cinema — Berlin
The Missing Film Negative
The premiere is one film copy short. Someone swapped the festival negative.

Berlin
The Missing Film Negative
The premiere is one film copy short. Someone swapped the festival negative.

A golden chalice by candlelight with St Peter’s Basilica in the background — Rome
The Poisoned Chalice
Shortly before a ceremony, the ceremonial chalice turns out to be coated with a lethal substance.

Rome
The Poisoned Chalice
Shortly before a ceremony, the ceremonial chalice turns out to be coated with a lethal substance.

Bruce at his desk in his office, with newspapers on the pinboard and souvenirs in the cabinet

The office

Every solved city leaves a trace

Between cases you are back in Bruce’s office. That is where the post arrives, and you will notice.

SouvenirsA keepsake from every city for the cabinet, like a Delft blue canal house.
Newspapers on the pinboardThe Ducy Times reports on every city you solve.
The map of EuropeFollow your route from Amsterdam to Rome and see how many cases are still open.

More cases

Always a new case on your desk

Every day

Daily case

The same puzzle for everyone. Play it in the app or straight away in your browser and share your result.

Unlimited

Cases

Finished the campaign? Cases mode has unlimited extra puzzles for every city, from relaxed to tough.

For beginners

Bruce Academy

Bruce teaches you the rules in a short practice case, step by step and without penalties for mistakes.

Scoring

Three magnifiers

You start every case with three magnifying glasses. A wrong suspect costs you one.

Start for free in Amsterdam

The Amsterdam cases are free to play. Ready to travel on? Unlock Paris, London, Berlin and Rome one city at a time, or all at once with the Europe Pack, which also removes ads.

Who is the culprit?

A new case is waiting today. No download, no account. Just start.