Murdoku Online: Solve a Free Murdoku-Style Case Every Day
The murdoku craze turned sudoku into a crime scene, and you can play that same kind of puzzle right here, free, in your browser. Cluedoku serves a brand new murdoku-style case every day: read the witness clues, place the suspects on the grid, and work out who was alone with the victim.
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What Is Murdoku?
Murdoku is a puzzle genre that crosses classic sudoku with a murder mystery. The name comes from a bestselling book series by puzzle maker Manuel Garand: each case gives you a grid, a cast of suspects, a victim, and a list of clues, and every case has exactly one solution you can reach by pure deduction. Instead of filling rows with digits, you place people, and the payoff is not a completed grid but an answer to a question: who did it?
In the summer of 2026, murdoku went viral on TikTok, first in Spain and then across BookTok, with creators solving cases on camera and comparing deductions in the comments. That wave turned a book format into a genre almost overnight, and interest in playing murdoku online, rather than on paper, exploded with it.
How a Murdoku-Style Puzzle Works
The core rules are quick to pick up. Every suspect occupies exactly one cell, no two suspects share a row or a column, and every clue is true. Clues read like witness statements rather than formulas: he was in the kitchen, she was beside a table, those two were together. You cross off impossible cells, place the suspects you are sure about, and let each placement cascade into the next deduction. When the last suspect clicks into place, whoever shares a room with the victim is the killer. For the full rulebook with worked examples, our how to play guide walks through every clue type step by step.
Play a Murdoku-Style Case Online Right Now
Cluedoku is a detective sudoku built exactly for that itch, and it lives in your browser: no download and no signup needed to try today's case. Every day there is one fresh case, the same for everyone, with a streak to keep alive and a score to compare. Beyond the daily there is a hand-crafted campaign of more than 1000 cases across four locations, from a gentle 4x4 introduction up to expert 10x10 grids that take real detective work.
It also does things a paper puzzle cannot. Smart hints teach you the next logical step instead of spoiling the answer. Ranked duels race you against another detective on the same case, co-op lets you crack one board together with a friend, and weekly leagues give the habit a ladder to climb. The whole game is playable in 16 languages, and the mobile apps work offline. ¿Prefieres jugar en español? This guide also exists in Spanish: jugar murdoku online en español.
Is There an Official Murdoku App?
As of the summer of 2026, no. The official Murdoku game by Manuel Garand is playable on its own website, with printable cases and the book series alongside it, and its interface is available in English and Portuguese. The app stores do carry a crowd of unofficial murdoku-named apps of varying quality, but none of them is the official one.
If what you want is a murdoku-style game made for your phone, that is exactly what Cluedoku is: an independent detective sudoku with a free daily case, offline play, and multiplayer, out now on Google Play with the iOS app on the way.
| Game | Where You Play | Daily Case | Languages | Multiplayer |
|---|---|---|---|---|
| Murdoku (official) | Web, printable cases, and the book series | New web cases released on a regular schedule | English and Portuguese interface | No |
| Cluedoku | Web and Android now, iOS on the way | Yes, a new case every day | 16 languages, fully localized | Ranked duels and co-op |
Frequently Asked Questions
Murdoku is a puzzle genre blending sudoku with a murder mystery, named after the book series by Manuel Garand. You place suspects on a grid using true witness clues, one suspect per row and column, and the person left sharing a room with the victim is the killer.
No. Murdoku is the brand behind Manuel Garand’s books and website, and Cluedoku is an independent game. They share a genre, but Cluedoku has its own cases, artwork, daily rhythm, campaign, and multiplayer modes, all built from scratch.
Yes. The official Murdoku site publishes free web cases, and Cluedoku offers a free murdoku-style case every single day, playable in the browser with no download, alongside a free hand-crafted campaign.
There is no official Murdoku mobile app as of summer 2026. Cluedoku, an independent detective sudoku in the same genre, is on Google Play now with the iOS version on the way, and both are built around a free daily case that works offline.
The genre is spelled murdoku, a blend of murder and sudoku. Mordoku is a common misspelling that floats around social media, and both searches point to the same kind of puzzle: a sudoku-style grid where the clues expose a killer.
Murdle is a daily deduction game built on category-matching logic grids and written testimony, with no spatial board. Murdoku-style puzzles are spatial: suspects physically occupy cells on a sudoku-like grid, so row and column logic does half the deductive work alongside the clues.