Somebody here did it. Find out who.
Sudunnit is a murder mystery you solve like a sudoku. Six suspects, one lakeside cabin, one very awkward weekend. Read the clues, seat everyone and point at the guilty one.
Got a minute? Someone's been murdered.
Four people, three rooms, one liar. It's quicker than making coffee.
Seat everyone. Then point the finger.
Tap a suspect, then tap the spot where their story fits.
Who killed Daniel?
What everyone swears happened
Found in the sauna, right by the left wall. Poor Daniel.
I was in the kitchen, in the top row. Making pulla, obviously.
I was curled up in the armchair with a good book.
I was in the bottom row. That's all I'm saying.
Pack a bag, detective.
Midsummer bonfires, mulled wine at the Christmas market, an island ferry and a hotel full of secrets. Every chapter is a little trip with its own music and a big final case.
See all 15 chapters →
Midsummer
The sun never sets. Neither do alibis.
Archipelago
A ferry, a jetty, a lie.
Christmas Market
Mulled wine and alibis.
Hotel Aurora
Forty rooms, one guest list.
Café Quarter
Coffee, cake and a confession.
What is a murder mystery sudoku?
Sudunnit mixes the logic of sudoku with a detective story. Every case is a floor plan: rooms, furniture and a handful of suspects. Each row and each column holds exactly one person, and every suspect tells you where they were. Once everyone is seated, the murderer is the one who was alone with the victim.
It's a deduction game and a brain workout in one: no guessing, no timer, no ads. Perfect if you like sudoku, crosswords, logic puzzles or a good whodunit.
Cozy, not creepy.
A murder mystery you can happily play before bed. No blood, no gore. Just clever clues, charming suspects and a jazzy soundtrack that makes you feel like a proper detective.
A partner, not a spoiler
Stuck? A hint nudges you toward the next clue without ruining the fun.
No lucky guesses
Every case has one answer, and you can always think your way there. That's the fun part.
Suomeksi or in English
Play in either language. The suspects lie equally well in both.
No ads. Seriously.
Not between cases, not ever. Just you, a cup of something warm and the evidence.
You have questions. We have answers.
Is Sudunnit really free?
Yes. Every case can be played without paying a cent, and there are no ads. Extra hints and the Detective Pass are there if you want them, but nobody is twisting your arm.
I'm not a sudoku person. Will I get it?
Absolutely. Your first three cases come with a friendly coach who shows you the ropes. By case four you'll be the one giving advice.
Is it scary?
Not at all. Nobody is ever shown hurt. Think cozy whodunit with a cup of cocoa, not a crime scene.
Can I play at the summer cottage?
Yes, no internet needed. Your progress catches up when you're back in range.
What if I get a new phone?
Sign in and your cases, stars and coins come along. The suspects will be waiting.
How do I delete my account or data?
In the app, go to Settings and Account. On the web, use sudunnit.com/en/account/delete or sudunnit.com/en/account/delete-data.
The suspects won't seat themselves.
Free, ad-free and ready in a minute, on iPhone and Android. Download now. The murderer is counting on you not to.
On a computer? Point your phone here and start investigating.
