The case cabinet
Six cozy places to get away with murder.
From a country manor to a snowbound lodge — every case is hand-built, with its own suspects, rooms and a single provable answer.
Snowbound at the Edelweiss
Midnight at Wrenfield Manor
Last Call on the Silver Comet
After Hours at the Ashgrove Museum
Gale Warning at the Kittiwake Light
How it works
Sudoku rules. Murder-mystery stakes.
- 1
Read the statements
Every suspect tells you where they were. Some clues pin down a room, others rule one out.
- 2
One per row, one per column
Just like sudoku, each row and column holds exactly one person. Place them until the floor plan fits.
- 3
Find who was alone with the victim
The killer is the only suspect sharing a room with the victim. No hunches — the logic proves it.
The usual suspects
Charming. Helpful. One of them did it.
Every case comes with a cast of characters — and a statement from each.
Beatrice Pemberton
The private secretary“For the record, I was in the armchair.”
Clement Thorne
The clockmaker“I was on the sofa. Ask any of the forty-one clocks.”
Dorian Vale
The stage conjuror“The dining room, darling. Where else would I be?”
Edgar Greenleaf
The head gardener“Kept to the left wall. Didn't want any fuss.”
Stuck? Never for long
Hints that nudge. Never spoil.
When the trail goes cold, UnMask walks you through the next deduction — so you learn the trick instead of just getting the answer.
Reasoning, step by step
Each hint explains the why in plain language, one stage at a time.
You stay in charge
Reveal the next stage only when you want it — or place the suspect yourself.
Pick up where you left off
Progress is saved, even halfway through a case, and syncs through iCloud.
One case file, every screen
Pocket-sized on iPhone. Spacious on iPad.
Solve a quick case on the train, then spread the big 9×9 boards out on iPad at home. Your progress follows you through iCloud.
- 800
- free cold cases
- 4
- difficulty levels
- iCloud
- sync on every device
New seasons, each with its own story
From a vanishing film star to a village of witches — chapter by chapter, case by case.
Guides for puzzle detectives
New to murder mystery puzzles? Start here.
Guide · 8 min readThe best murder mystery games for iPhone and iPad
unmaskgame.com/murder-mystery-games- Murder sudoku: the logic puzzle where the numbers are suspectsSudoku's one-per-row rule, with a killer hidden in the grid.unmaskgame.com/murder-sudoku
- Free murder mystery games you can actually solve800 cold cases, four levels, no ads and no account.unmaskgame.com/free-murder-mystery-games
- Games like Murdle you can play on your phoneDaily deduction fix? These scratch the same itch.unmaskgame.com/games-like-murdle
- Logic grid puzzles, explained with one caseLearn the row-and-column trick in five minutes.unmaskgame.com/logic-grid-puzzles
FAQ
Questions before you take the case?
Still curious? The Support page has the rest — or open the free tutorial case and see for yourself.
Is UnMask free to play?
Yes. Download UnMask for free and play 800 cold cases without paying anything. Story seasons are a one-time purchase — no subscription.
How is UnMask different from Murdle?
Murdle puzzles use a deduction grid of suspects, weapons and places. In UnMask you place the suspects on a floor plan, sudoku-style: one per row, one per column. The killer is the one who was alone with the victim.
Do I ever need to guess?
Never. Every case has exactly one solution that follows from the clues. If you get stuck, a hint explains the next deduction instead of giving the answer away.
Does UnMask work on iPad?
Yes. UnMask is made for iPhone and iPad, with roomier boards on iPad. Your progress syncs between your devices through iCloud.
Which languages does UnMask speak?
English, Dutch and German, with more languages on the way.
Can I play without an internet connection?
Yes. The cases live on your device, so you can solve them on a plane, in a tunnel or at the cottage.
Start with the free tutorial caseTonight's case is waiting, detective.
Pour a cup of tea, open the case file and see who really was in the armchair.
Download on the App Store