Case file No. 01
A deduction game · 16+
Somebody was alone with the victim. Find out who.
Every case is a floor plan, a handful of suspects and their statements. Cross out what can’t be true, place everyone where only they can stand – and the killer has nowhere left to hide.
- No ads
- No account
- No luck
- EN · PL · DE · FR
Agatha
HugoThe method
Three tools. One solution.
The rules fit on an index card. The cases do not.
Everyone stood on one square. Inside a room, no two people share a row or a column.
- 01
Read the statements
“Benjamin was beside a bush.” “Agatha was in the Basement.” Each suspect gives you one fact.
- 02
Cross out the impossible
Strike every square a statement rules out. Make notes when you are not sure yet.
- 03
Name the killer
When everyone is placed, one person was alone in a room with the victim. That is your killer.
Evidence
A look inside the file
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Exhibit AThe floor plan: rooms, objects, your crosses and notes. -
Exhibit BEveryone is placed. Who was alone with the victim? -
Exhibit CCase closed – with your time, hints and stars. -
Exhibit DThirty cases in every file, each with its own title.
The archive
120 cases in four case files
The boards grow from 5×5 to 8×8 and the reasoning gets deeper with every file. Every case has exactly one solution – checked by a solver, reachable by logic alone.
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Case file 01
FreeDifficulty
Learn the method: short statements, small manors.
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Case file 02
Difficulty
More suspects, more rooms, fewer easy crosses.
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Case file 03
Difficulty
Statements start to depend on each other.
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Case file 04
Difficulty
Expert cases for when nothing is obvious any more.
The daily case Free
A new case every day, free for everyone. Keep your streak going and beat your best time.
House rules
A fair game, played at your pace
Hints that teach
A hint explains the next deduction – it never just hands you the answer.
No rush
Stars reward speed, but the timer can be hidden. Progress saves itself.
No ads. None.
No banners, no videos, no “watch to get a hint”. Not now, not later.
Plays offline
All cases live on your phone. Solve one on the train or on a plane.
No account
Nothing to sign up for. Open the app and start the first case.
Four languages
English, Polish, German and French – switch any time in Settings.
The fee
Start free. Pay once, if you want more.
Purchases go through the App Store or Google Play and belong to that store account. To get them back on another device, tap “Restore purchases” at the bottom of the store screen.
Questions
Frequently asked
Is Alibi Files free?
Yes. Case file 1 with 30 cases and the daily case are free forever, with 3 hints a day. Case files 2–4 are optional one-time purchases – there are no ads and no subscription.
Can every case really be solved without guessing?
Yes. Every case has exactly one solution, and our solver checks that it can be reached step by step from the statements alone. If you are stuck, a hint shows the next deduction.
Do I need an internet connection?
No. All cases are on your device and play offline. The internet is only used for purchases and, unless you switch them off, anonymous statistics and crash reports.
Is it violent?
No. A crime has happened, but you never see it: the game is a logic puzzle on a floor plan, with illustrated portraits and short written statements. It is made for players aged 16 and over.
Found a case that doesn’t add up?
Tell us the case number (for example “File 2 · No. 14”) and what you saw. We read every message.