CULLPRIT - Deduction Puzzles

Content rating
Everyone 10+
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Content rating
Everyone 10+
Mild Violence
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About this game

A murder, a grid, and one person who cannot be telling the truth.

Cullprit is three deduction games in one, each with a fresh case every day. You do not read clues and tick boxes — you solve a puzzle to earn the evidence, then work out who did it. The deduction is yours. The app never crosses anyone off for you.

THREE GAMES, THREE WAYS TO CATCH SOMEONE

BONEYARD — Northmere House
Lay dominoes across the rooms so every room's rule holds. Five accounts of the evening, and only one that cannot be true: the person whose bone never left a single room.

SCENES — The Grand Hotel
Place everyone on the floor plan from the clues, one to a row and one to a column, then work out who was carrying what. Whoever holds the murder weapon did it.

TRACKS — Follow the line
Draw a single railway line that matches every row and column count. The line passes over letters, the letters spell a word, and the word clears suspects until one is left standing.

THREE DAILY CASES, ALWAYS FREE
One from each game, the same for everybody, with its own streak. Share how you did without giving the answer away.

A HUNDRED CASES TO WORK THROUGH
Forty Boneyard cases, forty Scenes and twenty Tracks — the casebooks, with a message hidden across each season and a final culprit waiting at the end of the line.

PLAYS ANYWHERE
Every puzzle is inside the app, so it all works with no connection at all. No adverts. No account. Nothing to sign up to.

BUILT FROM THE BOOKS
Cullprit began in print, and every case here was checked by the same solver the game uses. Each has exactly one answer, and there is always enough to find it — no guessing, and never two suspects who both fit.

Solve the puzzle. Name the culprit.
Three deduction puzzles a day. Solve the puzzle, then name the culprit.
Updated on
Sep 21, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
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  • No data collected
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What’s new

Dashboard updates
Content rating
Everyone 10+
Mild Violence
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App support

About the developer
DENELLA LTD
contactus@denellapublishing.com
134 Saxelby Road Asfordby MELTON MOWBRAY LE14 3DF United Kingdom
+44 7883 443683