Death by Deduction is a unique blend of logic puzzle and classic murder mystery set in an old English manor during the 1970s. Explore the manor, examine evidence, and question suspects to deduce who the murderer is in "Death by Deduction".
We are not affiliated with IsThereAnyDeal.






Welcome to "Death by Deduction", a unique combination of logic puzzle (similar to Minesweeper) and classic country-house whodunit, set amidst the opulent backdrop of 1970s England. In the wake of the enigmatic demise of an eccentric millionaire, your investigative journey leads you to a solemn gathering at a sprawling English manor. Explore the manor and uncover pieces of evidence by meticulously uncovering its hidden clues. When all of the evidence has been gathered, you'll have the chance to arrest the murderer and solve the case. Interrogate suspects, examine evidence, and deduce who the murderer is before you become the next victim in this deadly game of cat and mouse. Get ready to challenge your intellect and unravel the mystery that shrouds "Death by Deduction."
Explore the manor and uncover clues to reveal pieces of evidence. Increasing difficulty settings grant access to more areas of the manor that need to be thoroughly searched as you hunt for the murderer.
Examine evidence that you find during your investigation. Every piece of evidence is surrounded by clues that must be revealed before you can uncover it. Evidence includes dead bodies, murder weapons, plot/story pieces, and red herrings.
Questioning suspects gives you some information about them and reveals elements of the current plot/story. Suspects include traditional murder mystery characters like the reverend, the professor, and the retired army major.
When all pieces of evidence have been collected, you'll have the chance to arrest the murderer and conclude your investigation.
Steam data © 2025 Valve Corporation. Steam and the Steam logo are trademarks and/or registered trademarks of Valve Corporation in the U.S. and/or other countries. Independent of Valve. Pricing and availability subject to change.






Welcome to "Death by Deduction", a unique combination of logic puzzle (similar to Minesweeper) and classic country-house whodunit, set amidst the opulent backdrop of 1970s England. In the wake of the enigmatic demise of an eccentric millionaire, your investigative journey leads you to a solemn gathering at a sprawling English manor. Explore the manor and uncover pieces of evidence by meticulously uncovering its hidden clues. When all of the evidence has been gathered, you'll have the chance to arrest the murderer and solve the case. Interrogate suspects, examine evidence, and deduce who the murderer is before you become the next victim in this deadly game of cat and mouse. Get ready to challenge your intellect and unravel the mystery that shrouds "Death by Deduction."
Explore the manor and uncover clues to reveal pieces of evidence. Increasing difficulty settings grant access to more areas of the manor that need to be thoroughly searched as you hunt for the murderer.
Examine evidence that you find during your investigation. Every piece of evidence is surrounded by clues that must be revealed before you can uncover it. Evidence includes dead bodies, murder weapons, plot/story pieces, and red herrings.
Questioning suspects gives you some information about them and reveals elements of the current plot/story. Suspects include traditional murder mystery characters like the reverend, the professor, and the retired army major.
When all pieces of evidence have been collected, you'll have the chance to arrest the murderer and conclude your investigation.
Death by Deduction is a unique blend of logic puzzle and classic murder mystery set in an old English manor during the 1970s. Explore the manor, examine evidence, and question suspects to deduce who the murderer is in "Death by Deduction".
We are not affiliated with IsThereAnyDeal.
Steam data © 2025 Valve Corporation. Steam and the Steam logo are trademarks and/or registered trademarks of Valve Corporation in the U.S. and/or other countries. Independent of Valve. Pricing and availability subject to change.