A deduction game is a tabletop game in which you find a hidden answer by ruling out possibilities from clues. In Clue you deduce the three cards in the envelope, in Sherlock Holmes Consulting Detective you follow leads in a case book, and in MicroMacro: Crime City you search an illustrated map. Hidden-role games like Werewolf are a separate genre.
Deduction game — A tabletop game in which the answer, such as a culprit, a code or a set of hidden cards, is fixed from the start and players reach it by ruling out possibilities from the clues the game hands them, so a correct solution can be proved from the evidence rather than guessed.
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Deduction games in one paragraph
Every deduction game hides one answer and gives you a way to narrow it down. In Clue, the answer is three cards sealed in an envelope. In Mastermind, it is a row of four colored pegs behind a screen. In Sherlock Holmes Consulting Detective, it is the solution printed at the back of a case booklet. The game never changes that answer while you play, and every clue it hands out is true. Your job is to rule out what cannot be right until a single option is left, and to be able to say which clues prove it.
That last point is what separates a deduction game from a guessing game or a trivia game. If you reason correctly from the clues, you will always reach the answer. The skill the game asks for is bookkeeping and patience: tracking what you know, what you have ruled out and where the next useful clue might come from.
The four families of deduction games
Deduction games share that core, but they hand out clues in very different ways. Most titles fall into one of four families.
| Family | Well-known examples | Where the clues come from | Players | Competitive or co-op |
|---|---|---|---|---|
| Elimination and grid games | Clue, Mastermind, Murdle: The Board Game | Cards shown by other players, feedback pegs, printed statements | 2 to 6 | Usually competitive |
| Narrative case games | Sherlock Holmes Consulting Detective, Chronicles of Crime | Paragraphs you read when you visit a location, newspapers, a map | 1 to 8 | Usually cooperative |
| Illustrated search games | MicroMacro: Crime City | A large drawing you scan for details | 1 to 4 | Cooperative |
| Logic puzzles | Murdle books, logic grid puzzles | A fixed list of statements on the page | 1 | Solo |
Elimination and grid games: Clue and its relatives
The classic deduction game is Cluedo, sold as Clue in North America. It was devised in 1943 by Anthony E. Pratt and first manufactured by Waddingtons in 1949. The classic edition has six characters, six weapons and nine rooms, which gives 324 possible solutions. One card of each type goes into an envelope, the rest are dealt out, and on your turn you make a suggestion: a suspect, the room you are in and a weapon. The player to your left must privately show you one matching card if they hold one, and so on around the table. You mark what you see on the Detective’s Notes pad, a printed grid of every suspect, room and weapon.
The current US edition, Clue Reimagined at Tudor Mansion, keeps that engine for 2 to 6 players aged 8 and up, and adds Clue cards that can force an opponent to reveal a card. The skill is the same as in 1949: notice not only what you are shown, but also who could not disprove a suggestion, because that tells you which cards they lack.
Mastermind, invented by Mordecai Meirowitz in 1970, strips the idea down to pure logic. One player sets a hidden code of four colored pegs; the other guesses and receives feedback pegs for right color in the right place and right color in the wrong place. In 1976 Donald Knuth showed that a systematic method always cracks the code in five guesses or fewer. Wikipedia files Mastermind, Black Box and Code 777 under “abstract” deduction games, with no theme at all, and Clue under “investigation” games, where you play a detective.
Narrative case games: Sherlock Holmes Consulting Detective
Narrative case games put the clues inside a story. Sherlock Holmes: Consulting Detective, first released by Sleuth Publications in 1982 and winner of the 1985 Spiel des Jahres, is the model for the family. Each case booklet opens with a short introduction. You then decide where to go in Victorian London: look up a name in the London Directory, find the address on the map, and read the paragraph for that address in the booklet. A newspaper printed for the day of the case may hold the clue that sends you to the right street.
When you think you know the answer, you stop and answer the questions at the back. You score points for each correct answer and lose points for each location you visited beyond what Holmes needed, so the game rewards reasoning before reading. The current English edition by Space Cowboys, starting with The Thames Murders & Other Cases, is listed for 1 to 8 players aged 14 and up, about 90 minutes per case. Our guide on which Sherlock Holmes Consulting Detective box to buy compares the four boxes.
Chronicles of Crime by Lucky Duck Games belongs to the same family with a twist: a free smartphone app replaces the case booklet, and you scan cards to question characters and examine locations.
Illustrated search games: MicroMacro: Crime City
MicroMacro: Crime City, designed by Johannes Sich and published by Edition Spielwiese in 2020, swaps text for a drawing. You unfold a black-and-white map of a city, about 45 by 30 inches, packed with tiny scenes. Each case is a small deck of 5 to 12 cards that ask questions, and the answers are hidden somewhere in the drawing: a character seen leaving a building, the same character three streets later, a dropped object. The base game holds 16 cases for 1 to 4 players, and it won the 2021 Spiel des Jahres. Standalone sequels followed, including Full House, All In and MicroMacro: Crime City Showdown, whose 16 new cases include one rated above the top of the usual difficulty scale.
Here the deduction is visual. You follow a character backward in time across the map, and you test each answer by finding the drawing that confirms it. It is the easiest family to teach, since everyone can point at the map.
Logic puzzles: Murdle and grid mysteries
The fourth family has no board at all. A logic grid puzzle gives you a list of statements, such as “the person in the library was not holding the candlestick”, and a grid of every combination. You fill the grid with yes and no marks until each row has one answer. G. T. Karber started Murdle in 2022 as a web-based daily mystery modeled on logic grid puzzles, and the first book topped the UK book charts at Christmas 2023. Murdle: The Board Game turns the same grids into a short competitive game for 2 to 4 players.
Murder mystery jigsaw puzzles sit at the edge of this family: you assemble the picture, then use it with a short story to name the culprit. Our list of the best murder mystery puzzles covers that format.
How a deduction game plays out
The details vary by family, but a session follows the same arc.
- Learn what is hidden. Find out exactly what the answer is made of: three cards in Clue, a four-peg code in Mastermind, a set of questions in Consulting Detective, the question on the first card in MicroMacro.
- List every possibility. Clue gives you the grid on its notes pad. In a narrative game, list the suspects, places and open questions on a sheet yourself.
- Gather clues. Make a suggestion, read a lead, scan the map or read a statement. Each clue removes some options or confirms one.
- Record the source. Write down where each fact came from. Many arguments at the table are settled by asking “which card or paragraph told us that?”
- Eliminate. Cross out every option that the clues rule out, including options ruled out indirectly, such as a card a player could not show.
- Commit. Accuse, answer the questions or check the solution card. In competitive games a wrong accusation usually knocks you out, so you commit only when one option remains.
For practical techniques at each step, from keeping a deduction grid to testing competing theories, see how to think like a detective.
Deduction game vs. social deduction game
The names are close, and a search for “deduction game” often returns both, but they are different genres.
In a social deduction game such as Mafia, also known as Werewolf, players attempt to uncover each other’s hidden role or team allegiance. Some players are secretly on the other side and will lie to stay hidden. The clues are what people say and how they vote, and none of them can be trusted. Winning depends on persuasion and bluffing as much as on logic.
In a deduction game as covered on this site, the clues come from the game itself and are always true. Clue players must show a card when they hold one. A Consulting Detective paragraph never lies about what a witness said, even if the witness was lying. That is why careful elimination always reaches the answer.
Clue sits close to the line, since players compete and hide cards, but no one is allowed to lie about the cards they hold. Hidden-role games, where lying is the core of the game, are outside the scope of this site, and we do not recommend them in our comparisons.
Deduction game vs. escape room game
An escape room game, such as an EXIT or Unlock box, is built from a chain of puzzles: a code opens a lock, which reveals the next riddle, against a clock. Each puzzle has its own answer, and you rarely need to remember the first one by the end.
A deduction game asks one question for the whole session and makes you hold every clue in view until the end. Time pressure is rare; Consulting Detective penalizes extra leads rather than minutes. Some boxed mysteries mix the two, adding ciphers and locked envelopes to a case file. If puzzles and locks are what your group enjoys, the Escape Rooms at Home topic covers those games.
Who deduction games suit
- Families with children: Clue (ages 8 and up on the current edition) and MicroMacro: Crime City (ages 8 and up for the base game) are the usual entry points. Read the case cards first with younger players, since every case is about a crime.
- Two players or solo: Mastermind, Murdle books and MicroMacro work with one or two people.
- A group that likes reading: narrative case games such as Consulting Detective suit two to four players who enjoy discussing each lead.
- Competitive groups: Clue and Murdle: The Board Game reward the fastest reasoner at the table.
To compare complete games side by side, see the best detective board games and, for something shorter, the best mystery card games. Everything on the subject is gathered in the Detective and Deduction Games topic.
Key facts
- Classic Cluedo (Clue in North America) has six characters, six weapons and nine rooms, which leaves 324 possible solutions; one card of each type is sealed in an envelope and players track the rest on a Detective's Notes pad.Wikipedia, Cluedo, 2026
- Sherlock Holmes: Consulting Detective, a deduction game for 1 to 6 players first released by Sleuth Publications in 1982, awards points for each correct answer and takes points away for each location visited; it won the 1985 Spiel des Jahres.Wikipedia, Sherlock Holmes: Consulting Detective (gamebook), 2026
- MicroMacro: Crime City, designed by Johannes Sich and published by Edition Spielwiese in 2020, is played on a map of about 45 by 30 inches, holds 16 cases for 1 to 4 players, and won the 2021 Spiel des Jahres.Wikipedia, MicroMacro: Crime City, 2026
- In Mastermind, invented by Mordecai Meirowitz in 1970, a codebreaker deduces a hidden pattern of four colored pegs from feedback pegs; Donald Knuth showed in 1976 that the code can always be solved in five guesses or fewer.Wikipedia, Mastermind (board game), 2026
- Social deduction games are defined as games in which players attempt to uncover each other's hidden role or team allegiance, as in Mafia, also known as Werewolf, which dates from 1986.Wikipedia, Social deduction game, 2026
FAQ
What is an example of a deduction game?
Clue is the best-known example: you work out the suspect, room and weapon cards hidden in an envelope. Sherlock Holmes Consulting Detective, MicroMacro: Crime City, Mastermind and the Murdle logic-grid mysteries are other well-known deduction games, each built on a different way of handing out clues.
Is Clue a deduction game?
Yes. Clue is a competitive deduction game. Three cards are sealed in an envelope, players make suggestions that others must disprove by showing a card, and each player crosses off options on the Detective's Notes pad until only one suspect, one room and one weapon remain.
What is the difference between a deduction game and a social deduction game?
In a deduction game the answer is fixed by the game and every clue is reliable, so careful elimination always works. In a social deduction game such as Werewolf, the answer is which players are lying about their hidden roles, so persuasion and bluffing matter as much as logic.
Can you play a deduction game alone?
Many deduction games work solo. Sherlock Holmes Consulting Detective, MicroMacro: Crime City and Murdle puzzle books all support one player. Competitive games such as Clue need at least two or three people, because the clues come from the cards other players hold.
Is an escape room a deduction game?
Not quite. An escape room game is a chain of locks and puzzles you open one after another under a time limit. A deduction game asks a single question, such as who did it, and you answer it by eliminating possibilities. Some boxed games mix both.
Sources
- Wikipedia: Deduction board game
- Wikipedia: Cluedo
- Wikipedia: Sherlock Holmes: Consulting Detective (gamebook)
- Wikipedia: MicroMacro: Crime City
- Wikipedia: Mastermind (board game)
- Wikipedia: Social deduction game
- Wikipedia: Murdle
- Space Cowboys: Sherlock Holmes Consulting Detective, The Thames Murders & Other Cases