
- BGG rank
- BGG #608
- BGG rating
- 7.0
Hanabi
- 2–5 players
- 25 min
- Complexity 1.7/5
- 2010

1960
Rules assistance for Lie Detector
Plain-language explanations of turns, card effects and disputed situations, with official source references and saved question history.

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Answers come from the official rulebook, with the page to check.
Lie Detector is a board game released in 1960 for 2–4 players, 60 minutes per game, and ages 8 and up. Its main mechanics are Memory.
Lie Detector includes a small plastic non-electronic 'Lie Detector Machine', a plastic peg board for keeping score, and numerous 'Arrest', 'Summons', 'Secret Information', and 'Suspect' cards. Of the 24 suspects, one of them has committed a crime. The players have a number of turns to find the guilty party by interrogating suspects with the Lie Detector machine. To play Lie Detector, the Suspect cards are divided among the game players. One of the six square 'Guilty' cards is inserted into the back of the Lie Detector machine so that no one knows which suspect is the criminal; each 'Guilty' card has four suspects on it, with the guilty suspect being determined by the orientation in which the card is inserted. On their turn, each player questions a suspect by taking the suspect's card, placing it over the front of the Lie Detector and inserting the Lie Detector's wand through a hole in the card and into the Lie Detector itself. If the testimony is false, a bell rings and a needle on the machine points to "False". If it is true, no bell rings and the needle points to "True". (e.g. - The Racketeer says "the Suspect has a 'Big Jaw'... if it comes up 'True' you know that one of the six suspects with a big jaw committed the crime) Also included in the game are special 'Secret Information' cards. These cards have testimony that is known only to the player who own the cards. By process of elimination, the suspects are narrowed down, until a player feels confident that he can make a successful accusation and 'make an arrest'. He checks the guilty card in the machine. If he is right, he gets 5 points plus bonus points for the number of face-up suspects still showing on the table. Additional rounds are played until one player's score is 25 points of more. Mattel, Inc. re-issued this game as Spy Detector with different artwork, and it did not sell nearly as well.
Lie Detector supports 2–4 players according to the catalogue. This range comes from the publisher’s listed player count, so the game can be set up for any group size within it. Some setups, rules and scoring details may still vary by player count, so check your edition’s rulebook for the exact configuration.
The listed playing time for Lie Detector is 60 minutes. This is the publisher’s estimate for a full game. The actual duration depends on the group, the player count and familiarity with the rules: first sessions usually run longer, while experienced groups often finish faster. Setup and teaching time are not included in this estimate.
The catalogue lists Lie Detector for ages 8 and up. This is the publisher’s recommendation and reflects reading demands, rule complexity and small components rather than theme alone. Younger players can often join with help from an adult, so check the age guidance on your edition and consider your group’s experience with board games.
Lie Detector has a complexity rating of 1.3 out of 5 from BoardGameGeek players, which makes it a light game. The rating reflects how much rules knowledge, planning and decision-making a typical game demands. Expect a longer first teach for heavier games, and use a preparation guide before game night.
Lie Detector belongs to these categories: Deduction and Memory. Its main mechanics are Memory. Categories describe the theme and setting of a game, while mechanics describe what players actually do on their turns. Each mechanic links to a catalogue hub with similar games, which helps when you want something comparable.
The catalogue lists Lie Detector as a base game. It can be played on its own with the components in the box and does not require any other title. Expansions, if any exist, add new content or rules on top of it and are listed separately in the catalogue with a link back to this base game.