Clue & Cluedo: The Board Game That Defined "Whodunit"
Was it Colonel Mustard, in the library, with the candlestick? For most people born after 1950, Clue — known as Cluedo outside North America — is where they first encountered the idea of a murder mystery as a game. It remains one of the best-selling board games in history.
Invented in the Dark, Literally
Anthony E. Pratt, an English factory worker and part-time pianist from Birmingham, developed the game during World War II, reportedly inspired by the "murder" parlor games he played with friends while sheltering from air raids. With his wife Elva, Pratt patented the concept in 1944 under the name Murder!, designing a mansion floor plan, a cast of suspicious guests, and a set of household weapons that could all be mixed and matched into a solvable mystery.
From "Murder!" to Cluedo and Clue (1949)
British publisher Waddingtons acquired and refined the design, releasing it in the UK in 1949 as Cluedo — a portmanteau of "clue" and "ludo" (Latin for "I play"). The same year, Parker Brothers licensed it for the US market as Clue, dropping the "-do" for American audiences. Both versions kept the same bones: nine rooms, six suspects, six weapons, and a hidden solution sealed in an envelope at the start of the game.
How the Game Works
Each player takes the role of a suspect — Miss Scarlett, Colonel Mustard, Mrs. White (later Dr. Orchid), Reverend/Mr. Green, Mrs. Peacock, and Professor Plum — and moves around a mansion floor plan, entering rooms to make accusations: a suspect, a weapon, and a room. Other players must privately reveal a card that disproves the guess, if they hold one, letting you eliminate possibilities by process of elimination. The first player to correctly name the real murderer, weapon and room — matching the sealed solution envelope — wins.
It's essentially Twenty Questions turned into a board game with physical deduction and a race element, which is exactly why it translated the parlor-game tradition (see our parlor games history) into something that could be mass-produced and sold in a box.
Cultural Impact
Cluedo/Clue has sold hundreds of millions of copies worldwide, spawned countless themed editions (from Harry Potter to The Simpsons to Star Wars), a 1985 cult-classic film with three alternate endings, video games, a stage play, and an entire vocabulary that entered everyday English — "it was Colonel Mustard in the library" is shorthand for an obvious or absurd conclusion in cultures that grew up with the game. Cluedo effectively trained multiple generations in the basic grammar of a murder mystery: suspects, motives, weapons, locations, and a logical process of elimination.
Cluedo's Legacy in Modern Murder Mystery Games
Every printed murder mystery party kit sold today — with its cast of suspicious characters, hidden motives and a killer known to only one guest — owes something to Cluedo's format, even though modern dinner-party mysteries replace the board with live improvisation and a full evening of conversation. If Cluedo is where most people learned the vocabulary of "whodunit," a scripted dinner party mystery is where that vocabulary becomes a live performance.
Loved Cluedo? You'll Love a Live Mystery Even More
Cluedo hands you a board. A murder mystery party from Murder Mystery Host hands you a character, a motive, and a room full of suspects who are all real people you know.