How to Play Clumps

By Jaques of London · Est. 1795 · Updated 2026-08-17

Clumps is a large-group parlour guessing game in which players use yes/no questions to deduce a secret word, name, or phrase chosen by the opposing side. It rewards logical thinking and clear communication, and it scales comfortably from a dozen players to a roomful of thirty.

It is a reliable choice for family gatherings, Christmas parties, and school events because it needs no equipment whatsoever, suits a wide age range, and keeps every player active throughout. Rounds move quickly, the noise level is cheerfully high, and even younger players grasp the basic mechanic within minutes.

A little history

The precise origins of Clumps are unclear. It belongs to the broad family of yes/no deduction parlour games that were popular in Victorian and Edwardian drawing rooms across Britain, and it is frequently listed in mid-twentieth-century British party-game collections. The name refers to the clusters of players who huddle together to confer before posing each question. Beyond that general tradition, no single inventor or documented first appearance has been reliably recorded.

Setting up

1. Divide all players into two roughly equal teams. Call them Team A and Team B.
2. Team A leaves the room, or moves out of earshot, while Team B agrees on a secret word, name, or phrase. Suitable choices include famous people, animals, objects, book or film titles, and occupations.
3. Once Team B has agreed on the secret word, all players return to the same space.
4. If scoring across multiple rounds, appoint one neutral scorer to count and record the number of questions asked each round.

How to play

1. Team A, the guessing team, huddles together briefly (up to 30 seconds) and agrees on a yes/no question to ask Team B.
2. A spokesperson from Team A puts the question aloud to all of Team B.
3. Every member of Team B answers simultaneously and independently: those whose answer is YES move to one side of the room, those whose answer is NO move to the other side. Players who genuinely cannot answer, because the question is ambiguous relative to the secret word, should agree a house rule in advance: the most common ruling is that they join the larger group.
4. Team A looks at the two resulting clumps, chooses which clump is more likely to be helpful, and sends its own members to stand with that clump.
5. Team A now huddles only with the players in their chosen clump and formulates their next yes/no question, aiming to narrow down the possibilities further.
6. This process repeats: question, split, choose a clump, huddle, next question.
7. At any point before asking a question, Team A may instead attempt a direct guess at the secret word. They announce this to the room and state their guess.
8. If the guess is correct, the round ends. Record the total number of questions asked (not counting the final guess itself, by convention, though teams should agree this before play).
9. If the guess is wrong, play continues with the next question.
10. Teams then swap roles: Team B leaves the room, Team A sets a new secret word, and the process begins again.

Winning and scoring

The team that correctly identifies the secret word using the fewest questions wins that round. Play as many rounds as you like, giving each team an equal number of turns as the guessing side. The team with the lower total question count across all rounds wins overall. In the event of a tie, play one sudden-death round: the team that guesses in fewer questions wins; if the counts match exactly, the round is replayed.

The fine points

The most common dispute concerns ambiguous answers. If the secret word is DOLPHIN and Team A asks 'Is it a land animal?', the answer is technically NO, but a player who forgets that dolphins are mammals might answer differently. The standard ruling is that Team B members answer based on the factually correct answer, not their gut reaction, and if a member of Team B answers incorrectly, that answer stands for that round but does not invalidate the question. It is worth agreeing before play begins whether Team B members must answer honestly even if doing so makes the word very easy to guess; the answer is yes, they must.

A second common edge case is questions that cannot be answered yes or no cleanly, such as 'Is it sort of big?'. The question-asker should be required to rephrase rather than forcing Team B to make an arbitrary split. Appoint a neutral adjudicator if the group is competitive. Also agree in advance on what counts as a valid secret word: proper nouns, fictional characters, and compound phrases are all fine, but they should be things that most players in the room could reasonably be expected to know.

How to win more often

• Open with broad categorical questions: animate or inanimate, real or fictional, person or thing. These split Team B roughly in half and give you maximum information per question.
• Watch which clump is larger before you choose. Larger clumps contain more of Team B's knowledge, so they usually give you a richer huddle for your next question.
• Assign one person in your team to track the questions already asked. Repeating a question wastes a turn and is surprisingly easy to do when the group is excited.
• Resist guessing early. A premature wrong guess costs you nothing under most rule sets, but it does signal to Team B exactly where your thinking is, and some rule variants penalise wrong guesses by adding bonus questions to your count.
• When you are down to a small clump and your options are narrowing, switch from category questions to specific elimination questions: 'Would most people in this room have heard of it?' or 'Does it exist in the UK?' can rule out large swathes of possibilities quickly.

Variations

Timed Clumps

Instead of counting questions, set a fixed time limit per round, typically three minutes. The guessing team scores a point for each correct guess they make within the time. This version suits larger, noisier gatherings where keeping a precise question count is impractical.

Solo Clumps

One individual player acts as the guesser rather than a whole team. That player moves between clumps alone and formulates all questions without conferring. This is a useful variant when player numbers are uneven or when you want to give one confident player a particular challenge. All other rules remain the same.

Category Clumps

Before each round, the setting team must choose their secret word from a pre-agreed category, such as animals, capital cities, or film titles from a specific decade. This is a good option for mixed-age groups because it keeps the difficulty manageable and prevents the setting team from choosing obscure words to frustrate the guessers.

Penalty Guess Clumps

Any wrong direct guess adds three questions to the guessing team's total score for that round. This variant discourages early speculative guessing and rewards teams that work methodically through the clumps rather than leaping to conclusions. Announce this rule clearly before play begins so all players can factor it into their strategy.

Clumps: frequently asked questions