The rare-answer trivia dive · Free forever

Answer rarer. Dive deeper.

Krillion Unlimited is the endless Krillion game — 7 open prompts per dive, 25 seconds each. Every point sinks you 10 metres; a perfect dive hits 700 points and 7,000 metres. No signup, no daily cap.

Scores save in your browser · Challenge links work everywhere

Sunlight Zone
Prompt 1 of 7
0 pts
25s
category
…

Dive Complete

0points
The game in numbers

Small numbers. Absurd depths.

6
Rarity tiers
Plankton → One in a Krillion
100
Points, max per answer
One perfect guess, one kilometre
7,000 m
A perfect dive
700 points × 10 metres
How to play

Three steps to your first dive

1

Read the prompt. Seven open prompts per dive — no multiple choice, no lifelines, just your memory.

Categories span food, film, science, sports, history and more.
2

Type the rarest correct answer you can think of. You have 25 seconds, and the clock is the only enemy.

Wrong guesses cost nothing — a reach is always worth trying.
3

One answer per prompt — the first accepted answer scores. Once an answer lands, the round ends and the full answer bank is revealed.

Spend your 25 seconds thinking past the obvious.
Scoring

Every point sinks you 10 metres

One answer, six tiers. Watch what happens to a single prompt — “Name a type of cheese” — as the answer gets rarer. The ladder below is taken straight from this game’s question bank: real prompts, real tiers, real answers.

TierPointsDepthExample answer
Plankton440 mCheddar
Too Clever880 mManchego
Schooler16160 mGouda
Rare32320 mRoquefort
Deep Cut64640 mEpoisses
One in a Krillion1001,000 mCasu marzu

Same question, same 25 seconds. Cheddar sinks you 40 metres; Casu marzu drops you a full kilometre — 960 metres apart on identical knowledge.

Strategy guide

How to think like a deep diver

Krillion doesn’t reward knowing more — it rewards knowing differently. Four habits separate the deep divers from the plankton:

01The Too Clever trap

The most dangerous answer is the one that feels original. “Moonlight” for Best Picture feels like a connoisseur’s pick — but it’s the second thought of every clever player, which is exactly why it sits in Too Clever (8 points) instead of Rare. Same with Pluto for planets: every smart person “discovers” Pluto. Psychologists call this a Schelling point — the answer people independently converge on when they’re all trying to be unpredictable. If your “obscure” answer arrived in under three seconds, it’s probably everyone else’s too.

02Say it, then bin it

Start by saying the obvious answer out loud — Cheddar — and cross it off. Then cross off the second thing that pops into your head — Manchego. The points live after that: your third idea is where the crowd thins out, and your fifth is where the real depth begins.

03Change the angle

When a category feels crowded, slice it differently: another country, another century, the smallest, the oldest, or the most marginal member. Don’t answer Mars (Plankton) when the dwarf planets are sitting right there — Eris is a One in a Krillion.

04Stay inside the prompt

Wrong guesses cost nothing, so reaching is always free — but only answers on the list score. Obscure pays only when it’s unambiguously correct. A confident, correct Roquefort beats a speculative nothing every single time.

The backstory

Where “krillion” comes from

The word comes from the phrase “one in a krillion” — a line from the 2011 animated film Happy Feet Two, spoken by Will the Krill, a tiny crustacean with outsized ambitions. “Krillion” isn’t a real number; it’s an indefinite hyperbolic numeral, a cousin of “zillion” and “gazillion” — a word for a quantity too big to bother counting. And “krill” itself is Norwegian for the sea’s small fry: the tiniest creatures, schooling in the billions. It’s a perfect name for a game about finding the one answer almost nobody else reaches.

The game underneath the word is older. People have been counting answers for over half a century:

  1. 1969

    Battig & Montague publish category norms. Psychologists literally counted how many people gave each answer to prompts like “name a type of cheese” — the first answer-frequency database.

  2. 1976

    Family Feud turns counting into a game show. New rule: guess what the survey said — the most popular answer wins.

  3. 1988

    Scattergories adds a twist. A good answer only scores if nobody else at the table wrote it down.

  4. 2009

    The BBC’s Pointless inverts the genre. The fewer people who gave your answer, the better it scores.

  5. Today

    Krillion takes that idea daily — and this version removes the daily cap, so the dive never has to end.

The map

Your 7,000 metres, mapped to the real ocean

A perfect dive here is 700 points — 7,000 metres straight down, past most of the real ocean. The zones you pass on the way down follow the real layers of the sea:

FAQ

Krillion Unlimited FAQ

What is Krillion Unlimited?

Krillion Unlimited is a free, endless version of the viral daily trivia game Krillion. Every dive gives you 7 open-ended prompts with 25 seconds to answer each — and there is no daily cap, so you can play as many dives as you want.

How is rarity scoring calculated?

Every accepted answer lands in one of six rarity tiers: Plankton (4 pts), Too Clever (8 pts), Schooler (16 pts), Rare (32 pts), Deep Cut (64 pts), or One in a Krillion (100 pts). You get one answer per prompt — the first accepted answer ends the round. Every point sinks you 10 metres, so a perfect 700-point dive reaches 7,000 metres. Wrong guesses cost nothing, so a reach is always worth trying.

How are the rarity tiers decided?

Honestly: right now the tiers are editorial estimates based on common knowledge — we don’t have real player data yet, and we say so openly. As real players play, tiers will be recalibrated from actual answer frequencies: answers everyone gives become Plankton, answers almost nobody reaches become One in a Krillion. The “Too Clever” tier exists for the trap answer that feels original but is actually what every clever player thinks of.

Is Krillion Unlimited free?

Yes — completely free, no signup, no account, no paywall. Your best scores are saved in your own browser.

How is this different from the daily Krillion game?

The official daily game gives everyone one shared set of 7 prompts per day. Krillion Unlimited adds an endless mode with fresh random prompts every dive, plus a Daily Dive mode that mirrors the shared-daily format so you can compare with friends.

Do I need to register to play?

No. Open the page and dive. Scores are stored locally in your browser via localStorage.

What is a “One in a Krillion” answer?

It’s the single rarest valid answer to a prompt — worth 100 points, a full kilometre of depth. Each question has exactly one: for “Name a type of cheese” it’s Casu marzu, the Sardinian cheese most players have only heard rumors of. These are the answers almost nobody reaches, and they’re the whole game.

Can I challenge a friend?

Yes. Every dive has a number, and the Copy Dive Card button gives you a challenge link. Anyone who opens it gets the exact same 7 prompts — same number, same questions. Beat my depth, if you can.

What happens when the timer runs out?

You score 0 for that prompt — no penalty beyond the missed points. The full answer bank is then revealed, grouped by tier from rarest to most obvious, so you can see exactly what you missed.

Is this the official Krillion game?

No. Krillion Unlimited is a fan-made endless version, built by a fan — not affiliated with or endorsed by the official Krillion game at krillion.io. Think of it as the unofficial deep end.