One in a Krillion
Updated September 27, 2026
Quick answer
"One in a krillion" is a pun on the everyday phrase "one in a million." Krillion isn't a real number — it's a made-up word that blends krill, the tiny shrimp-like animal at the bottom of the ocean food chain, with million. In the daily puzzle game Krillion, it's also the name of the highest scoring tier: an answer worth 100 points, the rarest result the game gives out.
What does "one in a krillion" mean?
Outside the game, the phrase means the same thing "one in a million" means: something extremely rare, or a person who stands out from everybody else. The swap from million to krillion does two things at once — it exaggerates the rarity ("even rarer than one in a million") and it plants the word krill in your ear, which is the whole theme of the game.
Because it's a deliberate misspelling of a very common expression, it's usually written exactly as the game spells it: one in a krillion, with a k. On its own, "krillion" almost always refers either to the game or to a brand name — it isn't a unit or a number you'll find in a dictionary.
Where the phrase comes from
The trick is a simple sound swap. Take "one in a million," replace the m with kr, and you land on a word that sounds like a real quantity but isn't one. Krill are the small crustaceans that swarms of whales, penguins and fish feed on — they live deep in cold water and exist in enormous numbers, which is exactly the feeling a daily puzzle game about a diver going deeper wants to evoke.
"One in a Krillion" in the game: the 100-point tier
In Krillion, every answer is scored by how rare it is inside the game's official answer set rather than by whether it's "correct" in the ordinary sense. Answers land in one of six tiers, and One in a Krillion is the top one:
| Tier | Points | What it means |
|---|---|---|
| Plankton | 10 | The most obvious answer. Everyone else gave it too. |
| Too Clever | 15 | Technically fine, but a stretch — the game nudges you back. |
| Schooler | 30 | A common but not thoughtless answer. |
| Rare | 60 | Unusual, and still inside the official list. |
| Deep Cut | 85 | Genuinely obscure — most players won't think of it. |
| One in a Krillion | 100 | The rarest possible answer for that prompt. |
Each point equals 10 metres of depth, so a perfect run of seven 100-point answers scores 700 points and takes your diver to 7,000 metres. The tiers are the reason the game feels different from a normal quiz: the goal is never the cleverest answer, it's an answer that is unusual and still obvious enough to appear on the official list.
How to land a One in a Krillion answer
- Play the small pools. Prompts with fewer accepted answers are where rare answers sit closest to the surface. When a prompt has thousands of accepted answers, almost everything you think of is already common.
- Go specific, not clever. "Card" has 527 accepted answers, and the 100-point answer on that prompt was something as specific as an aperture card. Rare usually means a real, named thing — not a joke.
- Skip the first thing you think of. Your first instinct is the same instinct everybody else has, which is exactly why it scores as Plankton.
- Stay inside the list. The most common way to score zero is to give a perfectly reasonable answer the game doesn't accept. Reasonable and accepted aren't the same thing.
- Use the 25 seconds. You get 25 seconds per prompt and one Daily Dive a day. Rushing gives you the common answer; the extra few seconds are for digging one layer deeper.
Questions people ask
Is "krillion" a real number?
No. It isn't in dictionaries as a quantity and it has no fixed value. It only works because it sounds like "million."
Is "one in a krillion" spelled with a K?
Yes — that's the whole joke, and it's the spelling both the phrase and the game's top tier use.
Do you need a One in a Krillion answer to finish the game?
No. You finish every run regardless of tier. The tier only affects your score and how deep your diver ends up.