1. Name a type of number
The rarest answer starts with “I” (17 letters, 2 words). Only 4 answers on this prompt score Deep Cut or better — think past the obvious.
Answer archive
Krillion answers — Tuesday, December 22, 2026
One day of Krillion Infinite, preserved in full.
These are the 7 prompts from the Krillion Infinite daily dive for Tuesday, December 22, 2026, with every accepted answer published by rarity tier — from the Plankton answer everyone gave, down to the One in a Krillion answer worth 100 points. Already played? Compare your dive honestly. Not played yet? If this page is today's date, close it and play first — spoilers are real down here.
Hints — a nudge before the answers
Want to almost find it yourself first? Each hint describes that prompt's rarest answer — its first letter, its length, and how much company it has in the deep tiers — without naming it. The full answers are right below, past the point of no return.
2. Name a currency that is not paper
The rarest answer starts with “K” (11 letters, 2 words). Only 4 answers on this prompt score Deep Cut or better — think past the obvious.
3. Name a famous music festival
The rarest answer starts with “S” (6 letters). Only 4 answers on this prompt score Deep Cut or better — think past the obvious.
4. Name a famous trumpeter
The rarest answer starts with “C” (10 letters, 2 words). Only 4 answers on this prompt score Deep Cut or better — think past the obvious.
5. Name a famous spy
The rarest answer starts with “V” (13 letters, 2 words). Only 4 answers on this prompt score Deep Cut or better — think past the obvious.
6. Name a branch of biology
The rarest answer starts with “M” (8 letters). Only 4 answers on this prompt score Deep Cut or better — think past the obvious.
7. Name a thing that glows
The rarest answer starts with “W” (20 letters, 3 words). Only 5 answers on this prompt score Deep Cut or better — think past the obvious.
The full answers
Name a type of number
🫧 Plankton (10 pts): Even number, Whole number
🤡 Too Clever (15 pts): Negative number, Odd number
🐟 Schooler (30 pts): Decimal, Integer
🦑 Rare (60 pts): Rational number, Fraction
🏮 Deep Cut (85 pts): Imaginary number, Prime number
🌟 One in a Krillion (100 pts): Irrational number, Complex number
Name a currency that is not paper
🫧 Plankton (10 pts): Coin, Bitcoin
🤡 Too Clever (15 pts): Credit card, Gold
🐟 Schooler (30 pts): Euro coin, Cowrie shells, Salt
🦑 Rare (60 pts): Livestock, Rai stones
🏮 Deep Cut (85 pts): Salt blocks, Rai limestone
🌟 One in a Krillion (100 pts): Kina shells, Katanga crosses
Name a famous music festival
🫧 Plankton (10 pts): Woodstock, Tomorrowland
🤡 Too Clever (15 pts): Coachella, Burning Man
🐟 Schooler (30 pts): Glastonbury, Austin City Limits
🦑 Rare (60 pts): Lollapalooza, Bonnaroo
🏮 Deep Cut (85 pts): Roskilde, Primavera Sound
🌟 One in a Krillion (100 pts): Sziget, Fuji Rock
Name a famous trumpeter
🫧 Plankton (10 pts): Louis Armstrong, Miles Davis
🤡 Too Clever (15 pts): Chris Botti, Doc Severinsen
🐟 Schooler (30 pts): Herb Alpert, Maynard Ferguson
🦑 Rare (60 pts): Arturo Sandoval, Wynton Marsalis
🏮 Deep Cut (85 pts): Dizzy Gillespie, Freddie Hubbard
🌟 One in a Krillion (100 pts): Chet Baker, Clifford Brown
Name a famous spy
🫧 Plankton (10 pts): Ethel Rosenberg, Aldrich Ames
🤡 Too Clever (15 pts): Mata Hari, Julius Rosenberg
🐟 Schooler (30 pts): Harriet Tubman, Eli Cohen
🦑 Rare (60 pts): Nathan Hale, Josephine Baker
🏮 Deep Cut (85 pts): Richard Sorge, Kim Philby
🌟 One in a Krillion (100 pts): Virginia Hall, Sidney Reilly
Name a branch of biology
🫧 Plankton (10 pts): Zoology, Anatomy
🤡 Too Clever (15 pts): Genetics, Ecology
🐟 Schooler (30 pts): Microbiology, Botany
🦑 Rare (60 pts): Ornithology, Ichthyology
🏮 Deep Cut (85 pts): Entomology, Herpetology
🌟 One in a Krillion (100 pts): Mycology, Phycology
Name a thing that glows
🫧 Plankton (10 pts): Firefly, Glow stick, Light bulb, Sun
🤡 Too Clever (15 pts): Moon, Fire
🐟 Schooler (30 pts): Neon sign, Anglerfish, Glow-in-the-dark stars, Jellyfish
🦑 Rare (60 pts): Plankton, Aurora, Foxfire fungus
🏮 Deep Cut (85 pts): Radium dial watch, Cherenkov radiation, Scorpion under UV
🌟 One in a Krillion (100 pts): Welsbach gas mantles, Sonoluminescence