Recall, then change direction
Enter one answer at a time. After a familiar answer, try another region, period or subgroup. Three different matches end the prompt early; you can also finish a prompt to see its reference list.
Original exercise by Quest Field Guide
Category Recall Lab
Krillion practice with a different challenge: find three distinct answers per category. Stretch your recall across seven prompts, then learn from the reference sets.
Build a seven-prompt round
First answer: 10 points. Second: 15. Third: 20. Maximum 315 per round. These are practice points for breadth, not rarity or an official Krillion score.
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How this practice works
Explicit matching
Case, spacing, accents and punctuation are normalized. Listed spelling variants are accepted, but there is no fuzzy autocorrect. Two aliases for one answer earn points once. Use full names unless a prompt says otherwise.
A limited reference set
“Not in this practice set” is not a claim that your answer is wrong in the world or in Krillion. This lab checks its own published lists, not the official game’s database. Report omissions through Corrections & contact.
Question bank, answers and sources
18 independently written prompts. Each round mixes topics and avoids closely related categories. Open the references to study without a timer, including when JavaScript is unavailable.
Name planets in our solar system
Use planet names, not moons or dwarf planets.
Reference set: Mercury · Venus · Earth · Mars · Jupiter · Saturn · Uranus · Neptune
Work outward from the Sun instead of stopping at the first planet you remember.
Name terrestrial planets in our solar system
The four inner, rocky planets; exclude the giant planets.
Reference set: Mercury · Venus · Earth · Mars
Picture the planets inside the asteroid belt.
Name officially recognized dwarf planets
The five recognized dwarf planets listed by NASA; exclude candidates.
Reference set: Ceres · Pluto · Haumea · Makemake · Eris
Remember that one is in the asteroid belt, not beyond Neptune.
Name Galilean moons of Jupiter
Use the names of Jupiter’s four Galilean moons.
Reference set: Io · Europa · Ganymede · Callisto
Think of the four large moons, rather than all of Jupiter’s smaller satellites.
Name Apollo missions that landed people on the Moon
Enter a mission name or number, such as Apollo 11. Lunar orbits and the aborted Apollo 13 landing do not count.
Reference set: Apollo 11 · Apollo 12 · Apollo 14 · Apollo 15 · Apollo 16 · Apollo 17
Also accepted: Apollo 11: 11; Apollo 12: 12; Apollo 14: 14; Apollo 15: 15; Apollo 16: 16; Apollo 17: 17.
After the first two landings, remember the gap before the next successful landing.
Name US states starting with M
Use full English state names; abbreviations are not used in this drill.
Reference set: Maine · Maryland · Massachusetts · Michigan · Minnesota · Mississippi · Missouri · Montana
Try the Atlantic coast, the Great Lakes and the interior separately.
Name US states starting with N
Full English state names, including names starting with New or North.
Reference set: Nebraska · Nevada · New Hampshire · New Jersey · New Mexico · New York · North Carolina · North Dakota
Search the two-word names before moving to the single-word names.
Name US states starting with A
Use full English state names, not cities or abbreviations.
Reference set: Alabama · Alaska · Arizona · Arkansas
Two are in the South; two are in the West.
Name New England states
Use the six states in the US Census Bureau’s New England division.
Reference set: Connecticut · Maine · Massachusetts · New Hampshire · Rhode Island · Vermont
New York is in the Middle Atlantic division, so move farther northeast.
Name states in the US Census Pacific division
Use Census division membership, not only the contiguous Pacific coastline.
Reference set: Alaska · California · Hawaii · Oregon · Washington
Include the two noncontiguous states in this division.
Name SI base units
Enter unit names, not symbols or derived units. US spelling meter is accepted.
Reference set: second · metre · kilogram · ampere · kelvin · mole · candela
Also accepted: metre: meter; ampere: amp.
Think of the quantities: time, length, mass, current, temperature, amount and light intensity.
Name SI prefixes for factors greater than one
Prefix names only, such as kilo; not symbols or complete units.
Reference set: deca · hecto · kilo · mega · giga · tera · peta · exa · zetta · yotta · ronna · quetta
Also accepted: deca: deka.
Move from tens and hundreds toward powers of a thousand.
Name SI prefixes for factors less than one
Prefix names only, such as milli; not symbols or complete units.
Reference set: deci · centi · milli · micro · nano · pico · femto · atto · zepto · yocto · ronto · quecto
Start just below one, then move to smaller powers of ten.
Name elements with atomic numbers 1–10
Enter element names, not symbols.
Reference set: Hydrogen · Helium · Lithium · Beryllium · Boron · Carbon · Nitrogen · Oxygen · Fluorine · Neon
Run across the first two rows of the periodic table.
Name elements with atomic numbers 11–20
Element names only; aluminium/aluminum and sulfur/sulphur are both accepted.
Reference set: Sodium · Magnesium · Aluminium · Silicon · Phosphorus · Sulfur · Chlorine · Argon · Potassium · Calcium
Also accepted: Aluminium: aluminum; Sulfur: sulphur.
Start at sodium, cross the third period and continue through calcium.
Name Group 18 elements
Use element names from the rightmost column of IUPAC’s periodic table, including element 118.
Reference set: Helium · Neon · Argon · Krypton · Xenon · Radon · Oganesson
Move down the column instead of staying with the gases you hear about most often.
Name Jane Austen’s six completed novels
Use English titles; unfinished works and adaptations are excluded.
Reference set: Sense and Sensibility · Pride and Prejudice · Mansfield Park · Emma · Northanger Abbey · Persuasion
Also accepted: Sense and Sensibility: sense & sensibility; Pride and Prejudice: pride & prejudice.
Pair the two better-known titles, then think of places, a person and persuasion.
Name Shakespeare tragedies
This practice set uses the 11 titles in Folger’s Tragedies section; use English play titles.
Reference set: Antony and Cleopatra · Coriolanus · Hamlet · Julius Caesar · King Lear · Macbeth · Othello · Romeo and Juliet · Timon of Athens · Titus Andronicus · Troilus and Cressida
Also accepted: Antony and Cleopatra: antony & cleopatra; Romeo and Juliet: romeo & juliet; Troilus and Cressida: troilus & cressida.
Move between the Roman plays, family tragedies and lovers’ stories.
Take the skill into a Daily Dive
For the official timer, submission flow and answer recognition, read how to play Krillion. Our rarity tiers guide explains why this lab’s breadth points cannot predict an official score. Ready to see worked examples? Open the recorded answer archive, which contains spoilers for those dives.