01 / Geography
Name a member of the European Union.
Hints & answers
Membership as of September 2026. Country names and common aliases count.
Free Daily Trivia Game
Answer six daily trivia questions. Earn fixed points for correct answers, then review the answers and sources.
6 questions · 20 seconds each · No account needed
Question library
Search 221 published questions by topic. Each has accepted answers, fixed scores and a factual source.
Independent practice with our own questions and scores. About this site →
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01 / Geography
02 / Science
Name one of the seven SI base units.
Hints & answers
Base units only. Unit names, plurals and symbols are accepted.
03 / Space
Name a planet farther from the Sun than Mars.
Hints & answers
Only the four outer planets. Dwarf planets do not count.
04 / Culture
Name one of Jane Austen’s six completed novels.
Hints & answers
Published novels only. Unfinished works and juvenilia do not count.
05 / Sports
Name a country with exactly one men’s FIFA World Cup title through 2022.
Hints & answers
Count only men’s tournaments from 1930 through 2022.
06 / Words
Name a NATO codeword with exactly six letters.
Hints & answers
Count letters in the official full NATO spelling. Enter the codeword, not its represented letter.
Answers stay hidden until you choose to reveal them. Viewing hints does not change your game score.
Player Statistics
Answer frequencies and question success rates from recorded daily games.
23,800 recorded daily rounds
– UTC
Explore the available question rankings and recorded answer choices below.
View player statisticsHardest daily questions
Lowest accepted-answer rates, from questions with at least 20 rounds.
Recorded answer choices
Choice frequency within each question’s recorded rounds.
Show answer frequencies
How these statistics work
- What is counted
- Source: Krillionio daily submissions. Skips and timeouts count as rounds; practice and Battle are excluded.
- When comparisons appear
- A question needs at least 20 recorded rounds. An answer also needs at least 5 recorded choices within that question.
- What the data can tell you
- These anonymous browser records are not verified unique people or a representative survey. The player rarity index does not change game points or predict the original Krillion game. Raw submissions stay private.
Question explanations
Featured lessons with worked examples, sources and a checker to test yourself.
Rocky Planets: Answers, Boundaries & Practice
Read explanation →
Elements 1–30: Symbols, Cutoffs & Faster Answers
Read explanation →
SI Base Units: Names, Symbols & Common Boundary Errors
Read explanation →
NATO Codewords: Tricky Spellings & Accepted Aliases
Read explanation →
EU Member Trivia: Membership, Aliases & Practice
Read explanation →
Jane Austen’s Six Novels: Full Titles & Better Recall
Read explanation →
Practice by subject
Choose a topic, or play another mixed dive.
Sports · The Deep Bench
NBA teams, tennis, Olympic hosts and football.
Play & exploreThe Lexicon
Codewords, Greek letters, grammar and writing systems.
Play & exploreAt the Movies
Film series, Oscar winners, directors and Bond actors.
Play & exploreGeography
World capitals, countries, waterways and landmarks.
Play & exploreScoring and answer rules
Understand the boundary, the timer and what the numbers mean.
Why Neptune Scores 92 When 36.2% of Rounds Choose It →
A fixed-window study of 895 recorded daily rounds: what a high practice score means, how choice share is calculated, and what the sample cannot tell us.
Fixed Scores and Player Rarity →
Separate a correct answer, its fixed knowledge points and its observed choice frequency before deciding what to practice.
How to Use the 20-Second Timer →
A practical routine for reading the boundary, recalling a backup and entering an answer before the clock runs out.
NATO Codewords: Spellings and Accepted Aliases →
Understand why an accepted input can have a different length from the official codeword it represents.
Geography Practice: Membership Rules and Aliases →
Train the difference between places, memberships and aliases using two contrasting questions at a time.
More ways to practice
Replay an edition, compare your progress or invite a friend.
How to play a Krillionio dive
01
Read the exact rule.
Each question has a bounded answer set. You have 20 seconds to name one answer that fits.
02
Choose an accepted answer.
Less obvious accepted answers earn more fixed knowledge points. Aliases share the same score.
03
Review your score.
Six answers, up to 6,000 metres. Review the sources and share a result without spoilers.
Frequently asked questions
The game, the scores, and this independent companion.
Is this the original Krillion game?
No. krillionio.com is an independent practice companion and is not affiliated with or endorsed by the original publisher. Our questions, scores and archive belong to this site. The original game is at krillion.io.
When does the daily dive reset?
A new six-question edition opens at midnight UTC. Past editions stay available in the archive, and Unlimited is free between resets.
Will the answer tools spoil my game?
Today’s guide begins with the questions and rules. Hints and answers are revealed only when you choose. Tools check our published library; they do not predict another game’s validator.
Are rarity scores based on player counts?
Knowledge scores are fixed editorial ratings. Daily crowd counts are shown separately with the number of submitted rounds; they never change your points.