Name a member of the European Union.
Membership as of September 2026. Country names and common aliases count.
27 accepted answers · European Union · Member countriesKrillion Geography
Put your mental map to the test with countries and US states.
Geography question library
6 published questions. Open a question for hints, or compare its accepted answers.
Name a founding member of the European Economic Community.
One of the six countries that signed the Treaty of Rome in 1957.
6 accepted answers · European Union · Member countriesName a country that joined the EU in 2004.
The ten-country enlargement of 1 May 2004.
10 accepted answers · European Union · Member countriesName one of the 50 U.S. states.
State names or two-letter postal abbreviations. No territories.
50 accepted answers · U.S. Census Bureau · State codesName a U.S. state whose name begins with N.
Use the full state name or its postal abbreviation.
8 accepted answers · U.S. Census Bureau · State codesName a country that joined the EU in 1995.
The three-country enlargement of 1 January 1995.
3 accepted answers · European Union · Member countriesExplore Krillion Geography
Our geography practice covers EU member states, accession groups and US states. Read the boundary carefully: Europe is not interchangeable with the European Union, and a US territory is not a state.
Read the boundary. Then find the unusual answer.
A clear category is the best starting point. Review the prompt library for the exact rule, use the checker for spellings, and read the answer explanations to understand why each entry qualifies.
Before your next dive.
How does rare-answer trivia work?
Read a question and type one answer that fits. Less obvious accepted answers earn more knowledge points, taking you deeper into the ocean. A dive has six questions with 20 seconds for each answer.
Can I play Krillion Unlimited for free here?
Yes. Unlimited practice is free and does not require an account. Finish a dive and choose Dive Again to start a new session. The mixed library has 36 prompts across six categories; the movie pack adds six more. Questions can repeat.
What can I play in Deep Bench?
The sports practice dive has six questions about men’s FIFA World Cup champions from 1930 through 2022. Read the date range on each prompt, then choose a qualifying country that is less likely to be your first thought.
What does the answer checker verify?
It matches your answer against the selected question’s answer list, including recognized alternate names and spellings. A match shows the canonical name, fixed score and a factual explanation. You can report an answer that is missing.
How does the Rare Answer Finder choose its picks?
It compares only listed answers for the chosen question. Highest score shows the most points; quickest to type uses the shortest accepted name or alias. Balanced pick chooses the shortest spelling among answers worth at least 65 points when available. These are fixed ratings, not predictions of other players.
What can I play in At the Movies?
Six questions cover Pixar feature films released from 1995 through 2009. Read each release-year or title rule. The movie question library includes accepted film titles, alternate spellings and explanations.
How do scores and crowd counts work?
Knowledge points are fixed editorial ratings, with 10 metres per point and up to 6,000 metres per dive. Daily crowd counts come from actual answers submitted on this website. Those counts show how many people chose your answer and do not change your knowledge score.
When does the daily dive reset?
A new daily dive opens at midnight UTC. Everyone receives the same six prompts for that UTC date. You can keep playing in Unlimited between resets, or replay a previous day from the archive.
Can I play with friends?
Create a Battle room and share the room link with 1–7 friends. Everyone answers the same question privately. Matching answers cancel each other out, including matching answers written with different recognized spellings.
Can I make the game bigger?
Use Expand above the game to fill the browser window, or Full screen for an immersive view. Your current question, answer draft and progress stay in place. Press Escape or use the close button to return.