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Turning saving off removes stored game records. New records last only in this open page. Clearing removes game records; use Privacy choices for your analytics preference.
Play free. Seven questions a round. Keep going as long as you like.
Seven questions. Thirty seconds each.
Four options. More than one can be correct. Pick just one: a less obvious correct answer earns more points. Scores appear after you choose. Recall challenge lets you type an answer and keeps its own best score.
A question might ask for one of the original thirteen US states, an element, or a novel from a defined series. Several options can be correct. Pick just one and try to recognize a less obvious answer.
Seven questions across six topics. Mixed practice excludes your previous mixed round. Topic and daily rounds never repeat a question within a round.
Thirty seconds to submit one answer. Read the explanation at your own pace before moving on. There is no speed bonus.
Each checked answer earns 25, 50, 75, or 100 points. Scores are editorial tiers, not live player statistics.
Our launch collection contains 60 checked questions. Multiple choice has four shuffled options, with points hidden until you pick. For a harder recall test, choose Recall challenge and type an answer without seeing options. Each mode keeps its own best score.
Daily challenge and archive gives everyone the same seven questions each UTC day. Use topic practice to focus on a subject, or explore the question and answer library.
“Name one of the original thirteen US states.” Massachusetts and Delaware both fit. This game gives each checked answer a fixed editorial tier; facts come from sources, while rarity is an editorial judgment. Read the full question, accepted answers and source.
Yes. No account, payment or download is needed. There is no round limit; the current collection has 60 checked questions, so questions can return in later rounds.
Finish a round and choose Share score. The link recreates the exact questions, order, mode and multiple-choice options. It is an asynchronous challenge, with local scores rather than a live room.
No. This is independent practice with its own questions and editorial scoring. Our daily challenge and archive contain this site's sets. See About for the relationship.
Yes. Recall offers two steps; multiple choice can rule out one checked exclusion. Hints keep the timer running and mark the round as assisted. Your local records separate assisted and unassisted best scores.
How to play
Read the question, then pick one of four options. More than one option can be correct. A less obvious correct answer earns more points. No account is needed.
Multiple choice is the default. Four shuffled options include at least one familiar correct answer, one rare correct answer, and one checked answer that does not fit. Multiple options can be correct, but you submit only one. A wrong option earns zero.
Recall challenge lets you recall an answer without seeing options. Choose it before starting, type one answer in English, and press Enter or Submit answer. Common checked aliases are accepted; arbitrary spelling mistakes may not be. An empty input does not use your attempt.
The modes have separate best scores. Replay keeps your current mode; refreshing returns to the default Multiple choice mode.
Accepted answers earn one fixed editorial tier: 25 (Familiar), 50 (Less common), 75 (Uncommon), or 100 (Rare). Seven 100-point answers make a perfect 700. There is no speed bonus.
For example, two correct options can earn 25 and 100 points. You earn the score of the one you pick. Scores are editorial tiers, not live player statistics. The source lists support the facts, not the rarity ranking.
The timer continues when you switch tabs, open the rules, or open an end-round confirmation. If you return after the deadline, only the current question times out; the next question waits for you.
Refreshing, leaving the page, or ending the round discards unfinished progress. A new question always starts with thirty seconds after you choose Next.
Unlimited mixed practice draws across all six subjects and excludes the previous mixed round. Topic practice selects seven unique questions from ten in the chosen subject, so adjacent topic rounds can overlap. Daily gives everyone the same seven questions and multiple-choice options on a given UTC day. Our archive begins at this site's launch; these are independent practice sets.
Recall offers an initial-letter clue, then a masked answer. Multiple choice can rule out one checked exclusion without revealing scores. Hints do not restart the timer. Using a hint marks the completed round as assisted and keeps its best score separate from unassisted play.
Only a completed round can update that mode’s best score. Multiple choice and Recall challenge are not compared with each other. Records belong to this browser, not an online account. You can turn off saving or clear records in On-device records.
Mixed rounds have one question from each category and an extra question from one category. Completed rounds and up to 50 recent results appear in My records. A daily completed on its own UTC day counts once toward your streak. Historical replays do not backfill it.
Share your mode, total, accepted count, hint status and seven result squares, plus a link to replay the exact question order and options. Your typed answers are not included. This is asynchronous practice, without live rooms or verified competitive scores. If your browser cannot share or copy, select the score text manually.
Question policy
Every question defines the collection it is asking about. Its answer list, aliases, explanations, and exclusions are checked against published sources before release.
A country question names its country list or geographic definition. A sports question fixes an event or year. A book question identifies the series and edition differences where relevant. These conditions appear beside the question.
We favor finite lists over vague categories. “Name a famous scientist” has no clear edge; “Name one of NASA’s original Mercury Seven astronauts” does.
We use institutional lists, standards, official historical records, and specialist reference material where available. Source links are available with each question’s feedback. Question wording and explanations are written for this game; source links support the facts.
Each list is checked for its stated scope, not just filled with a few plausible examples. Classification or naming changes can still require corrections. We keep a dated source audit with the project.
Matching ignores capitalization, repeated spaces, supported quote and hyphen variants, and full-width English characters. Other spelling changes must be listed as checked aliases for that question.
These text checks apply to Recall challenge. In Multiple choice you click a checked label directly, so spelling is not part of the test.
We do not use an online model, fuzzy guesses, or automatic removal of every accent and punctuation mark. For example, a shorter abbreviation is accepted only when it is recorded for that particular question.
Every four-option set includes a 25-point and a 100-point correct answer, plus one or two verified exclusions from that question. If there is one exclusion, a middle-tier correct answer fills the fourth position. Options are shuffled once for the round and stay fixed while you decide. More than one can be correct; you submit only one.
Points stay hidden until you submit. Guessing from options differs from recalling an answer, so Multiple choice and Recall challenge keep separate best scores.
Scores are editorial tiers, not live player statistics. Familiar, Less common, Uncommon, and Rare earn 25, 50, 75, and 100 points. Editors use familiarity within the question as a judgment; source lists do not measure how many players know an answer.
Every question has a 25-point and a 100-point answer. There is no speed bonus. Changes to scoring rules use a new rules version so on-device best scores are not compared across different rules.
If your input matches neither an accepted answer nor a checked exclusion, you see Not in our list. It earns 0 points in this round, but is not marked factually wrong. An actual exclusion has a specific reason.
If you think we missed a valid answer, send the question ID, the proposed answer, and a reliable source through the contact page. Corrections can update later versions; completed local scores are not recalculated.
The game’s answer data is downloaded to your browser. It is not secret, and browser scores can be modified. This is a casual learning game with no prizes or trusted competitive leaderboard.
Browse all checked questions → · Play Krillion Unlimited Practice →
About
Krillion Unlimited Practice is a free independent trivia game for practicing less obvious correct answers. Open the homepage and play a seven-question round.
Each round crosses six subjects and gives you seven short questions. Pick one of four options in Multiple choice, or type an answer in Recall challenge. The explanation is part of the game: if you miss an answer, you can see the collection it belongs to and follow a source.
You can play without an account, payment, or download. The questions and scoring run in your browser. Your best score stays on your device. Our first collection has 60 questions, so later rounds may revisit earlier ones.
Krillion Unlimited Practice is not affiliated with, endorsed by, or an official version of Krillion. It has its own question wording, answer checks, interface, and editorial scoring. It does not provide another game's official daily answers.
Try unlimited mixed rounds, a daily set shared by all visitors, or one of six topics. Hints keep assisted records separate. Sharing recreates the same seven questions and options for a friend. Your completed rounds and daily streak stay in this browser.
We keep a source audit and review reported ambiguity, missing aliases, and factual errors. We prefer a small collection with clear scopes over a promise of endless automatically generated questions.
See our question policy or contact us about a question.
Privacy
Effective November 3, 2026
Krillion Unlimited Practice runs the game in your browser. We do not have player accounts, a database of submitted answers, or a public leaderboard.
Browser local storage can hold your completed round count, up to 50 recent results, best scores by mode and hint use, UTC daily completion dates, the previous mixed round's IDs, saving preference, and analytics choice. An activity marker in session storage identifies a round ended by refresh. We do not persist answer text.
| Storage key | Purpose |
|---|---|
rs:v1:best-choice | Multiple choice best score and completion date for the current rules |
rs:v1:best-input | Separate Recall challenge best score and completion date |
rs:v1:records-2 | Completed count, recent results, separate best scores and daily dates for rules version 2; no typed answers |
rs:v1:previous-round | Avoid immediately repeating the previous seven questions |
rs:v1:preferences | Remember-on-device preference |
rs:v1:consent | Optional analytics choice, renewed after 180 days |
rs:v1:active | Session-only round marker |
Game records remain until replaced, cleared, or invalidated by a version change. Legacy input scores under rs:v1:best are not compared with the new rules and can be removed with Clear on-device records. Turn off saving or clear records using On-device records on the game page. If storage is unavailable, you can still play using temporary memory.
We use Google Analytics 4 only after you accept optional analytics. Until you accept, we do not load its script or send measurements.
Measurements can include the page path, round starts and completions, total score, accepted-answer counts, replay, and successful sharing method. They do not include your submitted answers, email, or private URL query values. Google may receive network and device information and set analytics cookies when enabled.
Use Privacy choices below to reject or withdraw. Withdrawal disables future measurements and attempts to clear accessible analytics cookies without reloading the page or ending your round. A script already loaded stays in memory with measurement disabled. Withdrawal cannot retrieve already sent data. See Google’s privacy policy.
Advertising is currently disabled. No AdSense scripts or advertising cookies are loaded. Any later advertising integration will update this notice and provide the consent flow required for the service and visitor’s region.
A challenge link includes seven question IDs, mode, bank version and a seed that recreates the options. Shared score text includes your total and whether hints were used. Your submitted answer text is not included. Anyone with the link can replay the set; scores are casual local results.
Krillion Unlimited Practice is hosted on Cloudflare Workers with Static Assets. Hosting providers process network requests and may retain operational logs under their policies. Cloudflare’s privacy policy describes its processing.
If you email a question report, the receiving mailbox processes your message. Include only the information needed to explain the issue; do not send passwords or other sensitive personal data. See contact information.
Contact
Missing aliases and unclear boundaries are worth correcting. A useful report helps us reproduce the issue and verify the fact.
Email support@playrareseven.com.
Do not include passwords, payment information, private account identifiers, or other sensitive data. We cannot recover scores from a cleared browser or a different device.
Read the question and scoring policy for how unlisted answers are handled.
One shared set each UTC day. Our own seven questions, free to play.
Seven questions. Thirty seconds each.
Four options. More than one can be correct. Pick just one: a less obvious correct answer earns more points. Scores appear after you choose. Recall challenge lets you type an answer and keeps its own best score.
Replay this site's sets from launch on November 2, 2026 UTC (November 3 in Beijing). Every daily set has the same question order and options for everyone. These are independent practice sets.
Daily completion on the same UTC day counts toward your local streak once. Historical replays do not backfill it. A round started before midnight stays on its original date.
Practice by subject
A focused round draws seven of a subject's ten checked questions. Choose multiple choice or recall. Read the explanation and sources after each answer.
Name a UN member state whose listed English name starts with A. These ten questions each define a specific collection to name an answer from.
10 checked questions · 7 per round · 30 seconds each
Name a chemical element with a one-letter symbol. These ten questions each define a specific collection to name an answer from.
10 checked questions · 7 per round · 30 seconds each
Name an IUCN Red List category. These ten questions each define a specific collection to name an answer from.
10 checked questions · 7 per round · 30 seconds each
Name one of Jane Austen's six completed major novels. These ten questions each define a specific collection to name an answer from.
10 checked questions · 7 per round · 30 seconds each
Name a type of standard chess piece. These ten questions each define a specific collection to name an answer from.
10 checked questions · 7 per round · 30 seconds each
Name one of the first eight US presidents. These ten questions each define a specific collection to name an answer from.
10 checked questions · 7 per round · 30 seconds each
Each round has unique questions. Adjacent topic rounds can overlap because the collection is finite. Try mixed unlimited practice for a balanced round across all six subjects.
Checked practice collection
Search 60 practice questions. Open an answer when you want to learn it; answers start folded so you can keep practicing.
60 questions
No questions match. Try a shorter search or choose All topics.
Use the United Nations member-state list checked in November 2026. Enter a country name.
Use the United Nations member-state list checked in November 2026. Enter a country name.
The region follows UN M49. Territories that are not UN member states do not count.
Use the UN LLDC list checked in November 2026, restricted to countries in Africa.
Use the UN statistical definition, which includes Mexico. Enter one country.
Use the M49 statistical grouping, not a broader political or everyday definition.
Enter the modern state name. The Constitution's initial allocation of representatives lists the thirteen.
Count ocean coastline, not just an inland tidal river. Exclude Gulf-only coasts; Florida counts.
Provinces only: Yukon, Nunavut, and the Northwest Territories are territories.
Enter one of the eight countries. The European Union is also a party but is not a country.
Enter its English name or its one-letter symbol, as shown in the checked periodic table.
Use the modern periodic table. Oganesson counts by its group position, regardless of its predicted properties.
The endpoints are included. English element names or checked symbols are accepted.
Enter the English unit name, not a symbol or a measured quantity. Metre and meter both count.
Use the current eight-planet classification. Dwarf planets and moons do not count.
Use the standard 88-constellation list. Enter the Latin name, not a translated nickname.
Use group 1 of the periodic table, excluding hydrogen.
Use the recognized prefix list checked in 2026. Enter the full prefix name, not its symbol.
Combine the RGB additive and CMY subtractive models. Use a full English color name.
Use the general name for each side count, not a specific shape such as a square or rectangle.
Use the nine categories in version 3.1, including Data Deficient and Not Evaluated. Names or checked abbreviations count.
Name a bone type in one standard adult wrist, not a forearm bone.
Use the six extant genera in the checked classification. Enter the genus, not a species name.
Use the eight extant Ursidae species. Common English names are accepted.
Use the seven extant marine turtle species. Common English names count.
Use the standard seven main ranks. Do not include domain or intermediate ranks such as subclass.
Use the standard nine dietary essential amino acids, excluding conditionally essential ones.
Count units designated National Park, including parks that cross state boundaries. Use the list checked in 2026.
Use the structural classification in the checked anatomy text. A movement such as flexion is not a joint type.
The standard set has four rectus and two oblique muscles. The eyelid-lifting muscle is excluded.
Include the two published after her death. Exclude unfinished fiction and juvenilia.
Enter an English book title. Publication order and story chronology do not change the accepted set.
English titles count with or without 'Harry Potter and'. The first book's UK and US names both count.
Use the genre grouping on the checked Folger Shakespeare Library works page; its Romances group is separate.
Use the eight cultural sites in the first inscription year. Natural sites are excluded.
Enter one of the seven letters A–G. Do not enter a sharp, flat, or solfège syllable.
Enter a number from his nine completed numbered symphonies. Numbers and 'Symphony No.' forms count.
Include both endpoint years. Enter a person's name; the 1904 prize had two laureates.
Use the conventional classical nine-Muse group. Checked English transliterations count.
Enter its subtitle or full film title. Episodes I–IX count; standalone films and TV series do not.
Use the six piece types in ordinary chess, counting pawns as pieces for this question.
Use the principal host city of each Summer edition. Tokyo 2020 was held in 2021 but counts as the 2020 edition.
Historical cutoff: include the 2022 tournament, ignore later results. England counts as its own football team.
Specify a distance where needed. 'Hurdles' alone is accepted for the decathlon's 110-metre hurdles.
Use the seven-event outdoor format, not the men's indoor heptathlon.
Use a standard position name or its conventional fielding number. Designated hitter is excluded.
Count all distinct colors: the red balls, six other object-ball colors, and white cue ball.
Enter metres, not a relay total or an open-water distance. Use the actual 2024 program.
Use the team names from that season. The NBA recognizes BAA seasons in its history.
Enter one number. A blank end counts as zero; do not total both ends.
Enter a person's name. Distinguish John Adams from John Quincy Adams.
The twelve moonwalkers from Apollo 11, 12, 14, 15, 16, and 17. Merely orbiting the Moon does not count.
Enter the mission number or 'Apollo' plus the number. Successful crewed landings only.
Use the traditional ancient list, not modern 'new wonders' lists. A standard short name counts.
Use the UN's 51 founding-member list. Historical member entities count; modern successors are aliases only where explicitly listed.
Use the six founding states. Germany includes the Federal Republic of Germany at the time.
Use the twelve states that signed the original North Atlantic Treaty.
Include Enterprise, the atmospheric test orbiter. Mockups such as Pathfinder do not count.
Use the first year's individual laureates across the five original prize categories.
Use the seven selected in 1959. Checked nicknames and unambiguous surnames count.