Read the prompt.
"Name a planet." You have 30 seconds, and the boundary line tells you which planets count. Every answer in the bank is verified before it ever reaches a round.
The weirdest correct answer wins.
Outlier Duel is a free daily trivia duel in the spirit of Krillion. Every day deals five open prompts — you have 30 seconds to lock in each one — and the rarest correct answer takes the round. No signup, no app, no warm-up lap: the game on this page is today's real set, scored on our server, not in your browser. Play it, then send the same five prompts to a friend and find out who thinks less like everybody else. It takes about three minutes.
Krillion is a product of its respective owners; Outlier Duel is not affiliated with or endorsed by it.
LOADING YOUR FIVE…
Talking to the game server. Rounds are timed by the server clock, not your device.
Outlier Duel is a free browser trivia game built around one uncomfortable idea: the obvious answer is worth almost nothing. There are no four-option multiple-choice screens here. Instead you type one correct answer to an open prompt — name a planet, name a chess piece, name a country starting with K — and your score depends on how unlikely that answer is to be said first.
That flips the usual trivia reflex. Knowing the answer is only half the job; the other half is reaching past the first name that surfaces and finding a correct one that still fits the prompt's boundary. Every prompt ships with a precise boundary line, a fully enumerated answer set and a per-answer rationale, so "rare" never means "random" and "unrecognized" never means "wrong". It is a small, repeatable ritual for people who like being right in an unexpected way.
Each duel is exactly five prompts. A round opens with the prompt and a boundary line telling you what counts and what does not; you type one answer, hit lock in, and the server decides. Rounds run 30 seconds, timed by the server clock rather than your device, so refreshing the page never buys extra time and a slow connection cannot cost you a round.
Scoring is rarity-first. Every accepted answer in our reviewed bank carries an editorial rarity value of 20, 40, 60, 80 or 100 points. Twenty is the answer everybody says first; one hundred is the deep cut almost nobody reaches for. Five rounds add up to 500 points, and the whole duel takes about three minutes.
The daily set is frozen once per UTC day, so every player worldwide faces the same five prompts. Nothing is generated on the fly and nothing is personalised to your history. When round five closes you get a total and a challenge link: anyone who opens it plays your exact five prompts, and their answers stay hidden until they have locked in their own.
"Name a planet." You have 30 seconds, and the boundary line tells you which planets count. Every answer in the bank is verified before it ever reaches a round.
Mars is right. But Neptune is rarer, and the server knows the difference: 20 points for the pick everyone makes, up to 100 for the one almost nobody does.
See your server-verified total, then hand the same five prompts to a friend. Their answers unlock yours round by round — only after they have committed to their own.
Krillion made this format click for a lot of people: seven prompts a day, twenty-five seconds each, one dive, no second chances. Outlier Duel is an independent take on the same idea, and the differences are deliberate.
Same spirit, different game. If you want the official daily dive, play it at krillion.io. If you want a shorter set and someone to beat, you are in the right place — and there is a fuller, honest side-by-side — plus the other games in this genre worth your tab — in our guide to games like Krillion.
Finish a duel and challenge a friend with one tap. They play your exact five prompts, and every answer unlocks side-by-side — but only after they have locked in their own.
The daily duel is one frozen set per UTC day — play it once and you are done until tomorrow. Unlimited mode removes that ceiling: every tap of the play button deals a fresh five-prompt duel from the same reviewed bank, scored by the same server rules, as many times as you like.
Use it to warm up before the daily, to test a hunch about which answers the bank rewards, or to settle a grudge after a friend duel. Nothing you do there touches the daily scoreboard, so a bad round costs you nothing. It is also the fastest way to train the only reflex that matters here: skipping the first answer that comes to mind.
Our current bank spans space, geography, science, language, history and everyday knowledge — 30 reviewed questions, each with a complete, sourced answer set. New categories launch only when their full answer sets are reviewed.
Off-the-planet answers
Unexpected places
Think beyond the obvious
Every round is different
Yes — Outlier Duel is completely free. Every daily duel, the unlimited practice mode, and friend challenges are all available at no cost, with no signup required. Just open the site, play today's five prompts, and share your challenge link. There are no paywalls, no ads interrupting a round, and nothing locked behind an account.
It is, in spirit. Krillion is a daily rare-answer trivia game where the least common correct answer scores highest — and Outlier Duel follows the same core idea. The differences: Outlier Duel gives you five prompts instead of seven, and adds a head-to-head twist — after you lock in your answers, you can challenge a friend to beat your picks. If you like Krillion's daily ritual but want someone to beat, this is built for you.
Rarity is the whole game. For each prompt, every player types one correct answer — and the rarer that answer is, the more points it earns. The obvious answer everyone thinks of is worth the least, 20 points; the weird-but-correct deep cut can top the round at 100. Those values are editorial weights assigned at review time against a fully enumerated answer set, not a live count of other players' picks. All answers are verified server-side, so nobody can fake a misspelling to farm rarity.
Yes. The daily duel is one frozen set per day, but if you want more practice, switch to unlimited mode: every tap of the play button deals a fresh five-prompt duel, as many times as you like. It's the easiest way to sharpen your rare-answer instincts before taking on the real daily.
No. There's no registration, no email, no password. Play instantly, and when you're done, the site generates a challenge link you can paste anywhere — group chat, social post, wherever. Your friend opens it, plays the same five prompts, and the scoreboard settles who picked the rarer answers.
Not yet — each daily duel is a one-day event: five prompts, one frozen set per UTC day, then it's gone. But the unlimited mode never runs out, so you can keep playing fresh duels while you wait for tomorrow's set.
Five prompts. Thirty seconds each. A new reason to brag to your friends.