How to play
Read. Place. Reveal.
QuoAnno is a timeline game, not a quiz: you are not asked to recall a date, you are asked to reason your way to one.
Read the event
You get a visual, a title and just enough context to understand what you are placing — without giving the date away.
Find the era
Click the timeline, zoom, and move earlier or later. Deep-time events and modern events live on the same logarithmic canvas, so the first move is choosing roughly which order of magnitude you are in.
Lock your guess
Land inside the accepted range and you score a full 1000; before 150 BC you lock in a time window instead of a year, and any window that overlaps the range counts. Outside it, the score falls away smoothly with distance rather than in steps: half marks at roughly 8% of the event's age, and never tighter than five years for recent events. A closer guess always scores better than a further one.
Read the reveal
The accepted date appears with the event's own context. The useful part is the direction and size of your miss, because that bias repeats — most players run too recent on the ancient world and too early on the last thirty years.
Keep going
There is no daily cap in Endless mode. Change your category mix at any time from your player menu.
Deep time uses ranges
The farther back in time you go, the less meaningful year-by-year precision becomes. Before 150 BC, QuoAnno therefore asks you to estimate a period rather than an exact year. The available range grows as you move deeper into the past. From 150 BC to today you still place an exact year; before that, the arrow keys and the Earlier / Later buttons move one window at a time, from 25 years near the classical world to 100 million years near the formation of the Earth. Any window that overlaps the accepted date scores in full.
This gameplay resolution is separate from historical uncertainty. Some ancient events are precisely dated; others are known only within a scientific or historical range.
Four Points
Four Points is a quicker timeline challenge. Each event comes with four unlabelled positions, A through D, with 12 seconds to choose. Only after your answer locks are the four dates revealed. A correct answer earns 1000 points plus a modest streak bonus.
Today's Daily Mix
Daily Mix gives every player the same ten events in the same order for the UTC day, with 20 seconds per question. You have one official attempt in this browser, can close the page and resume the same deadline, and can replay for timed practice after finishing without changing your official score or Daily streak.
Playing together
In Live Party, one host creates a private room and shares its code, link or QR code. Everyone places the same event independently. When all active players answer—or the timer ends—the date is revealed. The host controls when the round leaderboard appears and when the next question begins.
Challenging friends
Challenge freezes one question sequence and one required 10, 15, 20 or 30 second answer window so friends play under the same rules hours or days apart. Share the private link or QR code, complete your own attempt, and compare official first-attempt scores on the final leaderboard.
Getting better at it
Scores improve fastest through technique rather than memorisation. How to guess the year of almost anything covers anchor dates, bracketing and the visual tells; deep time explains why the oldest questions need a separate set of anchors; and BC and AD explained covers the era labels, including the missing year zero.
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