# Perceptle

Canonical page: https://perceptle.org/
Last updated: 2026-10-16

> Perceptle (perceptle.org) is a free daily perception test played in the browser. Every day it serves ten quick tests drawn from twelve: holding a button for an exact time, recalling a color seen for a second, remembering where dots were, finding a shape's balance point, averaging bars at a glance, a line-length illusion, matching speeds, mirror symmetry, comparing areas, finding a circle's center from an arc, locating a shade on a gradient and reaction time. Each answer is measured and scored out of 100; the day's total is out of 1000 and ranked against everyone who played the same puzzle. No account, nothing to install.

## Key facts
- Daily: 10 tests drawn from 12, the same for everyone on the same date; a new set at midnight local time; they get harder from first to last.
- Scoring: each test scores 0 to 100 by how close the answer is, falling off smoothly with the size of the miss; 10 tests make a total out of 1000.
- Titles: Sharp-Eyed 900+, Keen 800+, Steady 650+, Wobbly 500+, Fooled under 500.
- Reaction test: any reaction up to 200 ms scores 100; tapping before the change, or within 100 ms of it, is a false start.
- Ranking: a finished daily is scored again on the server and compared with everyone who played that puzzle; players see the share they beat, overall and per test.

### Perceptle, a perception test you play in your browser

Perceptle is a free daily perception test. Instead of asking what you know, it asks how well you see, time and judge: hold a button for exactly four seconds, find a color you saw for a second, tap the center of a circle from a short arc, react the instant a panel changes. Each test takes a few seconds and the whole Perceptle set takes about three minutes.

Every answer is measured, not marked right or wrong. You see exactly how far off you were, in milliseconds, pixels or percent, and Perceptle turns that distance into a score out of 100. Small misses cost little and big misses cost a lot, so a good day and a great day look different.

There is nothing to install and no account to make. Perceptle runs on phones, tablets and computers, and on a phone held upright the board turns to fill the screen. Open Perceptle, press Start, and today's perception test begins.

### How to play Perceptle

Press Start and Perceptle shows the first of ten tests. Each one opens with a single line telling you what to do. Press Go when you are ready, answer on the board, and press Lock in. The reveal then shows the right answer next to yours, with the gap between them and your score.

- Some Perceptle tests flash something and take it away: a color, a set of dots, a row of bars. Watch closely, because it will not come back.
- Some ask for a judgment you can adjust: drag a line, stretch a shape, slide a speed until it looks right.
- Some are about time: hold for a set number of seconds, or react the moment something changes.

The ten tests get a little harder from the first to the last. Leave mid-test and Perceptle gives you a fresh one when you come back, so nobody gets a second look. The full rules are on [how to play Perceptle](https://perceptle.org/how-to-play).

### The twelve tests in Perceptle

Every day Perceptle draws ten of these twelve perception tests, so the lineup changes from day to day. Each one also has its own practice page, where you can play it as long as you like and watch yourself improve.

- [**Time Perception Test** Hold the circle for exactly the time shown. No timer to watch.](https://perceptle.org/tests/time-perception)
- [**Color Memory Test** A color appears for a moment. Find it again on the color field.](https://perceptle.org/tests/color-memory)
- [**Visual Memory Test** Colored dots flash once. Then point to where one of them was.](https://perceptle.org/tests/visual-memory)
- [**Balance Point Test** Tap the spot where this shape would balance on a pin.](https://perceptle.org/tests/balance-point)
- [**Average Estimation Test** Bars flash once. Set the line to their average.](https://perceptle.org/tests/average-estimation)
- [**Line Length Illusion Test** Stretch one line until both lines are the same length.](https://perceptle.org/tests/line-length-illusion)
- [**Speed Perception Test** Watch the first dot cross once, then set the second dot to the same speed.](https://perceptle.org/tests/speed-perception)
- [**Symmetry Test** Tap where the dot would land if mirrored across the line.](https://perceptle.org/tests/symmetry)
- [**Area Estimation Test** Resize the shape until it covers the same area as the circle.](https://perceptle.org/tests/area-estimation)
- [**Circle Center Test** Only part of a circle is shown. Tap its center.](https://perceptle.org/tests/circle-center)
- [**Shade Matching Test** Find where a single shade sits along the gradient.](https://perceptle.org/tests/shade-matching)
- [**Reaction Time Test** Wait for the panel to change color, then tap as fast as you can.](https://perceptle.org/tests/reaction-time)

### How your Perceptle score works

Each test is scored out of 100. A perfect answer scores 100, and the score falls away smoothly as your miss grows: every test has a typical miss that scores about 61, and half of that scores about 88. The ten scores add up to a total out of 1000, and the total earns a title.

| Total | Title |
|---|---|
| 900 and up | Sharp-Eyed |
| 800 to 899 | Keen |
| 650 to 799 | Steady |
| 500 to 649 | Wobbly |
| Under 500 | Fooled |

The results page draws your day as a ring of ten colored wedges, one per test, each as long as its score. It is the quickest way to see which of your senses was sharp today and which one Perceptle fooled.

### See how you rank against today's players

When you finish, Perceptle scores your answers again on our server and compares you with everyone who played the same puzzle. You see the share of players you beat overall, and for each test. The first player of the day is told so, and the first few see how many came before them until there are enough players for a fair percentage.

Only your first finished run of each Perceptle puzzle counts, and the server never trusts a score sent by the page, so the ranking stays honest. It keeps moving as more people play, so it is worth a look again later in the day.

### More ways to play Perceptle

- [Perceptle Unlimited](https://perceptle.org/unlimited): endless rounds of ten random tests, each round a little harder than the last, with your best round saved.
- [The Perceptle archive](https://perceptle.org/archive): every past daily puzzle since No. 1, so a missed day is never lost.
- [Practice any single test](https://perceptle.org/tests): one perception test at a time, as long as you like, getting harder as you improve.

The daily puzzle is still the heart of Perceptle: one set a day, the same for everyone, new at midnight in your own time zone.

### Streaks, stats and sharing your score

Perceptle keeps your games, your average, your best total and your streak in this browser, with no account. A streak counts the days you finished on the day itself. Catching up from the archive adds to your stats but not to your streak.

Share your result as a short line of colored squares, one per test, or as a picture of your score ring sized for stories and chats. When the ranking is in, the share adds your place, like Top 12%. Friends who play the same day get the same ten tests, so the comparison is fair.

### Why a daily perception test works

A perception test is most useful when you take it often. One result says little; thirty days of Perceptle results say a lot. Because every Perceptle puzzle is scored on the same scale, your totals line up from day to day, and the stats in your browser show your average creeping up as your eye for time, color and space gets sharper.

The daily format also keeps Perceptle fair and social. Everyone meets the same ten tests on the same date, so a friend's 812 and your 790 mean the same thing. Compare totals, compare score rings, and see which perception test tripped each of you up. Then come back tomorrow, because the next Perceptle lineup will be different.

- Same puzzle for everyone each day, so results are directly comparable.
- About three minutes, so a daily perception test fits in a coffee break.
- Every Perceptle result is measured, not marked, so progress is easy to see.

### The science behind each perception test

Every Perceptle test is built on a classic task that researchers use to study the senses: reproducing a time interval, recalling a color, remembering where things were, judging a shape's balance point, averaging a group at a glance, the Müller-Lyer line illusion, matching speeds, mirror symmetry, comparing areas, reading a curve, telling close shades apart and simple reaction time.

The puzzles, scoring and design are our own. Scores are for fun and for beating yesterday's you. A perception test like this is not a medical or psychological assessment, and the same senses that feel sharp in the morning can be a little off after a long day, which is part of what makes a daily check interesting.

## FAQ

### What is Perceptle?

Perceptle is a free daily perception test in your browser: ten quick tests of time, color, memory, space and reaction, scored by how close you come, with a new set every day.

### Is Perceptle free?

Yes. Perceptle is free to play on any device, with no account, no download and no paywall.

### When does a new Perceptle come out?

Every day at midnight in your own time zone. Everyone who plays on the same date gets the same ten tests.

### How long does a game take?

About three minutes. Each of the ten tests takes a few seconds, plus a moment to read its one-line brief and see the reveal.

### How is my score worked out?

Each test scores out of 100 by how close you came, falling off smoothly as the miss grows. The ten scores add up to a total out of 1000 and a title from Fooled to Sharp-Eyed. The details are in how to play.

### How does the ranking work?

When you finish, our server scores your answers again and compares you with everyone who played the same puzzle. You see the share of players you beat, overall and test by test.

### Can I play past puzzles?

Yes. The archive has every Perceptle since No. 1. Catch-up games count toward your stats but not your streak.

### Can I play more than once a day?

The daily puzzle is once a day, but Unlimited serves endless rounds and every test has its own practice page.

### Does Perceptle work on a phone?

Yes. Perceptle works on phones, tablets and computers. On a phone held upright the board turns to fill the screen, and the puzzle and scoring stay the same for everyone.

### Is Perceptle a medical test?

No. Perceptle is a game. Its tests are based on tasks from perception research, but the scores are for fun, not a medical or psychological assessment.

## Pages
Each page below has a Markdown version with key facts, the page's content and its FAQ.

- [Perceptle](https://perceptle.org/index.md): Homepage and today's puzzle: ten quick perception tests a day, scored out of 1000 and ranked against everyone who played; how it works, the twelve tests, scoring, modes and FAQ.
- [Perceptle Unlimited](https://perceptle.org/unlimited.md): Perceptle Unlimited: endless rounds of ten random tests from all twelve, each round harder than the last, with your best round saved; free and unranked.
- [Perceptle Archive](https://perceptle.org/archive.md): The Perceptle archive: every past daily puzzle from No. 1, with that day's lineup and your score; catch-up games count toward stats, not the streak.
- [Perception Tests](https://perceptle.org/tests.md): All twelve Perceptle perception tests, each with its own practice page: reaction time, color memory, time perception, visual memory, symmetry and more.
- [Time Perception Test](https://perceptle.org/tests/time-perception.md): Time perception test: hold a circle for a target time between 2 and 7 seconds with no timer showing, scored by how far off you let go.
- [Color Memory Test](https://perceptle.org/tests/color-memory.md): Color memory test: a color fills the screen for a moment, then you find it again on a hue and lightness field, scored by how different the two look.
- [Visual Memory Test](https://perceptle.org/tests/visual-memory.md): Visual memory test: 3 to 7 colored dots flash for about a second, then you tap where the named one was, scored by distance.
- [Balance Point Test](https://perceptle.org/tests/balance-point.md): Balance point test: tap where an irregular ten-sided shape would balance on a pin (its centroid), scored by distance relative to the shape's size.
- [Average Estimation Test](https://perceptle.org/tests/average-estimation.md): Average estimation test: 6 to 12 bars flash for about a second, then you drag a line to their average height; scored out of 100 by how close you land.
- [Optical Illusion Test: Which Line Is Longer?](https://perceptle.org/tests/line-length-illusion.md): Optical illusion test: drag a line with flared tails until it matches a fixed line with arrowheads (the Müller-Lyer illusion); scored by percentage error.
- [Speed Perception Test](https://perceptle.org/tests/speed-perception.md): Speed perception test: watch one dot cross its track once, then use a slider to make a second, looping dot move at the same speed; scored by percentage error.
- [Symmetry Test: Find the Mirror Point](https://perceptle.org/tests/symmetry.md): Symmetry test: tap where a dot would land if reflected across a slanted mirror line; scored out of 100 by the distance from the true mirror point.
- [Area Estimation Test](https://perceptle.org/tests/area-estimation.md): Area estimation test: drag a square (a triangle on harder rounds) until it covers the same area as a circle; scored by percentage error.
- [Circle Center Test: Find the Center From an Arc](https://perceptle.org/tests/circle-center.md): Circle center test: only an arc of a circle is shown; tap where the whole circle's center would be, scored by distance as a share of the radius.
- [Shade Matching Test](https://perceptle.org/tests/shade-matching.md): Shade matching test: a swatch shows one shade from a two-color gradient bar; tap where it sits on the bar, scored by distance as a share of the bar's length.
- [Reaction Time Test](https://perceptle.org/tests/reaction-time.md): Reaction time test: wait for the panel to change color, tap, and get your time in milliseconds; decoys and false starts on harder rounds.
- [How to Play Perceptle](https://perceptle.org/how-to-play.md): How to play Perceptle: the daily set of ten, the three steps of every test, controls, scoring out of 100 and 1000, titles, ranking, fair play, modes and stats.
- [About Perceptle](https://perceptle.org/about.md): About Perceptle: what it is, the research behind the tests, fairness, privacy and contact.
- [Privacy](https://perceptle.org/privacy.md): What Perceptle stores in the browser and sends to rank a daily; cookie-free analytics.
- [Terms](https://perceptle.org/terms.md): The terms for playing Perceptle: free, fair play, for fun, no warranty.