Memory
Tiles light up one after another. Repeat them in the same order. Each level adds one more step, testing how much spatial order you can hold in mind.
Results stay in this browser
Choose a mode
Example
Here the order was top left, bottom right, center. You repeat it in that order.
Each mode uses fixed flash and gap durations, so sessions are comparable.
Based on spatial span tasks such as the Corsi block test, used in memory research since the 1970s.
Tap the tiles on a phone or use the numeric keypad on a computer.
Results stay in this browser. No account.
Score, lives used, total clicks and click accuracy for every session.
Slow flashes for learning, faster ones for training, and a single-life challenge.
The longest sequence you repeated correctly.
How it is calculatedLength of the longest completed sequence
How many mistakes the run allowed before it ended.
How it is calculatedStarting lives minus remaining lives
All tile clicks during your turns.
How it is calculatedCount of tile clicks
The share of clicks that matched the sequence.
How it is calculatedCorrect clicks divided by all clicks
These bands are site-defined guidance for adults on a desktop computer or a recent phone. They are not population norms and not a diagnosis.
| Band | Range | What it means |
|---|---|---|
| Exceptional | 15 or more | An unusually long sequence. |
| Excellent | 11-14 | Strong spatial memory. |
| Good | 8-10 | Above a typical span. |
| Average | 5-7 | A common range. |
| Needs practice | 4 or fewer | Try tracing a path in your mind. |
In the early 1970s the psychologist Philip Corsi tapped blocks on a board in sequences and asked people to repeat them. The longest sequence they could repeat became their spatial span.
This online version uses a 3x3 grid instead of blocks, but the idea is the same.
The test measures visual-spatial working memory: holding locations and their order in mind.
Unlike the number memory test, the information is not easy to say out loud, so it relies more on visual and spatial rehearsal.
Short sequences feel effortless. Around six or seven steps, most people start to lose track because each new step must be added without dropping an old one.
Strategies such as grouping steps into shapes help push the limit.
Flash speed matters: faster flashes leave less time to encode each step. Fatigue and distraction also lower scores.
Practice helps a lot at first, as you find a strategy that works for you.
Remembering which tiles flashed is one task. Remembering the exact order is another, and it is usually the harder one. Errors often come from swapping two neighboring steps rather than forgetting a tile entirely.
Some people track order by imagining a path, others by counting or naming positions. Notice which method feels natural to you and use it consistently.
Practice flashes each tile for 600 ms, Standard for 400 ms and Challenge for 300 ms, always with a 200 ms gap. Faster flashes give less time to encode each step.
Lives also change the outcome. With three lives, a single slip does not end the run, so scores tend to be higher than in the one-life Challenge mode.
The same tile can appear more than once in a sequence, but never twice in a row. Repeats make the sequence harder to compress into a simple shape, which keeps longer levels challenging.
The history page tracks your score across sessions. Early sessions often improve quickly as you settle on a way of holding the sequence, whether as a path, a rhythm or a set of named positions.
Later changes are usually smaller. If your score drops on a particular day, it is far more likely to reflect tiredness or distraction than any lasting change.
Comparing modes is not useful, because flash speed and lives differ. Track one mode, ideally Standard, for a reliable trend.
Spatial span tasks are used to study working memory, development and aging.
A simple way to show how visual memory differs from verbal memory.
A short, game-like memory challenge with a clear score to beat.
Professionals use standardized spatial span tests. This online game is not one of them.
Imagine a line connecting the tiles. Shapes are easier to recall than single points.
Break long sequences into small groups and remember each group as a unit.
Watch the whole grid rather than chasing each flash with your eyes.
There is no time limit on your turn. Pause a moment before clicking.
It is a spatial memory task. Tiles flash in an order and you repeat that order. The sequence grows by one step each level.
Watch the grid during playback. When it says Your turn, click the tiles in the same order. Get it right and the next level adds one tile.
Usually two to five minutes, depending on how long your sequences get.
Yes. Press P, use the pause button, or switch tabs. The sequence replays when you resume.
Any modern browser. On a computer the numeric keypad maps to the grid.
Your score is the longest sequence you completed. Click accuracy shows how often your clicks matched.
On this site 8 to 10 is Good and 11 or more is Excellent. These are site guidance bands, not norms.
Use History in the menu, or View history after a session.
Only in your browser.
Reload the page. Clicks during playback are ignored on purpose, so wait for Your turn.
Yes. The numeric keypad keys 7, 8, 9, 4, 5, 6, 1, 2 and 3 match the grid from top left to bottom right.
Replaying it gives you a fair second chance at the same level. A new random sequence would make it harder to tell whether you improved.
Many people reach a sequence of five to seven steps in Standard mode. On this site, 8 to 10 is in the Good band and 11 or more is Excellent. These are site guidance bands, not norms.
No. Your turn has no time limit and the score depends only on order. Taking a short pause before you start clicking is perfectly fine and often helps.
Results depend on age, device, sleep, language, mood and practice. Average several sessions before drawing conclusions. This is not a medical or psychological diagnostic tool.
It takes about a minute. Your results stay private in this browser.