Sequence Memory
Repeat an ever-growing pattern of flashing tiles.
Play now →Number Sequence Memory
Numbers flash one by one — then it's your turn. Recall the whole sequence in order to advance; each round adds one more digit. Where does your working memory hit the wall? Most people find out somewhere between 5 and 7.
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Start Click Start and watch the numbers
Digits flash one by one — recall the full sequence to level up.
How to play
- Press Start — digits flash one by one (first sequence is 3 long).
- Type the full sequence into the box in the same order.
- Correct? The next sequence grows by one digit. Wrong? The run ends there.
- Your score is the longest sequence you cleared. Beat your best.
Frequently asked questions
What is digit span?
Digit span is the classic working-memory measure: how many random digits you can recall in exact order after seeing them once. The test starts at 3 digits and adds one more every time you succeed.
What is the average digit span?
Most adults recall 5–7 digits reliably, and 7±2 is the famous capacity estimate from psychologist George Miller. Nine or more is genuinely strong; twelve and up is exceptional and usually involves deliberate techniques.
How can I recall longer sequences?
Chunking works: group 4 7 1 5 8 2 into pairs or into "years" and "prices" so your brain stores six items as two or three. Rhythm helps too — many people repeat sequences with a beat.
Is digit span the same as intelligence?
No. It correlates with fluid reasoning but is heavily trainable, and it does not capture knowledge, creativity or strategy. Treat it as one fitness metric for one specific mental muscle.
Why do the numbers flash one at a time?
Simultaneous display lets you rehearse visually with the whole group in view — that is a different, easier task. One-by-one presentation forces encoding into working memory as it arrives, which is what digit span is designed to measure.