Memory Sequence — Number Pattern Game
Watch the number sequence flash, then type it back. Sequence grows each round.
How to play
- Press 'Start' — digits will flash one at a time on screen.
- After the last digit disappears, an input box appears.
- Type all the digits you saw in order, then click 'Submit' or press Enter.
- Each correct round adds one more digit to the next sequence.
- One mistake ends the game — how many digits can you hold in memory?
Watch digits flash one at a time, then type the full sequence from memory. Each correct round adds one more digit. How high can you score?
How it works
Memory Sequence flashes a series of numbers on screen, one at a time, and then asks you to type them back in order. Each successful round adds one more number to the sequence, progressively testing your digit-span working memory.
Digit span — the number of digits a person can immediately recall — averages around seven for adults, but varies with age, attention, and practice. Psychologists use digit-span tasks clinically to assess working memory capacity and detect cognitive change.
Strategies that measurably improve performance include grouping digits into pairs or triplets (chunking), sub-vocalizing the numbers as you see them (verbal rehearsal), and imposing a rhythm on the sequence as if it were a phone number. Active rehearsal during the display period, rather than passive watching, significantly extends how many digits you can hold.
This tool is useful as a quick self-assessment of working memory, a daily brain-training exercise, or a classroom demonstration of chunking and cognitive load.
Worked example
Recall a 7-digit sequence using chunking
- Sequence flashes: 4, 7, 2, 9, 1, 6, 3.
- Group into chunks as they appear: '47' — '291' — '63'.
- Rehearse each chunk quietly: 'forty-seven', 'two-ninety-one', 'sixty-three'.
- When input time arrives, recall chunk by chunk: 4-7, then 2-9-1, then 6-3.
- Type the full sequence: 4729163.
7 digits recalled correctly without exceeding working memory capacity.
Common mistakes to avoid
- Passively watching digits flash instead of actively rehearsing them during the display period.
- Trying to remember every digit independently rather than grouping them into 2-3 digit chunks.
- Typing too slowly after the sequence ends — the rehearsal trace fades quickly, so type promptly.
Key terms
- Digit span
- The maximum number of digits a person can see once and recall immediately in correct order.
- Verbal rehearsal
- Silently saying items to yourself as a memory aid, encoding them in the phonological loop of working memory.
- Chunking
- Combining individual digits into multi-digit groups that are processed as single memory units.
Frequently asked questions
- How fast do the digits flash?
- Each digit shows for 700ms with a 300ms gap between them.
- Do spaces matter?
- No — spaces are ignored when checking your answer. Just type the digits consecutively.