Memory Number Recall
Remember a sequence of numbers, then type them back in order. Sequence grows longer each round.
How to play
- Click Start — digits flash on screen one at a time.
- Memorize the sequence in order (starts at 3 digits).
- When the display clears, type all the digits you saw in the correct order.
- Each correct round adds one more digit to the sequence.
- A wrong answer ends the round; your best level is saved.
A sequence of digits flashes on screen one at a time. Memorize them, then type them all in order. Each correct round adds one more digit. Most people max out at 7±2 digits — the famous limit of working memory.
Frequently asked questions
- What is the average memory span?
- Research by George Miller (1956) found the average human can hold 7 ± 2 items in working memory. Most people score between 5 and 9 on this test.
- How do I improve my score?
- Chunking helps — group digits into pairs or triples (like phone numbers). Verbally repeating the sequence also strengthens short-term retention.