Mini Games
Number Recall
Memorize the number flashed for 3 seconds, then type it back. Each correct answer adds a digit.
How to Play
- A 4-digit number appears for 3 seconds.
- Once it disappears, type the same number from memory.
- Correct: digit count +1. Wrong: game over — your last cleared length is your score.
Your Best Length
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Try to push past your personal best!
Ranking
| Rank | Nickname | Score |
|---|---|---|
| Rank | Nickname | Score |
|---|---|---|
- |  You | - |
Your record is only saved in this browser.
Records are not shared across different browsers or devices.
Test your other brain stats
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Number Recall gives you one look at a number — exactly 3 seconds — and then asks you to type it back from memory. The first number has 4 digits. Get it right and the next one is a digit longer; get a single digit wrong, or put two digits in the wrong order, and the run ends.
The display time never changes. After a short 3-2-1 countdown, a 4-digit number stays on screen for 3 seconds and so does an 11-digit one, so every extra digit leaves you less time per digit. Type your answer on the on-screen keypad or with your keyboard's number keys. It's checked the moment the last digit goes in, and Backspace fixes a slip before that.
Your score is the longest number you entered correctly; miss the very first 4-digit round and it's 0. The result screen calls 10 digits or more superhuman recall, 7–9 excellent memory and 5–6 a good job. Your personal best is kept in this browser, and every score above 0 goes on the global ranking.
The format is close to the digit span tasks psychologists use to study short-term memory, but this is a game, not a clinical assessment. If you'd rather have longer numbers stay up longer, try the Number Memory Test: it starts at 1 digit and shows each number for 0.8 seconds plus 0.3 seconds per digit. One trick works in both: read the number in groups of two or three digits, the way you'd say a phone number.
Frequently Asked Questions
Q. How does Number Recall work?
A. A number appears for 3 seconds and disappears, and you type it back from memory. It starts at 4 digits, each correct answer adds one digit, and one mistake ends the game.
Q. How is it different from the Number Memory Test?
A. The display time. Number Recall always shows the number for exactly 3 seconds and starts at 4 digits. The Number Memory Test starts at 1 digit and shows each number for 0.8 seconds plus 0.3 seconds per digit, so long numbers stay up longer there.
Q. How is my score calculated?
A. Your score is the longest number you typed back correctly. Missing the first 4-digit round gives 0, and the result screen rates 10 or more digits as superhuman recall and 7–9 as excellent memory.
Q. How can I remember more digits?
A. Split the number into chunks of two or three digits and repeat them silently while it is on screen. A 7-digit number read as 182-73-84 is much easier to hold than 1827384.