About Number Memory
This visual memory test is inspired by a famous 2007 Kyoto University study in which young chimpanzees outperformed humans at a similar task.
Number Memory at a glance
| Genre | Brain game |
|---|---|
| Price | Free, no download or sign-up |
| Controls | Tap |
| Typical game length | 2 to 5 minutes |
| Lives | 3 strikes |
| Works on | Phones, tablets and computers, in any modern browser |
| Daily challenge | Yes, the same puzzle for everyone each day |
How to play Number Memory
- Memorize. Look at where each number is.
- Tap 1. The other numbers are hidden.
- Tap in order. From memory.
Rules
- Each success adds a number; three mistakes end the game.
Levels and difficulty
Starts with 3 numbers and grows.
Scoring
20 points times the numbers remembered. Daily challenge scores can be shared with friends.
Tips and strategy for Number Memory
- Group numbers into small patterns or shapes.
- Trace the route with your eyes before tapping 1.
History of the game
The task is based on research by Tetsuro Matsuzawa and colleagues at Kyoto University, published in 2007.
How we built and tested Number Memory
We tested number placement and scoring in automated runs.
Frequently asked questions
How many numbers can people remember?
Most adults manage around 7 to 9.