DescriptionTest your blink/short term memory!
A number will be flashed for 1 to 5 seconds depending on the length of the number. Remember the number. Then input the number that was flashed.
Difficulty levels from 4 to 20 digits. Good luck!
Split number into 1 to 4 groups
Achievement table to keep track of your progress
Email your suggestions and comments to email@example.com
Tags: puzzle, brain, memory, digit span, number span