FlashDigits

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Here is a game that tests your visual reflex, your short-term memory, and your ability to resolve a rapid sequence of images. Randomly selected digits (0-9) are flashed briefly on the screen in a rapid sequence. You are then asked to recall the sequence and enter the numbers using a virtual keypad. If correct, you can proceed to the next round with a shorter display time for each digit. The object is to get to as short a display time as possible. The challenge is to train your brain to make the persistence time of each digit image as short as possible, so that images don't interfere with each other.

If your answer is wrong you get a comment on your capabilities, as demonstrated by your performance. You can try again to improve, starting with the original, longer display time. The instructions give some hints that may be useful in this regard.

The can select the number of digits in the sequence from 2 through 6, the initial display time from 0.3 to 0.7 seconds, and the fraction by which the display time is reduced after a successful round from 0.2 to 0.4.