Blink Test

How do you play Blink Test?

1. Press Play. The lantern glows red.
2. Wait. After a random delay of one to four seconds it turns green.
3. Tap the game, click, or press Space the moment it turns green.
4. Tap too early and that round restarts.
5. After five good rounds your average reaction time is shown and saved if it is your best.

What are the controls?

Input	Action
Space or Enter	React
Tap or click	React

Tips for a higher score

• Rest a finger on the key or screen so you only need to press, not move.
• Watch the center of the lantern rather than the edges.
• Do not try to predict the timing. The delay is random, and guessing leads to false starts.
• Results vary with your device. Screens and input hardware add their own delay.

Blink Test FAQ

What is a good reaction time?

Results for simple visual reaction tests are often quoted in the 200 to 300 millisecond range, but they vary with age, alertness and the device used. Compare against your own best rather than other people's numbers.

Why is my time slower on a phone?

Touch screens and display refresh rates add some delay between your tap and the browser noticing it.

What happens if I tap too early?

The round is marked too soon and restarts. It does not count toward your average.

Is the best score the lowest time?

Yes. Blink Test saves your lowest five-round average.

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