Wait for GREEN, then tap as fast as you can. Tapping on red is a false start and restarts that round.
Reaction Tap
A pure reaction test. 5 rounds. The wait time is random every round (1.5–4 seconds) and never reacts to your taps. Finish all 5 rounds with an average of 500ms or faster to win. Tap, click, or press Space.
Results
Under 250ms average is excellent. A false start never counts against your average — the round simply restarts.