How fast can you react? Wait for green, then tap or click!
Click Start Test. The game waits for a random moment and then turns green. Click the arena as quickly as you can. Your reaction time is measured in milliseconds.
Keep your hand relaxed, focus on the center of the screen, and avoid guessing when the green signal will appear.
Reaction Test is a simple browser challenge designed to measure how quickly you respond to a visual signal. Try multiple rounds and see if you can beat your best score.