Wait for the red box to turn green, then click as fast as you can. Click too early and the round resets.
How it works
Wait for the red box to turn green, then click as fast as you can. Click too early and the round resets. Most people land somewhere around 200-300 ms, and reaction time naturally varies with age, alertness, and your device.
π§ Free testπ
Last updated: 2026-06-18 Β· β Reviewed by the All-Lifes editorial team Β· About Β· Methodology