Reaction Speed

How to Play

The screen is red: wait. When it turns green, tap as fast as you can. We take five tries and calculate the average in milliseconds. Tapping before green cancels the try. The human average is between 250 and 300 milliseconds.

• This game is completely free and runs right in the browser, with no download and no sign-up.
• Works on phone, tablet and computer, with touch or keyboard.
• After every round, challenge your friends with your score on WhatsApp in one tap.