How fast are you, really

Wait for the box to turn green, then hit it. Five goes, best one counts, and it goes on the board below — a board shared by everyone who has ever opened this page. No sign-up.

🏆 The board

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Human reaction bottoms out around 150 ms — anything much under that usually means the tap came before the green. The board keeps one best score per person, up to 5000 of them.