Reaction — how it works

A five-round reaction time test. Wait for the screen to flip, then tap as fast as you physically can. ONE MORE measures every round in milliseconds and scores your best and average reaction time.

How to play

1. 1Hold still while the screen reads WAIT.
2. 2The moment it flips to TAP, tap or click anywhere.
3. 3Tapping early forfeits the round, so trust the flip.
4. 4Five rounds decide your average, your best and your score.

A run takes about 30 seconds. There is no account, no download and no database — your scores and streak are kept in this browser only, and the leaderboard roster is simulated for this early version.

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