⚡ Reaction
Tap the instant it turns green — your average, on a world leaderboard. Reaction tests measured reaction time — free in your browser, no download, no signup. Reaction is a solo mode with a world leaderboard — play it any time at blocks.pw/s/reaction, no download or signup.
How to play Reaction
- Start a run — a block appears red.
- The moment it flips green, tap. Your milliseconds are recorded.
- Five rounds; false starts sting your average.
- Your average is the score the world leaderboard ranks.
Rules and scoring
Averaging five rounds is the honest part: anyone can luck one 170 ms tap, but an average forgives nothing. It's the same simple-reaction measurement labs use, running in your browser with a leaderboard attached.
Compare your number against the population: the adult average is ~273 ms, gamers land near 230 ms, and the elite floor sits below 180 ms. The reaction-time guides break down every 5 ms step of that ladder.
Strategy: how to win at Reaction
- Never anticipate — a false start hurts your average more than a slow honest round.
- Run it at your alert hours; the same person varies 20–30 ms between sharp and sleepy.
- Rest the finger on the screen. Travel time is fake slowness you can delete today.
- Ten runs, then look at your trend — single averages still bounce around.
Where Reaction fits
Solo scores post to the world leaderboard and your country leaderboard, so a good run means something. When you want a human opponent instead of a clock, the quick match duels pull from the same skills.