Reaction Time Tester

Click the box, wait for it to turn green, then click as fast as you can. 5 rounds. Click too early and it counts as a false start.

Boundaries (excellent/good/average/slow) are commonly-cited approximate ranges for simple visual reaction time — your browser/display add their own latency, so treat this as fun, not a scientific instrument.

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About Reaction Time Tester

5 rounds, real millisecond timing via performance.now(), false-start detection — no download.

Click when the box turns green across 5 rounds; the game measures your real reaction time with the browser's high-resolution timer and rates each result against commonly-cited human reaction-time ranges. Clicking too early is caught and tracked separately as a false start.

What you get

Live playable game at /play/reaction-time (free, unlimited plays)
Commercial license: white-label/embed this game on your own site

A game for entertainment. Careers, salaries, and life outcomes are simplified game mechanics for fun, not real-world data, financial modeling, or career advice.

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