How the light sequence works
Holeshot uses a "sportsman tree" sequence borrowed from real drag racing: three amber lights fire in order, half a second apart, followed by an unpredictable delay before the green light. The random delay is the whole point — it stops you from timing the rhythm and forces a genuine reaction to the stimulus rather than a rehearsed guess.
Click or tap the instant green appears. Click before that and it's recorded as a false start — a red light — and doesn't count toward your five valid runs.
~250ms
Median human visual reaction time.
150–220ms
Typical range for trained athletes and competitive gamers.
<100ms
Faster than the nervous system allows — flagged as anticipation, not reaction.
What actually gets measured
The timer starts the exact millisecond the green light renders and stops on your click or tap, using your browser's high-resolution performance clock. Your device's display refresh rate and input hardware add a small, unavoidable amount of latency on top of your biological reaction time — this is true of every browser-based reaction test, not just this one.