445 real eye neurons → 1 Giant Fibre → jump muscle. Real synapse data, live.
You vs the fly's brain
Can you beat a fly's brain?
A real fruit fly has 166,700 neurons. Google scientists mapped every single one in 2026. Its escape reflex is faster than a blink.
A target follows the fly. Tap inside the red circle for a fast, decisive swat — you'll usually get it. Tap in the outer ring and it's a slower swat — the fly's brain gets a real chance to escape. Watch the track underneath to see it race.
What the track shows:
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Eyes445 real neurons watching. The bar fills as more of them spot danger.
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Giant FibreOne huge neuron. A spark races toward it. If it fills all the way — SPIKE!
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Jump!The spike fires the jump muscle. The fly's gone in milliseconds.