Fruit fly’s mapped brain trades crypto, controls robots, and claims contested chess wins

A fruit fly has 166,000 neurons. Yet when scientists published a complete map of those 166,000 neurons, developers around the world immediately asked the same question: what can we make it do? The answer, it turns out, includes trading crypto, playing chess, and piloting robots. The map that started everything On September 3, 2026, Google Research and the Howard Hughes Medical Institute’s Janelia Research Campus released the MaleCNS v1.0 dataset, a full connectome of an adult male fruit fly covering its brain, optic lobes, and ventral nerve cord. The map details approximately 125 million synaptic connections across those 166,000 neurons, making it the most complete wiring diagram ever published for any adult animal’s central nervous system. A 2024 effort mapped the female fly brain, which contained around 139,000 neurons. The new male map is larger, more detailed, and covers the complete central nervous system rather than just the brain. The dataset is public. Within days of release, independent developers were running the fly’s actual biological wiring through simulation environments, not building artificial neural networks inspired by biology, but directly simulating the exact co...