Mind Meets Silicon: When Living Brains Take on Video Games and Full Simulations

Imagine a petri dish of human brain cells beating a classic first-person shooter. That’s exactly what happened in early 2026 when Cortical Labs hooked up roughly 200,000 living human neurons on its CL1 chip and taught them to play DOOM. Building on their 2021 breakthrough where the same biological hardware mastered Pong, an independent developer used simple Python code to train the neurons in just one week. Electrical pulses fed the game’s visuals and threats straight to the cells; their firing patterns moved the character and pulled the trigger. The result? A real biological computer learning a complex game faster than many expected.

At the same time, scientists achieved something even more profound with an insect. In October 2024, a global team completed the first full connectome of an adult fruit fly brain: every one of its 139,255 neurons and all 50 million synaptic connections mapped in 3D. Then Phil Shiu and colleagues at UC Berkeley loaded that entire wiring diagram into a laptop simulation. The digital fly brain reacted to virtual tastes and touches exactly like a living one would, predicting neuron activity with stunning accuracy. It’s the largest complete brain ever simulated in software, and it runs on ordinary hardware.

These two advances, one wet and alive and the other fully digital, show biology and computing converging fast. Human neurons playing DOOM prove real brains can be programmed like silicon. The fruit-fly simulation proves we can copy an entire nervous system and make it think. Together they hint at a future where biological computers power AI, and full brain uploads move from sci-fi to lab bench.

Sources

Human brain cells playing DOOM - New Scientist
IFLScience, and Cortical Labs official video. Fruit fly connectome and laptop simulation: Berkeley News and Nature papers (2024).