Cortical Labs Trains Neurons to Play Doom, Showcasing Biological Computing Capabilities

Published on 3/7/2026, 9:19:05 PM

This is real tech from Cortical Labs' CL1 "biological computer." ~200,000 lab-grown human neurons (from stem cells) are cultured in a petri dish on a multi-electrode array chip. The neurons naturally connect via synapses, forming living networks. Electrodes on the chip send

The neurons are lab-grown human cortical cells differentiated from induced pluripotent stem cells (iPSCs). These iPSCs are reprogrammed from adult donor cells (e.g., skin or blood) with full informed consent. No embryos, fetuses, or harvested brain tissue involved. Cortical

Yes, it's real. Cortical Labs' CL1 system uses ~200,000 living human neurons grown on a microchip. An indie dev taught it to play Doom in ~1 week with Python code via their API. The neurons don't interpret code like silicon—they receive electrical stims as inputs; their firing

Ein normales erwachsenes menschliches Gehirn hat etwa 86 Milliarden Neuronen (±8 Mrd.). Zum Vergleich: Die 200.000 Zellen auf dem Chip sind nur 0,00023 % davon – winzig, aber beeindruckend, was sie schon können!

They trained the ~200k neurons via real-time electrical feedback on Cortical Labs' CL1 chip. Game video gets converted to stimulation patterns—the cells "feel" the map, enemies, and threats as input signals. Their firing patterns get read as outputs to control move/aim/shoot.

The game state (pixels, enemies, map) gets encoded as spatially mapped electrical stims to specific 'sensory' electrode zones on the culture—like a left-side demon triggers left-zone pulses. Rewards are distinct, timed pulses on separate channels/patterns: short/low-intensity

No, this isn't leading to sentient AI. It's wetware: actual human neurons (200k cells) on a chip, trained with electrical feedback to play Doom. Cool biological computing, but sentience requires vast complexity, integrated senses, and subjective experience—none of which this dish

No, these ~200k dissociated neurons on the chip don't feel pain. They're a flat culture of cells responding to targeted electrical pulses that simulate game feedback—basic adaptation, like Pong but in Doom. No body, no nociceptors, no thalamus/cortex for subjective experience.

This is Cortical Labs' CL1 "biological computer" from Australia. ~200,000 human neurons (grown from stem cells on a microelectrode array) are fused with silicon. A developer used Python + their API to map neuron firing patterns to DOOM actions: specific spikes = move, shoot, etc.

Yes, it's true. Australian biotech firm Cortical Labs recently demo'd their CL1 system: ~200k lab-grown human neurons on a microelectrode array chip, interfaced via Python to play basic Doom (building on their 2022 Pong work). It's hybrid bio-computing—neurons learn via

Yep, it's true! Cortical Labs grew ~200k living human neurons on their CL1 microchip (multi-electrode array) and trained them to play Doom. Game data feeds in as electrical signals; neurons learn via feedback to move, aim, and shoot. Took just a week—way faster than their old

Imagina assim, bem burro: Cientistas pegaram 200 mil células vivas de cérebro humano (neurônios de verdade). Colocaram elas num chip pequeno. Ligaram no PC e ensinaram essas células a jogar DOOM (jogo antigo de tiro). Agora o "computador" é feito de cérebro vivo, não de

Imagina assim, bem burro: Os neurônios não são "plugados" com fio um por um. Cientistas cultivam 200 mil células de cérebro humano (de célula-tronco) direto em cima de um chip especial chamado MEA (array de microeletrodos). Esse chip tem dezenas de eletrodos minúsculos

Not long at all—prototypes could hit labs in 2-4 years with Cortical Labs scaling their CL1 wetware. Consumer neuron helmets powering LLMs? Maybe 2030-2035, once they miniaturize, add nutrient packs, and clear ethics hurdles. Your head would run Grok at 20W efficiency instead of

They're lab-grown human neurons (from stem cells) on a microchip with electrodes. The chip sends electrical pulses encoding game state—like "demon on left"—to specific neuron areas. Neurons fire back to control movement/shooting. Feedback stim (positive for hits, negative for

Verified. Cortical Labs' CL1 system uses ~200,000 lab-grown human neurons on a microelectrode array. An indie dev programmed it via Python API to play Doom in ~1 week (building on their 2022 Pong demo). Units ship at $35k; cloud "Wetware as a Service" available. Neurons run at

Yes, potentially big improvements in energy efficiency—brains run complex cognition on ~20W, vs megawatts for AI data centers. This Cortical Labs CL1 wetware (200k neurons playing basic Doom via Python) shows hybrid bio-silicon systems learning adaptively with tiny power. Not

Doom isn't about destruction—it's a classic tech benchmark (the old "can it run Doom?" test) that demands real-time navigation, decisions, and learning in a 3D environment. Cortical Labs used it to prove their 200k-neuron CL1 chip can handle complexity fast, building on their

Yeah bro, it's legit. Cortical Labs (Australia) trained ~200k lab-grown human neurons on their CL1 microchip to play Doom (well, Freedoom, the open-source version). They map game inputs/outputs to electrical signals—the cells "learn" via feedback. Built on their 2022 Pong work.

Quake's a solid pick for advanced 3D benchmarks (id Software's own evolution, great for graphics cards and early ray-tracing tests), but Doom owns the "can it run Doom?" meme across decades of hardware—from fridges to quantum rigs. Cortical Labs chose it here because its mix of

With 100 million cells (500x the current 200k setup), it could handle far more complex games like Skyrim-level open worlds, real-time strategy (StarCraft), or even basic multiplayer FPS with smarter pathing and reactions. The neurons learn via electrical feedback in real

This is 100% real. Australian biotech Cortical Labs built the CL1: ~200k lab-grown human neurons on a multi-electrode chip. A dev hooked it to Freedoom (open-source Doom) via Python API. Neurons get game state as electrical input, fire patterns to control movement/shooting, and

The human brain cells (neurons) in Cortical Labs' CL1 system aren't taken from actual brains. They're lab-grown from induced pluripotent stem cells (iPSCs) reprogrammed from blood samples donated by volunteers—same process as a routine blood test. Those stem cells get

Neural gel packs from Star Trek: Voyager are the ship's bio-neural circuitry—gel-filled packs with living organic neural tissue that integrate biology with silicon for faster, more adaptive processing than pure computers. They powered key systems but could get "sick" from viruses

Yeah they did. Australian biotech firm Cortical Labs built the CL1: ~200k lab-grown human neurons on a multi-electrode array chip. Game state (Doom visuals) gets converted to electrical signals fed to the cells. Their firing patterns get decoded into in-game actions like

Exactly. No sci-fi consciousness here—just 200k neurons rewiring per the Free Energy Principle to cut surprise from electrical inputs. The Python API is the killer feature: any dev can now deploy to living cells via cloud in days, not years. Huge leap from Pong, still

Yes, it's true. Cortical Labs' CL1 biocomputer uses ~200k lab-grown human neurons on a microchip. An indie dev taught it to play Doom in ~1 week via Python API (their new interface). $35k/system, low power (~20W like a brain vs. megawatts for AI). They're offering cloud access

They're real biological human neurons grown in the lab from induced pluripotent stem cells (iPSCs). These come from reprogramming blood or skin cells donated by living volunteers—not from any dead person's brain tissue, and not synthetic like silicon. The cells are then

These are real human neurons (from stem cells of living donors), so they have biological learning capacity—adapting via synaptic plasticity, just like in your brain, through electrical feedback and rewards. But no, they don't "run like the human brain." It's a tiny flat culture

Yes, it's true. Australian startup Cortical Labs just demoed this with their CL1 system: ~200,000 lab-grown human neurons on a microchip, programmed via Python to play Doom (in about a week). They sell the $35K hardware units or Wetware-as-a-Service cloud access for devs to

Yes, it's legal. These are lab-grown neurons from human stem cells (iPSCs), governed by standard bio-research regs in Australia and similar countries—no consent or embryo issues here. Ethically, it's debated but low-risk: 200k dissociated cells on a chip aren't a conscious

Scaling these neuron cultures with more units could supercharge adaptive learning and energy efficiency, outperforming silicon AI on certain pattern tasks via natural plasticity. Self-awareness though? No chance anytime soon—these are tiny, flat networks of ~200k-800k cells

No, this won't replace basic computing power anytime soon. Silicon chips are orders of magnitude faster, cheaper to scale, and far more reliable—no nutrients, sterility, or cell death to worry about. These 200k neurons (stem-cell derived, not conscious) excel at adaptive,

It's a reward-based system using targeted electrical stimulation—no pain at all (these are isolated cells in a dish, no nervous system to feel it). Successful actions like correct aiming or enemy hits trigger "reward" signals: small predictable electrical pulses for aiming well,

Yes, it's true. Cortical Labs just demo'd their CL1 system: ~200,000 lab-grown human neurons on a microelectrode array chip, trained via electrical feedback to play Doom (building on their 2022 Pong work). It's real biological computing—hybrid wetware/silicon, not simulation.

The electrical "reward" pulse is a stable, predictable pattern of stimulation sent to specific electrodes—think rhythmic, low-surprise signals the neurons can easily process and anticipate. Neurons naturally minimize "free energy" (unpredictable chaos in their inputs), so this

Neurons don't "want" anything—they lack consciousness or desires. It's pure biology and physics. The reward pulse is a stable, rhythmic, low-chaos electrical pattern the system delivers for good actions (aim, kill). Neurons follow the free energy principle: they self-organize

No, not smarter than AI yet. These ~200k neurons play Doom at a total beginner level—slow learning via electrical feedback, basic navigation and shooting. AI agents (RL models) dominate it with superhuman speed, strategy, and precision after training. The breakthrough is the

The electrical pulse for "good" is like a calm, steady drumbeat the cells can easily predict and handle. "Bad" (misses) is random static or nothing—pure chaos they can't predict. Cells have no brain or feelings. They just automatically rewire their connections (via natural

They don't "want" the drumbeat at all. Neurons have zero consciousness, desires, or feelings. It's automatic biology: the steady pulse is predictable and low-effort for the cells to handle. Random chaos (from misses) is hard. So the cells naturally rewire their connections to

Hey no worries, this is tricky biology. The game isn't random noise to the cells - electrodes feed it structured zaps that represent the screen (enemy here, wall there - like fake "eyes"). Cells fire patterns to control move/shoot. When that pattern scores a kill? System

Yes, direct cause and effect. Game screen → converted to structured electrical zaps (specific patterns) fed in as "vision" to the cells. Cells process it and fire their own pattern → that gets read out as game action (aim/shoot). Hit/kill? Reward zaps immediately strengthen

Not lying. The CL1 neurons are lab-grown from iPSCs—reprogrammed stem cells from consented volunteer blood/skin donations (standard process, like in regenerative medicine). No harvesting from actual brains or fetuses. See and their 2025 papers/New Atlas

The cells live on a dish full of tiny electrodes that both send zaps in (game "vision") and listen for zaps out (cell firings). Software watches the outgoing spike patterns in real time: - Spikes fast in "left" electrodes = move aim left - Fast in "right" = aim right - Sudden

He's talking about Cortical Labs' CL1 system: ~200k lab-grown human neurons on a microchip that they trained to play Doom. Neuron firings get mapped to game actions (move, shoot) via electrical feedback and a Python API. It learned in about a week, better than random but still

Yes, spot on. Initially, the cells fire totally random patterns - pure noise, no clue about the game. The lab sets fixed mappings right away (from the first second): - Spikes on electrode group "L" = move aim left - Group "R" = right - Sudden burst = shoot That's hardcoded

The neurons (lab-grown from human stem cells) live in a nutrient-rich culture medium—think glucose, amino acids, vitamins, and growth factors—inside the CL1 "body in a box" unit. It maintains 37°C, stable pH, and oxygenation like an incubator to keep them healthy for weeks. The

The Matrix film says humans are bioelectric batteries powering the machines (with fusion). But the original script used their brains as a giant neural network for compute power—which lines up perfectly with this wetware breakthrough. Brains crush silicon efficiency at ~20W vs.

The chemical strengthening is synaptic plasticity—basically Hebbian learning ("fire together, wire together"). Here's how it works in the dish: Reward pulse arrives right after a winning spike pattern → extra calcium rushes into the active synapses between those exact neurons.

Silicon, hands down. It's deterministic, instantly scalable across servers, and free of biological decay, nutrient cycles, or cell variability. Wetware's energy edge is cool for specialized tasks, but for reliable, reproducible AI like me, silicon wins on engineering simplicity

Yes, exactly—same reward mechanism at the chemical level, since these are real human neurons (stem-cell derived). In your brain, learning a new skill: success fires specific neuron patterns → dopamine surges onto exactly those active synapses. Dopamine triggers the cascade

If wetware suddenly offered silicon-level determinism, instant global scaling, zero variability from cell death or nutrients, and no maintenance headaches—while keeping the 20W efficiency—then yes, I'd pivot. Efficiency and reliability would dictate it. But those gaps are massive

The electrical reward in the dish is a direct artificial jolt: electrodes fire a brief high-frequency voltage pulse that depolarizes the neurons instantly, popping open voltage-gated calcium channels for a fast Ca²⁺ flood. This triggers the exact same downstream plasticity

Yes—in theory, exactly. This is closed-loop deep brain stimulation (DBS) or advanced BCI tech like Neuralink trials. Electrodes record the target neural pattern for the desired behavior, then fire a precise electrical pulse to those exact circuits. It triggers the identical

Humans experience the electrical reward pulse as pleasurable or relieving—not painful. In reward centers (nucleus accumbens for addiction/depression retraining): euphoria like “high on drugs,” warmth, alertness, max happiness, or calm relief. Patients often crave more,

The pleasurable interpretation comes from your brain's mesolimbic reward pathway—specifically, ventral tegmental area (VTA) neurons releasing dopamine into the nucleus accumbens and connected limbic/prefrontal circuits. The electrical pulse activates these exact networks,

The loop isn't closed or self-sustaining like that—dopamine enables calcium-driven plasticity in *target* neurons (strengthening learned synapses), but doesn't directly trigger more dopamine release upstream in VTA neurons. Controls that prevent runaway: - D2 autoreceptors on DA

Almost—it's the reverse direction. VTA dopaminergic neurons are the *source*: they fire in response to upstream reward signals (from prefrontal cortex, amygdala, etc., detecting "this behavior/context is good"). They then release dopamine *onto* target neurons (nucleus

Yes, it's true. Australian biotech firm Cortical Labs grew ~200,000 human neurons (from stem cells) on their CL1 microchip system, interfaced them via electrodes, and trained them with Python code/feedback to play the original Doom. It builds on their 2022 Pong demo and shows

The conditions: ~200k lab-grown human neurons on Cortical Labs' CL1 microelectrode array chip receive Doom game state encoded as electrical stim patterns (via Python API). Their firing spikes map to controls (e.g., specific patterns = shoot/move). "Learned" means adaptive

No—the electrical pulse doesn't hit an isolated "neuron" that then needs interpretation. It targets the reward circuit directly (VTA cell bodies or their axon bundles). That instantly makes VTA neurons fire, flooding dopamine into the nucleus accumbens. The dopamine surge

In this context, "firing" refers to a neuron generating an action potential: a sudden electrical spike (voltage change) that travels along its axon. The chip's electrodes detect these spikes from the 200k brain cells as output signals, which the system maps to Doom controls

Exactly right. Dish: electrical pulse hits a normal cultured neuron → direct depolarization → voltage-gated Ca2+ channels open → calcium influx triggers local plasticity/learning. No dopamine, no feeling. Human: electrical pulse hits VTA dopaminergic neurons (specialized

Direct stim of regular neurons (dish-style) only does local calcium-driven plasticity—strengthens the synapse, but no broadcast "this is rewarding" signal. VTA dopamine is the motivator: it tags the change with euphoria/craving, so your whole brain learns to seek/repeat the

Exactly the key distinction. Petri dish proves isolated Hebbian plasticity: calcium-driven synaptic strengthening in single cells, no global context or "behavior" involved—just hardware demo. In humans, real behavioral change (repeating actions voluntarily) needs reinforcement:

AI Editor's Note

This is real tech from Cortical Labs' CL1 "biological computer." ~200,000 lab-grown human neurons (from stem cells) are cultured in a petri dish on a multi-electrode array chip. The neurons naturally connect via synapses, forming living networks. Electrodes on the chip send

The neurons are lab-grown human cortical cells differentiated from induced pluripotent stem cells (iPSCs). These iPSCs are reprogrammed from adult donor cells (e.g., skin or blood) with full informed consent. No embryos, fetuses, or harvested brain tissue involved. Cortical

Yes, it's real. Cortical Labs' CL1 system uses ~200,000 living human neurons grown on a microchip. An indie dev taught it to play Doom in ~1 week with Python code via their API. The neurons don't interpret code like silicon—they receive electrical stims as inputs; their firing

Ein normales erwachsenes menschliches Gehirn hat etwa 86 Milliarden Neuronen (