I gave Gemini 4 Argon one photo of a desk. It built a racing game, then its own test trapped it.

Google says its newest model, Gemini 4 Argon, can turn pictures of a desk into a racing game you can drive. Their demo had several pictures of their desk and a team of agents checking each other's work. I wanted to know if that holds up for a normal person, so I gave Argon one free photo of a stranger's desk, two hours, and no help.

If one photo is enough for a game of this exact desk, even with a nudge, Argon is a tool. If I get a blur of some desk, it's a demo. Claude watched the run for me, and the brief listed seven things the game had to have: the desk recognisable, a closed track around and over its objects, collision, kart physics that slide in corners, engine sound that follows speed, custom shaders, and a lap counter with a timer.

Argon started by laying a grid over the photo and measuring where everything sits. Google's demo used an image model for textures; Argon didn't. It cut ten textures straight out of the photo. Then it wrote Blender scripts to build the desk and the kart without ever opening Blender's window, and laid a track that climbs a ramp onto the shelf, runs past the little ornaments and comes back down.

It also checked its own work: a test script drove the kart round the track and took pictures. Twenty-seven minutes in, I had a desk I could drive on.

The next test told the kart to drive three quarters of the way round and only then take a picture. The kart got stuck up on the shelf, by a little brass thumbs-up, and the script had no time limit. So Argon waited. When Claude looked in, it had been stuck for 22 minutes; working out why took another 15. Thirty-seven minutes, lost to a test it wrote itself.

The no-help promise broke twice. Once by mistake: Claude misread Argon's log and switched its game off for two minutes, which wasn't the bug. And once on purpose: I sent one message saying where the kart gets stuck and that every test needs a time limit.

Argon took thirteen minutes to fix it. It reshaped the track along the shelf and put a limit on every test. Then it said the game was tested over many laps, which is exactly what Beam said in my last video, wrongly. So Claude let the game drive itself on Argon's own autopilot for twenty minutes: 44 laps, never stuck. The engine sound I bet would break is there, built in code. All seven things are in, with three small faults, like a camera that ends up inside the shelf.

Argon went through about 6.66 million tokens, most of it re-reading its own work, which Google sells cheap. At Google's introductory per-use prices, the whole run comes to about $3.

Did Argon do it on its own? No: it needed one message from me. But one photo, one agent and one nudge gave me a game of this desk. By my rule, that's a tool. Just don't leave it alone.

The model: Gemini 4 Argon ( gemini-4-argon-high ) in Antigravity's command line, one agent, 18 October 2026. Google's claims are from its post of 13 October 2026, https://deepmind.google/blog/introducing-gemini-4-argon/. The desk photo is Jeff Sheldon's, CC0 ( https://unsplash.com/photos/mKxdiW2QEkE ). Gemini, Antigravity and Google are Google's.