Claude Sonnet 5.5 one-shots a 3D zombie FPS in 49 minutes for $177

141_1337 · reddit · 2026-09-29

Redditor 1411337 shared a video showing Claude Sonnet 5.5—one day after release—one-shotting an entire 3D zombie first-person shooter in 49 minutes for $177 in API costs, with no manual fixes along the way.

The takeaway: the gap between describing a game and having a playable game is collapsing, making this a striking datapoint for frontier coding capability.

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