A $550 one-shot prompt built a game where every texture is code — no images, all shaders
felixrieseberg · x · 2026-11-11
Felix Rieseberg tested Fable 5.2's quality with a one-shot prompt and no human feedback: 8 hours, $550 at API pricing, 2.7M output and 445M input tokens with heavy caching. The surprising finding: everything in the game is code — all textures and models are functions, no images or 3D assets; the model wrote shaders rather than drawing. Source is embedded in the HTML so anyone can inspect it.
Related event: Claude Fable 5.2 Launches: One-Prompt Games and Films Spark Buzz(38 posts)→
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