One-shot Prompt

A developer launched Fable52.games, an arcade showcasing single-file HTML 3D games generated end-to-end by Anthropic's Claude Fable 5.2 from one detailed prompt over hours of autonomous agentic coding. Each game inlines markup, CSS, JavaScript, shaders and synthesized audio into one .html file, running offline via WebGL and the Web Audio API with no server or build step. The site also exposes the original prompts and accepts community submissions, offering an interactive window into long-horizon agent coding.