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Shepherd's Dog: A Game by the Most Dangerous AI Model

Hacker News · Jun 13, 2026, 5:44 AM

Key takeaways

  • A few days ago, Anthropic released the model that was supposedly too dangerous for the world to see.
  • You can watch the video below or give the game a try It's really fun and exactly how I imagined it.

A few days ago, Anthropic released the model that was supposedly too dangerous for the world to see. I wanted to give it a try using my personal benchmark: can it build a game idea I've had for years, in a single shot?

The model started with a very long reasoning session, and after 45 minutes and more than €20 worth of tokens (!), it happily reported that "Shepherd's Dog is complete — a single 2,319 line index.html with zero dependencies."

You can watch the video below or give the game a try It's really fun and exactly how I imagined it. For me this is the first time an AI model is able to create this for me in one go:

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