{"slug": "space-exploration-game-made-using-claude-opus-5", "title": "Space exploration game made using Claude Opus 5", "summary": "A developer used Anthropic's Claude Opus 5 in a single 24-hour marathon session to build a complete space exploration game, The Long Silence, with no external assets or code — every pixel and sound was generated by the AI. The game is playable at longsilence.anshu.dev and its code is available on GitHub.", "body_md": "I ran Claude Opus 5 in one marathon session for 24 hours straight, and ended up with this game.\nNo external assets or code. Every pixel and sound was built by Claude.\nPrompts, workflow, code, and link below.\n(sound on!)\n\n- Play it yourself:\n[longsilence.anshu.dev](https://longsilence.anshu.dev)Code:[github.com/achimala/TheLo…](https://github.com/achimala/TheLongSilence)This took a few steps, not one-shot. But the process was simple and almost entirely hands-off. Two main ideas: 1) Adversarial subagent, based on[@mattshumer_](https://x.com/mattshumer_)'s Claude of Duty prompt: Have an independent - Had to check comments to see if this was a joke. Holy shit.\n# Join the conversation", "url": "https://wpnews.pro/news/space-exploration-game-made-using-claude-opus-5", "canonical_source": "https://twitter.com/anshuc/status/2081801966158811506", "published_at": "2026-07-28 05:38:34+00:00", "updated_at": "2026-07-28 05:52:14.453626+00:00", "lang": "en", "topics": ["artificial-intelligence", "generative-ai", "ai-tools", "developer-tools"], "entities": ["Anthropic", "Claude Opus 5", "The Long Silence", "Anshu Dev", "GitHub"], "alternates": {"html": "https://wpnews.pro/news/space-exploration-game-made-using-claude-opus-5", "markdown": "https://wpnews.pro/news/space-exploration-game-made-using-claude-opus-5.md", "text": "https://wpnews.pro/news/space-exploration-game-made-using-claude-opus-5.txt", "jsonld": "https://wpnews.pro/news/space-exploration-game-made-using-claude-opus-5.jsonld"}}