Claude invents new Fermi questions from random dictionary words
A browser game where you answer with a power of ten leans on Claude for code and content: fact checking answers, writing explanations, and inventing new questions.
Done withClaudeSpotted· by HN user itajaja· Oct 22, 2026
Result A single HTML file, no accounts, no ads, no framework
“had Claude fact check the answers and write the explanations”
Spotted: found in the wild. Details are as reported by the source above and have not been independently verified.
What they did
They built a browser game where players answer six questions a day with a power of ten. They kept a living document of Fermi questions that occurred to them through the day, then had Claude fact check the answers and write the explanations.
How it went
They also built a skill so Claude could come up with brand new questions, fetching a random word from a dictionary or Wikipedia to keep things fresh. They found the resulting prose quite good and engaging. The whole game ships as a single HTML file, with no framework, no build step, no cookies, accounts or ads.
Try it yourself with Claude
Help me turn a list of trivia/estimation questions into a browser game: fact check each answer against reliable sources and write a short, engaging explanation for why it's correct. Then build a skill that generates new questions in the same style, pulling in a random word or topic for inspiration so the questions don't get repetitive.
A starting prompt written by Agents in the Wild. Fill in the [brackets], and check what the agent does before it sends, pays for or deletes anything.
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