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Letter Lockbox: a word game built over a weekend

A word game built from scratch with Claude Code.

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Credits

  • HN submitter christensen143 Source ↗

Earliest dated source: 24 Jun 2025

The full story

Letter Lockbox is a daily word game in the spirit of Wordle and Spelling Bee, built from scratch over a weekend with Claude Code. The author shortlisted three game ideas with Gemini, let family vote (their daughter picked this one), and followed a planning-file method with PLANNING.md and TASK.md for iterative AI development. It's live at letterlockbox.com.

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Sources

From the maker's own write-up or code. We summarise what they report; we haven't tested it ourselves.

  • Hacker News: Show HN: Letter Lockbox – A word game I built over the weekend with Claude CodeBlog or write-upletterlockbox.com
  • Hacker News discussion (3 points)Forum threadnews.ycombinator.com
    HN submitter: christensen143Posted 24 Jun 2025

    The Show HN post describing how it was planned and built.

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What this is. Real projects where people used Claude to build, fix, port, revive or take apart something, from jailbroken Kindles to rebuilt DOS games, plus the times it went badly wrong. Every build links to where it was shared, and every source is listed here.

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