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Simon Willison builds Tree Appreciator, a Three.js game, by prompting Claude on iPhone

1 article1 sourcesince Oct 14Last article 4h ago ·

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Simon Willison says he built Tree Appreciator, a Three.js spot-the-difference game, by prompting Claude Opus 5.5 Max in the default Claude iPhone app's chat mode, not Claude Code.

The game shows two algorithmically generated trees and asks players to find the differences between them, with music, animation and achievements. Willison says Claude took 3 hours and 7 minutes to produce it. He adds that telling the model "make sure it is fun" worked well for him.

Written by AI from the articles below · updated Oct 14, 8:45 PM ET

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Latest developmentOct 14, 5:23 PM ET
Simon Willison builds Tree Appreciator, a Three.js game made with Claude

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Oct 14
  1. Simon WillisonBlog
    Simon Willison builds Tree Appreciator, a Three.js game made with Claude

    AISimon Willison says he prompted Claude Opus 5.5 Max in the Claude iPhone app's chat mode to build "Tree Appreciator," a Three.js game. The game shows two algorithmically generated trees and asks players to spot the differences between them, with music, animation and achievements. Claude took 3 hours and 7 minutes to produce it.

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