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Claude Opus 5.5 Max creates compelling "Tree Appreciator" game

Simon Willison experimented with Anthropic's Claude Opus 5.5 Max to create a game called "Tree Appreciator." The game involves identifying subtle differences between two algorithmically generated trees, incorporating music, animation, and achievements. Willison noted that explicitly asking Claude to make the game "fun" yielded surprisingly effective results, with the model taking over three hours to develop the interactive experience. AI

IMPACT Demonstrates AI's capability in creative game development and interactive experiences.

RANK_REASON User experiment with an AI model to create a game, not a direct model release or significant industry event.

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AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Claude Opus 5.5 Max creates compelling "Tree Appreciator" game

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12 / 100
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Tool
User experiment with an AI model to create a game, not a direct model release or significant industry event.
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product, model release
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High
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Breaking (< 6h)
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COVERAGE [1]

  1. Simon Willison TIER_1 English(EN) ·

    Tree Appreciator

    <p><strong>Tool:</strong> <a href="https://tools.simonwillison.net/tree-appreciator">Tree Appreciator</a></p> <p>Another game experiment with Claude. This one used the default Claude iPhone app (chat mode, not Claude Code mode) where I prompted Claude Opus 5.5 Max with:</p> <bloc…