Developer Uses Opus 5.5 to Reverse-Engineer Zoo Tycoon 1
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On October 6, 2026, a developer shared on Reddit’s ClaudeCode / Codex / VibeCoding boards: he used Opus 5.5 to reverse-engineer the binary files of Zoo Tycoon 1 (Zoo Tycoon 1), and in 2 hours he parsed out real-time map data that all previous models had failed to understand, including how cliffs, ledges, and underground geometry are generated. The developer says he had spent months on it with Codex and Opus 4.6 without success. He’s now continuing to refine the rendering logic, aiming to rewrite a brand-new engine for modern Windows, much like OpenRCT2.
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- Reddit · ClaudeCode / Codex / VibeCoding你用 Opus 5.5 做了什么项目？
有开发者用 Opus 5.5 逆向工程《动物园大亨 1》的二进制文件，2 小时就解析出此前所有模型都读不懂的实时地图数据，包括悬崖、岩架和地下几何的生成方式。他此前用 Codex 和 Opus 4.6 做了几个月都没完成，目前正继续打磨渲染逻辑，目标是像 OpenRCT2 那样为现代 Windows 重写一个全新引擎。
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