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Self-running 3D Rube Goldberg machine
Leo shared this full prompt as the identical one-shot instruction used with Opus 5.5 in Claude Code and GPT-6 Astra in Codex CLI. It requests a self-contained Three.js-rendered Rube Goldberg simulation with custom physics, an automatic cinematic sequence, and deterministic replay.
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Prompt
Leo shared this full prompt as the identical one-shot instruction used with Opus 5.5 in Claude Code and GPT-6 Astra in Codex CLI. It requests a self-contained Three.js-rendered Rube Goldberg simulation with custom physics, an automatic cinematic sequence, and deterministic replay.
Keywords
- Claude Opus 5.5
- leo
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Prompt optimization tips
1
Specify editability
State which objects must remain separate, named and editable; otherwise a visually convincing shell may still be unusable.
2
Close the test loop
Ask the model to run the scene, inspect visible failures and repeat until concrete frame-rate, interaction and layout checks pass.
3
Stage long builds
For large worlds, split the work into districts, assemblies or milestones and approve each section before expanding scope.
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