Kinetic Sand Table Simulation

A reusable prompt supplied by the posting author as the exact open prompt received by GPT-6 Astra and Fable 5.1. It requests a self-running kinetic sand-table simulation in a single HTML file: a ball draws non-repeating geometric patterns in sand, then smooths the surface before beginning another pattern.

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.

Imagine It. Shape It.