Escalator Slinky

An infinite physics simulation of a rainbow slinky on a moving escalator.

Description

An HTML canvas simulation featuring a multi-coil rainbow slinky with realistic spring dynamics. The slinky tumbles end-over-end down a moving up-escalator, creating an infinite loop of motion. The build serves as a stress test for AI model intuition regarding physics and dynamic systems.

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Details

Why this is interesting: Showcases a model's impressive capability to one-shot complex spring physics and intuitive dynamics in a single prompt.
Attributed to: @EvoLinkAi
Built with: Haiku 5.5 GPT-6 Luna
Tags: #physics #canvas #simulation #one-shot

Discovered: X
First posted: X · Oct 10, 2026
Listed: Added yesterday
Build: Moderate
Models: Strong

Prompt

Make me a single HTML file of a rainbow slinky going down an up-escalator forever. No libraries, just canvas and code. The slinky should be a chain of springs, each coil a different color of the rainbow. It starts folded in half like a horseshoe draped over a step. When dropped it flips end-over-end down the steps and because the escalator keeps moving up it tumbles in place and never reaches the bottom. Include a drop button and a reset button.

Escalator Slinky

Description

How it grew

Escalator Slinky

Description

How it grew