Gaming

Generate a whole theme park from one prompt

An engineer built an agent that designs Rollercoaster Tycoon-style parks with worlds, paths and rides.

By thealexanderlee on Hacker News · Posted · Added Oct 15, 2026

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Engagement
58 HN points26 comments · fetched Oct 15, 2026

What they did

thealexanderlee, an engineer at Magic Patterns, built an agent that turns prompts like “build me a cool theme park” into parks with multiple worlds, paths and rides, reusing ideas they use to keep AI websites on a design system.

How it went

It is live as a demo on their site.

Worth knowing

A constrained library of parts keeps outputs coherent.

Builder recipe

Our own starting point, written from the source. Adapt it to your setup.

Stack

  • LLM with tool calls
  • A library of placeable parts
  • A renderer

Steps

  1. Describe the game or mod you want.
  2. Build it with your agent in small playable steps.
  3. Playtest after each step.
  4. Share or publish, respecting copyright.

Starter prompt

Build a theme park with 3 themed worlds connected by paths. Use only parts from the catalog and keep each world visually consistent.

Tags

Industry Games

Read the original

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