How to build a theme park with Unknown

The author built an agent that generates Rollercoaster Tycoon-influenced theme parks from prompts. The approach borrowed ideas from their work on Magic Patterns’ Design System Agent, where generated websites should respect a company’s existing components, brand and conventions.

For parks, the author translated those constraints into practical rules. Rollercoasters need complete tracks, rides need entrances connected to paths, paths must connect areas, and themed worlds should use matching scenery. Simply giving the model appropriate components did not produce sufficiently coherent results.

The author therefore built an evaluation loop. Magic Patterns generated a park, another agent graded it against a rubric, and the generation agent updated its rules and skill files before trying again. The rubric checked valid rollercoaster tracks with at least one drop, ride access through paths, appropriate scenery within each world and whether the whole park worked together.

After many iterations, the author reports that a simple request can produce a functioning park with guests, rides, paths, rollercoasters and themed worlds. Users can follow guests, read their thoughts and watch them ride. Who it's for: builders experimenting with generated simulation environments where connectivity and thematic consistency need explicit evaluation.

Prompt
Suggested prompt (written by Agents In Use, not the author's)

Source: Hacker News · thealexanderlee