Each round grows a pair of trees from one seed, and three small details differ between them. You drag to turn both trees at once, scroll to look closer and click a difference in either tree when you spot it, and every finished pair goes into a herbarium. It's a relaxing game about taking time to notice small details.
How the creator made it
The creator says they made the game in the regular Claude chat with a single prompt while out looking at trees. They asked for a Three.js game where players compare two trees generated by code and asked Claude to make it fun and beautiful. The shared chat shows Claude building the game, checking it in a headless browser and bundling it into one HTML page. The creator says they used the result without follow-up prompts.
From their page on simonwillison.net ↗ and a page on claude.ai ↗.
The prompt
Build a three js game called "Tree appreciator" - it shows you two algorithmically generated trees and the game mechanics is about appreciating the differences between them. Think hard about how to make sure it is both fun and beautiful.More like this
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The game and its prompt belong to @simonw. Preview recorded by us. Made this game? Here's how we list it.