Claude Opus 5.5 Max Builds a Tree Spot-the-Difference Game
Tree Appreciator
- Who
- Simon Willison
- What
- describes prompting Claude to build a Three.js tree spot-the-difference game
- Quote
In this case Claude crunched for 3 hours and 7 minutes before retuning a cosy little spot-the-difference game with music and animation and achievements that's quite compelling to play.
What happened
Simon Willison describes prompting Claude Opus 5.5 Max in the default Claude iPhone app’s chat mode to build “Tree appreciator,” a three.js game about comparing algorithmically generated trees. Claude worked for 3 hours and 7 minutes before returning a spot-the-difference game with music, animation and achievements that Willison found compelling to play.
The story so far
Simon Willison prompted Claude Opus 5.5 Max to build “Tree appreciator,” and it returned a Three.js spot-the-difference game after working for 3 hours and 7 minutes. The game asks players to compare algorithmically generated trees and includes music, animation and achievements. Willison used chat mode in the default Claude iPhone app and described the resulting game as compelling to play.
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