Pong with an unbeatable AI paddle

mediumFilecoding

The task

Build Pong in a single HTML file with a human paddle (W/S or mouse) versus an AI paddle. The AI should be very hard to beat — it predicts where the ball will land by simulating bounces off the top and bottom walls, but add a small reaction delay/jitter so it is beatable with skill. Include scoring to 11 and a serve after each point.

Useful links:madewithclaude.comsimonwillison.net

GLM 5.2

Featured run

Live app Open in new tab

Ran the full Idapt agent loop: 13 steps · 13 tool calls · deployed a live app · 2 files.

Run this yourself with Build a web app

Completed$0.1011m 11s262k / 26k1313

Open live app

Produced files (2)

index.html12 KB Download

Loading preview...

The full run

Loading the run...