Pet the Cat
Stroke the big cat with a finger or the mouse: rub its head and chin and it squints and purrs, rub its belly too long and it swats you, and once it is fully content it rolls over.
Built with
How it was made
Written with Claude Code as a single web page with no libraries; the purr is low filtered noise plus a 52 Hz hum, gated by a 24-per-second tremolo, and it swells while you keep stroking.