Characters drawn in pencil and watercolour, living on your page. They notice people. People notice them.
He is watching your pointer. Tab works too, and so does poking him.
Every mark is a pencil stroke in code: one source, the same pixels on every screen.
Pointer, keyboard focus and touch, with a pause button and a calm mode for reduced motion.
No images, no fonts, no framework. One small module and a custom element.