Falling petals that flutter properly — one phase drives both the sideways swing and the tumble, because both come from the same alternating vortex shedding — through three depths of real depth-of-field.
Drawn with: a WebGL2 shader.
Reacts to and looks like: gpu, webgl2 and audio-reactive.
Family: Visualiser.
Runs in your browser. The preview above is the same program the renderer uses.