A field of wireframe cubes with no depth cues at all, so each one flips between two readings independently — and on a hit they flip together, which is a thing a real Necker cube never does.
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.