Bauhaus

Circles, bars and half-moons in primary colours, moving like clockwork

A flat geometric poster in red, yellow, blue and black on cream paper comes to life. Half-moons turn, bars slide and a small circle rolls along an invisible grid, one calm move at a time. Move the mouse and the shapes turn to face it while the dot grid swells like a lens, or click to drop a ring. With music on, the stripes and dots dance as a flat equaliser.

"Set as wallpaper" opens the free app. No Windows? Download a picture or a looping video.