Silk Flow

Silk Flow is a field of roughly two and a half thousand particles moving through an invisible current. The current itself is a slowly evolving pattern of angles covering the whole screen, so left alone the particles organise into long parallel ribbons that drift and rewind through each other. Each particle draws a short line where it has just been, and the background fades rather than clearing, so those paths accumulate into strands that look woven rather than scattered. Colour is driven by speed and direction, which means fast-moving currents run bright and stalled regions sink into deep blue.

Your cursor is a disturbance in that current. Particles within range are pulled toward it, but they also receive a sideways push, so instead of collapsing onto your pointer they wrap around it and orbit. Move slowly and you drag a thick braid of silk behind you. Move quickly across the field and you leave a wake that keeps turning over long after you have gone. The Swirl slider controls how much of that force is sideways rather than inward, from a tight knot at zero to a wide, lazy vortex at full.

Push Out inverts the pull, carving an expanding clearing through the strands, which is a completely different feel from drawing them in. The Trails slider sets how fast the canvas fades — low values keep every path for several seconds and build dense, painterly layers, high values give clean moving lines with almost no history. There is no score, no goal, and nothing to fail. It runs free in the browser on desktop and mobile with nothing to install.