'Polka' combines two of the simplist forms in geometry (the rectangle and the circle) with a bright 'popping' color palette to create bold, abstract, geometric designs.

Creation: A series of colorfully illustrated layers (containing transparent regions) are stacked. Each layer is selected at random from several options. This means that each output is a unique artwork.

To download a 1500x2000px PNG: Click/tap 'open', then click/tap the image to make a "Download image" button appear.