Just click the green flag! Every few seconds, you get a new batch of up to 1000 polygons, each drawn in a random location and orientation, with a random number of sides (3-11), and with a random pen color, thickness, and shade. The total number of sides in each batch is displayed below. Space bar toggles the music on and off. Ctrl-M will increase the clarity of the drawing.
You can draw a lot of things very quickly in Scratch! If the number of polygons >300, you may hear some lag in the music right when the shapes are drawn. Music: "So What," Miles Davis, from Kind of Blue, 1959