This Sierpinski triangle is made from only the chaos game by drawing 3 points at the tips of the triangle and having a dot randomly picking a point and drawing a dot in the middle between 1 out of the 3 random points on the screen. Then it uses the newly drawn point to do the same over and over causing the Sierpinski triangle to magically form. Check out my Sierpinski's carpet made from chaos game: https://scratch.mit.edu/projects/947458274/
Nice.