.js

var x = 10
var y = 10
function setup() {
	frameRate(1)
	createCanvas(200, 200)
  
  for(var i = 0; i < 10; i++)
    setTimeout(addRect, 5000)
}
function addRect(){
  rect(x, y, 20, 20)
  x += 20
  y += 20
}
function draw() {
  ellipse(width/2, height/2, 50)
}