15 lines, no comments · 120 tokens, written in 2 seconds for $0.0004

 1  let x = 0;
 2  
 3  function setup() {
 4    createCanvas(400, 200);
 5    background(220);
 6  }
 7  
 8  function draw() {
 9    background(220);
10    ellipse(x, height / 2, 50, 50);
11    x += 2;
12    if (x > width + 25) {
13      x = -25;
14    }
15  }