Streching Dots

It would only take one or two random choices to produce added effect. Try this for the Dot constructor: public Dot() { setImage(new GreenfootImage(15, 15)); getImage().drawRect(Greenfoot.getRandomNumber(2)==0?img.getWidth()-2:0, Greenfoot.getRandomNumber(2)==0?img.getHeight()-2:0, 1, 1); }

Updating a scenario is done pretty much the same as uploading it to begin with. As long as you do not change the Scenario name in the dialog box.