You have no images in your 'images' folder of the project. You have neither set any images to be the default for objects of the classes nor created and set any images to any of your objects. So, the default 'No image' little greenfoot image is used (which is put in your 'images' folder automatically) for your actors and your world background remains a flat white.
You have no images in your 'images' folder of the project. You have neither set any images to be the default for objects of the classes nor created and set any images to any of your objects. So, the default 'No image' little greenfoot image is used (which is put in your 'images' folder automatically) for your actors and your world background remains a flat white.
Sorry, this was supposed to be for someone else (lol).
So, the problem here is that the GameOver is showing as a greenfoot icon-- is that right?
I found the problem. Do the following in the GameOver class:
// change
public void act()
// to
public GameOver()
The act method will not run if the scenario is stopped. The image must be given beforehand (when the object is created and, in this case, before being placed into the world).