Here's the problem: I need the execution to be stopped when the Scores class is the active world, but I also need that the user can't reset the World. When I do Greenfoot.stop(); in the constructor then doing: PauseSimulationAction.getInstance().setEnabled(false); ResetWorldAction.getInstance().setEnabled(false); doesn't work (anymore). Any solutions?

If the sound only activates from pressing the arrow keys, then what is the point of the blue circle in the middle of the frame (unless it's just decoration).

I was staring at this until I got bored (which didn't take too long since there is not much to see). It's just a bunch of shapes which rapidly change color.

The time on the clock is wrong (unless it's not supposed to say the time in my time zone, but I think we're in the same time zone). This reminds me a little bit of two of my scenarios.

But with using getWorld().getObjects(), I ran into problems when I tried to check if one instance of a class is touching a different instance of the same class, so I changed it (and if you leave it alone, other people can/will have the same problem). I got the idea of changing the touch method, from the greenfoot.Actor class which did that.