A few errors
I tried this in flash and I have the following feedback to give you:
The circle used for the scope dosent follow the mouse properly, i tried several times but the mouse was always above the circle not in the centre.
You dont give any instructions on how to make the circle reveal things which is needed a lot.
The circle should be white and the background black not the other way around :)
If you were to remake this with all this fixed it would rock.