Say If you buy a video game open up the case take the game out and look at the disc you will see that the disc has a picture of the video game on it. I've seen people put the same picture that would come on a real dvd or game on a copied version how do they do that. P.S. the reason I explained it like that is because I've asked this before but some people are so slow they don't know what I'm talking about.
People put the disc in a scanner. Scanners can scan more than paper. Or they go someplace like here http://cdcovers.cc/ and download whatever they seek.