Isn't that image on the disc made using this poster? http://mi9.com/mass-effect-cover-poster_57389.html

As for finding out what's on the disc, you can try using Xdvdmulleter or Abgx360 (abgx is more recent, but both give info on 360 game discs) on that disc, find out what you can about it.  See if it's an actual 360 game or a fake.
http://abgx360.net/index.html
google for xdvdmulleter