Both of the bottoms are black. I meant the top labels are silver and gold, and after looking through a magnifying glass, I noticed that the silver labeled one has a copyright date of 1990, 2002, Electronic arts and a code of slus-00113gs (under the rating), whereas the gold labeled one has a 1996 Maxis for the copyright and slus-00113 under the rating. So, what is the difference between the GS version and the not GS version?