The phrase "going gold" means that a game's final code is completed, that no more changes will be made before it is pressed on discs or digitally packaged for distribution. It's not a reference to any sales figures. I know it means something completely different in the music industry, where records go gold or platinum or whatever. Look at it as the equivalent of the movie industry's "in the can" term.
"Too often we enjoy the comfort of opinion without the discomfort of thought." - John F. Kennedy on reality
"What if everything you see is more than what you see--the person next to you is a warrior and the space that appears empty is a secret door to another world? What if something appears that shouldn't? You either dismiss it, or you accept that there is much more to the world than you think. Perhaps it really is a doorway, and if you choose to go inside, you'll find many unexpected things." - Shigeru Miyamoto on secret doors to another world