» Fri Apr 01, 2011 6:21 pm
The only reason the product code would have an effect is because you're trying to install it; its a form of copy prevention.
However, that only applies to the PC. For Game consoles, there is a line of code within the game that says that it "belongs" to that type of console; the code usually cannot be burned, so it also acts as a form of copy prevention without some kind of console hack.
Back to that game code; what it is is probably just an ID the manufacturer uses to tell the difference between the GOTY edition of Fallout and the normal version of Fallout. It'll have no effect on your game.