I have tries to get Nintendo games on Mondays befor and they said not until Tuesday -.-
Maybe you had the wrong release date? Dunno. But everyone will should be able to get the game on the day it comes out. I've never had a problem where I had to wait until a Tuesday. --- Official Miror Admin with Shadow Gardevoir and Shadow Dusclops
GameStop gets games just the same as any other location would. They will probably even have a midnight release in most areas. There are exceptions, based on location, but typically they get the games when they are released, just the same as everyone else.