Lots of people have a problem with that. I recently bought star fox adventures for the GameCube, well like half a year ago, but it didnt come with a case either. Or the manual, which you can buy those at many places like ebay or just print them out for free at Nintendo.com. But on older games, and some newer. People do not take that good care of them so they lose things like the case and manual. Which really makes me mad haha. But i do have the original case for wind waker but i need it so you could try ebay or just google it up and see what you find.