Those are EU DS cases. I just took one of my spare cases and tried to stick a N64 game in there, to check if there's even a remote chance of the game fitting. By the looks of it, the cart might just fit. It means gutting both the DS and GBA cart holders, and the top bracket on the front of the case, but it could work. I'm not sure if I can spare one of my cases to experiment, but after I check out my want list and see how many spare cases I have, I'll let you know.