I've never, ever seen this before, and it does seem it came from the factory like this. I managed to get a mint in box Lylatwars + Rumble Pack with bags and everything, so I'm guessing it was hell looked after. So that's what makes me think it's from the factory and I doubt that the seller would of put this on there.
Out of every game I own, this is a first. Know what the deal is? Oo