Sometimes I worry about a lone DS game being exposed to extreme temperatures, erosion, hazardous materials in vaporous form, etc. while it's not in the system. Your design solves that issue expertly, and allows you to accessorize your very small object with a beautiful, classic Mario image!
THERE SHOULD BE MORE VERY SMALL CASES FOR VERY SMALL OBJECTS. I don't mean in this challenge; I mean in the world. And this is an excellent very small case.