I think they should get their own sub-category. They are software specifically designed for a video game system. As for the CD-i and 3DO movies, I see no reason to make sub-categories for these, unless someone specifically asks for them, or if we have any already listed in the database (I'm not sure about that). When someone asks for them, let's add them then. I think the GBA videos are fine as is, there aren't that many, and I believe we have them all in the database already.