The Entertainment Software Association is generally in the business of fighting legal restrictions on the sale of video games, but apparently they're happy with the law recently passed in Maryland, says Gamasutra:
Doug's being okay with this is because all the law (PDF) does, apparently, is insert the words "video game" into an existing statute dealing with pornographic materials. Hell, the original law probably would have sufficed, as it already had the phrases "computer disc" and "videodisc" in there. I doubt that, under the original law, anybody caught selling Lula 3D to gradeschoolers would have found themselves in trouble anyway.