The game can always be accessed directly regardless of the Adult Content (previously called NSFW) setting. The setting only removes the project from the browse and search pages for people who not have enabled adult content browsing. I definitely think we need more refined settings. For the time being, if the project page, image, and title contains nothing explicit it should be okay to leave it unchecked. Just make sure you include an appropriate warning on the. We'll probably change our policy about this on the future though, since we want to make the site safe to browse for a younger audience and that means making it a bit more difficult to access the adult content.