Hey, we currently don't have fine grained controls for marking adult content. I think the best approach for you is to put a disclaimer on the game page about the kind of content it includes. If the page itself doesn't advertise anything that might be seen inappropriate (images, title, text) etc. then you can leave off the NSFW setting. The NSFW option is used to filter things out of browse that people might not want to see when browsing the site.