Looking for recommendations on safe and legal sources for mature gaming fan content

I've been exploring the idea of mature fan content related to games, but I'm having trouble navigating the sheer volume of material out there. I'm specifically looking for recommendations on established platforms or communities that curate this kind of work, rather than just random links. I want to make sure I'm accessing content that is both high quality and, more importantly, legally sourced. Does anyone have experience with specific archives or subreddits that are known for being safe for discussion and viewing? Any pointers on how to filter out the really low effort stuff would be greatly appreciated.