User blog comment:MattyMG13/Whoniverse Fanon: The Games Characters and Stuff/@comment-3538016-20140617200211

I'm not entirely convinced that you need signed permissions from every user. After all, the CC-BY-SA summary states that "the licensor cannot revoke these freedoms as long as you follow the license terms." What this seems to mean is that as long as you attribute this wiki with a list of users, and release the game content under a CC-BY-SA license, you should have free rein when it comes to what you're allowed to do. You should also indicate that minor changes have been made in order to make the content fit with copyright law--for example, eliminating references to the Shadow Proclamation or the Doctor.

I'd strongly recommend seeking some form of legal advice, ideally from a member of Staff or from users who have travelled this path before. I fear complications may develop, especially around whatever software you use to create the game.

With that said, I, Pinguinus, hereby endorse the Whoniverse Fanon Games in the use of any content I have published to this wiki, with the exception of derivative works based on canon properties owned by the BBC.