Board Thread:Policies/@comment-16461120-20161107075255/@comment-61022-20161108161010

As an after thought to the above regarding the cinematic universe and how to treat tie in material, the question that comes up is surely "What about the X-Men cinematic universe?" or others that are not part of the MCU.

Great question.

I think we should also consider the fact that, particularly with the X-Men movies, Marvel released a bunch of prequel comics on advance of the movie release date (if I'm not mistaken, can someone fact check this for me?) if that's the case, we should take a look at the Handbooks (A-Z edition) particularly the appendix of reality designations. In the case of prequel tie-in comics that were published before the release date of the movie, then technically speaking they should be identified as the first appearance of that reality. I believe in the majority of these cases Marvel lists the film (and not the prequel books or comic book adaptations) as the first appearances of those realities. So I think that we can establish a sort of general rule when it comes to those prequel tie ins and their canonicity.