Same questions can be asked about books. Should we permit tags for the book(s) that OP mentions in their question?
Using a tag for a movie/game that came out recently sounds like a bad idea, because the game/movie just provides context to where the question came from.
The essence of the question is about something from a specific mythology (in your example question it's about the Greek mythology. The question could've just as easily came up without the game.
An example question from Arqade where a similar thing happens. It's a question asking what game is shown on a screenshot. Said screenshot happens to be from the movie Kick-Ass. The game is not tagged kick-ass though, only game-identification. The latter is the core issue, the former is just context about where the question originated from.
Having a source for where a question came from is good, that might help in finding out why the question was asked, but isn't needed for being able to answer it.
What are tags for? They serve two purposes:
- To aid in searching
- To serve as guidance for brand new users to write good questions
The former is of only marginal use here; since the mythology itself is off topic, there will never be that many questions on the subject that are on topic.
However, the latter is what really concerns me. By having tags for things like this, we actively invite users to ask off topic questions. These are exactly the sort of problematic tags that enraged the ServerFault community about web control panels, and is currently inspiring a major cleanup in Programmers Stack Exchange.
I want to cut the head off of clearly off-topic tags very early on, so they don't become big problems later. Tags about video games and movies are just such tags.
All that being said, I support and actively encourage tags like antigone, theogony, metamorphoses (greek); historia (arthurian), etc. as long as they are clearly first sources about on topic material.
If the mythology question is about a game it belongs in the Gaming SE. If it's about pure mythology (not in movies, games, or magazines,) then it belongs here.
If I would watch a movie in which mythology plays a(n important) role, and if I would be wondering about the mythological accuracy of the storyline or of plot elements in the movie, I would certainly use a site called mythology.stackexchange to look for answers.
So I think that questions involving recent media, be it games, books or movies, are on-topic, as long as they actually refer to mythology — we do not want to encourage in-depth discussions of fantasy-world realities of WoT or GoT here.
Now, the question is if every book, film or game that raises valid mythology questions should be allowed its own tag...
There are a multitude of such new stories and we risk getting a tag-overflow if every mythology-related book, game or movie gets its own tag, so my initial idea would be to think about one or some tags that encompass all of these.
Maybe a single tag modern-fiction could do the trick?
I do suspect that eventually, when a new movie like Troy or a game like Age of Mythology comes out, users will try to create tags for those, and I'm not sure it's always a bad idea to try and avoid them altogether. After all, we want people to find those questions when they want to know if Troy was mythologically accurate. But that would be a question of keeping up-to-date with current affairs, I guess.
To avoid a modern-fiction becoming too broad a catch-all for too many different subjects, we could allow seperate tags for popular fiction that we expect to attract multiple questions. So a movie like Troy, especially when it is new, would deserve its own tag, but an obscure translation of a privately published short story loosely based on a mythological theme does not.
OP of the question in question here.
Are questions about a particular interpretative work worth grouping together?
Yes, I believe so. I added the tag for Age of Mythology (AoM) because I believe that questions about a particular fictional work (in this case a game) that derives from mythology should logically be grouped together. This would apply equally for movies/TV and even books that interpret and pull from the ancient lore of various cultures.
I feel a lot of our questions ARE going to be coming from interpretations written in books & portrayed in movies, and I don't consider AoM any different based on its medium (video game).
Where should we draw the line in regards to tagging? I think it's way too broad to have medium tags like game or modern-fiction and a little bit too meta to have tags like game-reference or interpretative-work.
The thing with tags is to remember that their use is tied to searching and grouping of like questions together. Someone is more likely to browse and favorite questions regarding age-of-mythology than they are game-reference or interpretative-work, or modern-fiction.