There are a lot of posts about Call Of Duty's series-spanning game mode Zombies, but none of these questions have a tag that reflects the game mode itself.
In first page of the search I saw posts tagged call-of-duty-series, call-of-duty-world-at-war, call-of-duty-advanced-warfare, call-of-duty-infinite-warfare, call-of-duty-ww2, call-of-duty-black-ops, call-of-duty-black-ops-2 for questions that were all related to the Zombies mode.
Each of these games have their own Zombies game mode, but should they also have a specific tag for it? The game mode has taken on a life of its own, having appeared in at least nine games since its inception in Call of Duty: World at War.
Additionally, these tags do not encompass questions that are not game-specific such as how to download custom maps or questions about game strategy or Zombies mode, lore which is distinct from the Call of Duty Series lore.
I do not believe these tags cannot be made game specific because of an iOS game Call of Duty: Black Ops Zombies which would obfuscate questions. How would we tag Call of Duty Black Ops Zombies (2010) with Call of Duty Black Ops Zombies (2011) iOS without changing the naming convention of every other Call of Duty tag?
Right now, I feel such questions do not fit within the call-of-duty-series where they're frequently posted. Adding such a tag would make it easier to search for these kinds of questions. Much in the same way we have tags for grand-theft-auto-v and grand-theft-auto-online where the game is drastically different.
I would like to propose a call-of-duty-zombies tag to encompass this game mode. Any thoughts?