I have a question about a game for which there is no tag. What do I do?
I think this is good justification for creating a new tag, at least for as long as this community continues to categorize questions by the name of the game. If we move to a system where we tag questions according to some kind of "category" (zombies, war, cooperative, etc.) then things might change.
It's okay if you're the first or second person to ask about a game. Go ahead and create the tag.
I don't have enough reputation to create tags. What do I do?
Unfortunately, the system won't let you tag a question using the untagged tag. Pick a tag that clearly does not fit your question, and use that one instead. Then, put a bold sentence at the top of your post like "This should be tagged spoons, but that tag doesn't exist, and I don't have enough reputation to create it. Please retag."