I've read the help center and seen nothing about not asking for rules, and I've done several searches here on Meta for the same information. Since I can't find a definitive answer, I prefer to check before I ask the question.
Recently, I found a board game I'd never heard of in a rummage sale: "Deer Hunters Challenge" from Mills Game CO. I bought it and brought it home, and while it appears to have all the pieces, there are no instructions with the game.
I've used every combination of search terms I can think of, and browsed several "board game rules" sites and this game just does not come up. It seems to be a pretty rare and obscure game.
Would it be on-topic to ask for the rules/instructions to this game on this site?