It's a seasonal game, and the game is fun because it returns once per year. Although I think the game starts to get boring after 2 games, other people think otherwise. Anyways, that's not my point. Like Creatures said, the game is special because it was made for Halloween. If this game would still be available in Spring it wouldn't be special anymore, and it's likely that nobody would play it, because in my opinion, it lacks variety. So I think even a month is too long, let alone having it all year.