The board game ouja is in fact not "fun for the whole family living and dead" and is considered a mild annoyance to the local spirits at best.
Not allowed to consult dead family members' counsel using it anymore.
Dead family members cannot cast votes in favour of your proposals, either.
... when did we, the military, put decisions up to
voting, anyway!?
Dead family members
cannot outrank live, present officers, regardless of what rank they might have had while living.
Nor can they promote you.
Nor can they "possess" you to wield their heirloom sabre and challenge your CO to a duel in a ghastly voice.
Not thumb war, either.
I shall tell my dead family members to cease interfering with my military assignment in any way lest they become
conscripted just to be told to stand guard over a pebble on a deserted island for a century.
Not allowed to swear revenge in the name of any family member thus "backstabbed".
That doesn't make your family "the rulers of the seven seas", either.