I am gonna drive myself nuts because I can not remember the name of a board game from my childhood. It would have been between 1993–1999.
The box was shaped like a creepy castle or house and there was a laughing skull piece (like it's eyes glowed and it had this evil laugh). All your player pieces were tiny brightly colored skulls and the family of the house was all these monsters (granny mummy, Lord Skull?, a little girl vampire, I think a cousin or uncle was a werewolf) I think there was a rubber spider too. You had to go through the house (which may have been the box) and there was a goop soup monster. It Actually came with a book explaining how the soup monster was made.
It had the same humor of The Addams Family or The Munsters but was like a niche or indy game.