In Ghost Hunter: Spirits players take on the roles of a party of supernatural explorers from the Infernal Club. They compete against each other to battle and ultimately capture ghosts and other denizens of the paranormal world. Overview Ghost Hunter: Spirits is a card game for 2-6 players that should last for 10 – 30 minutes. It is a standalone game but it is also one of a series of compatible Ghost Hunter decks. You may take cards from any of these decks and shuffle them together to create new and interesting versions of the game.