The cooperative game Ghost Stories often has players on the edge of their seats with uncertainty over whether their monks will be able to protect a village against the many aspects of Wu-Feng that threaten it. With Ghost Stories: Black Secret, the players will face an even more powerful dilemma: Wu-Feng himself.

Yes, the player count for Black Secret is 2-5 (instead of 1-4) as one player will take on the role of Wu-Feng and harass the monks in a more direct manner than they've experienced previously. Wu-Feng now chooses where the incoming ghosts will be placed on the individual monk boards. Instead of placing the ghost on the board, Wu-Feng can use that ghost to power coloured spells matching the colour of the ghost (while casting the spells bring Wu-Feng access to stronger spells) or to bring new demon miniatures in play that scour the catacombs underneath the village; these figures are searching for the remains of Wu-Feng by digging in the dirt located there, and should they find the three icons required, the shadow of Wu-Feng descends on the village to fight directly with the monks.

To aid the monks in their fight against this more devious incarnation of Wu-Feng, they have access to blood mantras, special abilities that come in different levels to adjust for the difficulty of play. When a monk loses a life, the Qi token is placed on the mantra. When two tokens are on one of the level-2-mantras, one monk of the players' choice gains a Qi. When 4 Qi are collected on one of the level-4-mantras, all village tiles are dehaunted.