Exclusive: The independent horror publisher and production company DreadXP and its parent company Epic Pictures Group are prepping a live-action feature adaptation of the supernatural first-person horror video game The Mortuary Assistant, which the former company partnered on with independent developer DarkStone Digital.

The Mortuary Assistant brings players into the world of Mortician Rebecca Owens, who thinks her first night on the job will be embalming a surplus of corpses, though she soon learns a sinister presence resides at River Fields Mortuary. As the dead awaken and malevolent spirits bind themselves to her, Rebecca has to learn how to combat demons (including the figurative demons of her past), in order to survive the night. The supernatural horror game, developed by DarkStone’s Brian Clarke, is available for purchase for Windows PC on Steam.

Since its launch in early August, The Mortuary Assistant has taken off as an internet phenomenon — achieving...