Mechanics are quite simple: Complete tasks for a creepy and mysterious man while a monster wanders the dark hallways with nothing but quick burning matches to light your way....but I'll be goddamned if this isn't one of the most effectively disturbing and fucked up games I've played in recent memory. It leaves a lot of room for thought about how much, if any, of the events are actually even happening at all or only exist in the mind of a man broken by his addiction.