Wraith: The Oblivion
"A modern fantasy-horror RPG about ghosts (""wraiths"") caught between the world of their former lives and the fantasy-like underworld (""Stygia""). Stygia (specifically the underworld of Europe and North America) is a world embroiled in civil war between the Hierarchy¸ Renegades¸ and Heretics. Individual wraiths are held on by ""fetters"" (passions for things left behind in the world of the living)¸ while being tempted by their ""shadows"" (evil halves of their souls). The interesting mechanic is that each player has a PC and plays another PC's shadow.
The 2nd edition and later books downplayed somewhat the introspective and fatalistic aspect¸ in favor of more conventional fight against evil in the underworld. - A description from https://darkshire.net/jhkim/rpg/encyclopedia/ with kind permission of John H. Kim"