Ravenloft
Trapped in another world, each area of the world is it's own little plane of existence, ruled by the baron! Vampires, ghouls, zombies, wights, undeads, witches, curses and no way out - DUN DUN DUUUUUN
Ravenloft is a campaign setting made of lofts and ravens...well, ok, it's a D&D campaign setting that threw away the shiny high fantasy heroism cliches and largely substituted them with 19th century gothic novel material. Ravenloft itself is a plane, divided into several domains each ruled by a different lord, inspired by traditional horror tales (