Nightbane is a dark fantasy role-playing game and setting created by C. J. Carella and published in 1995 by Palladium Books. The game uses Palladium's Megaversal system, which is also used by the multi-genre game Rifts and the horror game Beyond the Supernatural, among others.
Originally published under the title Nightspawn, the game's name was changed after legal threats from the lawyers of Todd McFarlane, creator of the Spawn comic book.
The world of Nightbane is a dark fantasy setting very much like our own modern world on the surface, but beneath that, it is more sinister. Disappearances and murders are common place. Reports of monster sightings are more frequent, and people tend to feel hopeless and helpless. The reason for this is that a secret cabal of supernatural beings from another dimension and their shapeshifting minions have quietly seized control of the world's government and corporate powers.
Source: Wikipedia, "Nightbane", available under the CC-BY-SA License.