Who created the game which uses Palladium's Megaversal system and created in August 1990?
Nightbane:  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. Rifts (role-playing game): Rifts is a multi-genre role-playing game created by Kevin Siembieda in August 1990 and published continuously by Palladium Books since then.
Kevin Siembieda