Obsidian is a 1996 computer game created by Rocket Science Games for Mac OS and Windows platforms. Based on a game design outline by VP of Development/Creative Director, Bill Davis, and written by Howard Cushnir and Adam Wolff, the genre of the game was a first-person 3-D graphical adventure game, with a large puzzle element. The puzzles were designed by …

You play the game as Scud, a "disposable assassin", who has been hired to take out a target in the "Marvin's Manikan" factory. Based on the underground comic by Rob Schrab, Scuds are designed to self destruct after they have destroyed their target... Scud has become aware of this fact, and instead only injures his target enough to not self-destruct. …

After signing a document held by a man who is mostly nose you will meet your guide Ginger Vitis. Soon appear the nine teachers of Grossology all with blunt paranomasic names. These tutors are masters of the art of “Stealth Learning,” In other words they mask biology in children’s love of the gross.