Return To Castle Wolfenstein is both a sequel and a revision to Id Software’s previous Wolfenstein 3D, released in 1992. This version was itself inspired by Muse Software’s Castle Wolfenstein and Beyond Castle Wolfenstein which were available on the popular 8 bit platforms of the early 1980s.
So popular was Wolfenstein 3D that it refused to go away, appearing as a secret level in Id Software’s Doom II: Hell on Earth in 1994.
The game begins with the player guiding William "B.J." Blazkowic out of the interrogation dungeon of Castle Wolfenstein, dispatching several guards on the way and meeting up with a local resistance operative. The following levels – each prologued by some well-written dialogue between the burly head of the OSA (Office of Secret Actions) and his chief of staff in order to outline Blazkowic’s mission – pit the player against demons, undead creatures, genetically and chemically enhanced Nazi Supersoldiers, the Waffen SS and other agents and failed creations of the SS Paranormal Division, a fictional Nazi operation under the stewardship of a real-life Nazi, Heinrich Himmler (who also makes an appearance in the game).