Wolfenstein
The "Wolfenstein" series of video games started with the 1981 stealth-adventure video game "Castle Wolfenstein". It was developed by American programmer Silas Warner, a pioneer in the early eras of video gaming, especially the stealth genre. It was published by his (then) company M.U.S.E. Inc. (Muse Software). The player controls an unnamed American prisoner of war as he steals war files containing information about secret German war plans while avoiding or sometimes killing guards, and tries to escape the fortified Nazi stronghold Castle Wolfenstein, set during World War II. The game is often credited as one of the first video games of the stealth genre, since it focuses more on avoiding or disarming enemies, and killing them is considered a last resort.
Wolfenstein
Two operatives of an allied espionage agency, William "B.J." Blazkowicz and Agent One are captured by the Nazis and imprisoned in Castle Wolfenstein during their attempt to investigate rumours surrounding one of Heinrich Himmler's personal projects, the SS Paranormal Division. Agent One is killed during the interrogation, while Blazkowicz escapes custody, fighting his way out of the castle. As the challenge is still afoot, Blazkowicz discovers that the Nazis are constructing a plan called 'Operation Resurrection', which oversees resurrecting the dead as well as dealing with supernatural elements, using them for their own advantage to win World War II against the Allied power.