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: The Old Blood
The existence of "Wolfenstein: The Old Blood" was first acknowledged by Bethesda Softworks on 4 March 2015, through the release of an announcement trailer. Footage of the game was showcased at PAX East on 6–7 March 2015. Though initially announced to only be available digitally, it was later confirmed that the game would also receive a physical retail release in Europe, Australia and New Zealand.