After playing the game he thought about taking the design of Bezerk and replacing the robots with Nazis. The same day Warner saw The Guns of Navarone, he played the multi-directional shooter arcade game, Berzerk, in which the player navigates through a maze with laser-shooting robots. The game was initially conceptualized by Warner after he saw the 1961 British-American war film The Guns of Navarone, which follows the efforts of an Allied commando unit as they attempt to destroy a seemingly impregnable German fortress. Castle Wolfenstein was published by his then company M.U.S.E. Warner was a pioneer in the early eras of video gaming, especially the stealth genre. It was developed by American programmer Silas Warner, along with Dale Gray and George Varndell. The Wolfenstein series of video games started with the 1981 stealth-adventure video game Castle Wolfenstein. The series presents an action-heavy take on the fight against Nazi Germany. Those developed by MachineGames are set in an alternate history in which Axis powers won World War II.

Earlier titles are centered around Nazis attempting to harness supernatural and occult forces. The majority of the games follow William 'B.J.' Blazkowicz, a Jewish Polish-American Army Captain and his fight against the Axis powers. Wolfenstein games developed by MachineGames include Wolfenstein: The New Order, Wolfenstein: The Old Blood, Wolfenstein II: The New Colossus, Wolfenstein: Youngblood, and Wolfenstein: Cyberpilot. After ZeniMax Media acquired id Software, including the Wolfenstein franchise, Swedish developer MachineGames became the series' primary developer. Further games in the series include Return to Castle Wolfenstein, developed by Gray Matter Interactive, Wolfenstein: Enemy Territory by Splash Damage, and 2009's Wolfenstein by Raven Software.

Beginning with id Software's Wolfenstein 3D, Wolfenstein games became fast-paced first-person shooters, and are widely regarded as having helped to popularize the first-person shooter genre. The first two games in the series, Castle Wolfenstein and Beyond Castle Wolfenstein, were developed by Muse Software and focused on stealth-based gameplay from a top-down perspective. It was originally created by Muse Software, before being revived by id Software. Wolfenstein is a series of World War II video games.

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