Return to Castle Wolfenstein

Return to Castle Wolfenstein is a first person shooter video game published by Activision and originally released on November 19, 2001 for Windows. The single player game was developed by Gray Matter Interactive and Nerve Software developed its multiplayer mode. Id Software, the creators of Wolfenstein 3D, oversaw the development and were credited as executive producers. The multiplayer side eventually became the most popular part of the game, and was influential in the genre. Splash Damage, an independently-owned game developer in London, created some of the maps for the Game of the Year edition. A sequel, titled Wolfenstein, was released on August 18, 2009.

It includes a story-based single player campaign (taking up certain themes from the original game), as well as a team-based networked multiplayer version which features different character classes that must work together in order to win. There are four classes — lieutenant, medic, engineer, and soldier — the soldier can be one of several subclasses depending upon the special/heavy weapon that he selects. The multiplayer demo includes a beachhead assault map similar to Omaha Beach.
In the campaign, Allied agents from the fictional "Office of Secret Actions" (OSA) are sent to investigate rumors surrounding one of Heinrich Himmler's personal projects, the SS Paranormal Division (also see Ahnenerbe). The agents are, however, captured before completing their mission and are imprisoned in Castle Wolfenstein. Taking the role of Blazkowicz, the player must escape the castle and continue investigating the activities of the SS Paranormal Division, which include research on resurrecting corpses, biotechnology, and secret weapons.

During the game the player battles Waffen SS soldiers, elite Fallschirmjäger (paratroopers) known as Black Guards, undead creatures, and Übersoldaten (supersoldiers) formed from a blend of surgery and chemical engineering conducted by Wilhelm "Deathshead" Strasse. The end boss is an undead Saxon warrior-prince named Heinrich I.