Return to Castle Wolfenstein (abbreviated RTCW) is a modern first-person shooter, which continued the Wolfenstein franchise that had begun with Wolfenstein 3D and Spear of Destiny. Upon release in 2001, it was the first new Wolfenstein 3D-related item since the Spear Mission Packs in 1994.
The game was very popular upon release. Numerous sounds were converted to Wolfenstein 3D mods, mainly those by Wolf Skevos-Jones. A prime example is Operation: Heimzahlung. Some music was also recast in Wolfenstein 3D mods.
Numerous sprites and actors were also created using RTCW imagery.