Wolfenstein 3D
Although id Software did not develop another "Wolfenstein" game, as their development focus shifted to "Doom" shortly after release, and has never returned to the series, multiple "Wolfenstein" titles have been produced by other companies, sometimes using game engines developed by id. The first of these newer "Wolfenstein" games was "Return to Castle Wolfenstein" in 2001, a reboot of the series, and the latest is the 2017 "".
Wolfenstein 3D
"Wolfenstein 3D" was the second major release by id Software, after the "Commander Keen" series of episodes. In mid-1991, programmer John Carmack experimented with making a fast 3D game engine by restricting the gameplay and viewpoint to a single plane, producing "Hovertank 3D" and "Catacomb 3-D" as prototypes. After a design session prompted the company to shift from the family-friendly "Keen" to a more violent theme, programmer John Romero suggested remaking the 1981 stealth shooter "Castle Wolfenstein" as a fast-paced action game. He and designer Tom Hall designed the game, built on Carmack's engine, to be fast and violent, unlike other computer games on the market at the time. "Wolfenstein 3D" features artwork by Adrian Carmack and sound effects and music by Bobby Prince. The game was released through Apogee in two sets of three episodes under the shareware model, in which the first episode is released for free to drive interest in paying for the rest. An additional episode, "Spear of Destiny", was released as a stand-alone retail title through FormGen.