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 "".
Rise of the Triad
"Rise of the Triad" began its life as a follow-up to "Wolfenstein 3D" (though it reportedly shares some similarities with Hall's "Doom Bible", which laid out Hall's conception of the video game "Doom" and even shares the name of one of the protagonists). The working titles of the game were "Wolfenstein II" and "Wolfenstein 3D: Rise of the Triad". It was to use the same game engine code as "Wolfenstein 3D", and have new levels, art, and characters. The artwork took around six months to do. As the game was getting into deeper development, project leader Scott Miller was contacted by John Romero, informing Miller that the project had been cancelled. Miller suspected that this was because id Software did not want to draw the spotlight away from their upcoming game, "Doom". In order to keep as many of the numerous game assets the team had already created from going to waste, Tom Hall came up with a new storyline which still incorporated the Nazi themes seen in the Wolfenstein series.