Catacomb 3-D as part of the Catacomb Adventure Series trilogy of sequels. Although Wolfenstein 3D was not designed to be editable or modified, players developed character and level editors to create original alterations to the game's content. John Carmack and Romero, who had played numerous mods of other games, were delighted, and overrode any concerns about copyright issues by the others. The modding efforts of Wolfenstein players led id Software to explicitly design later titles like Doom and Quake to be easily modifiable by players, even including the map editing tools id Software used with the games. The source code for the original Wolfenstein 3D engine was released by id in 1995; when making the 2009 iOS port, Carmack used some of the enhancements to the engine made by fans after its release. The game's technical achievements also led to numerous imitators such as Ken's Labyrinth, Nitemare 3D, The Terminator: Rampage, Terminal Terror and The Fortress of Dr. Radiaki, among others. 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 most recent titles are the 2019 games Wolfenstein: Youngblood and Wolfenstein: Cyberpilot. Notes References Sources External links Wolfenstein 3D engine source code 1992 video games 3D Realms games 3DO Interactive Multiplayer games Acorn Archimedes games Activision games Alternate history video games Amiga 1200 games Amiga games AmigaOS 4 games Apogee games Apple IIGS games Atari games Atari Jaguar games Browser games Cancelled Atari Lynx games Cancelled Sega Genesis games Commercial video games with freely available source code Cultural depictions of Adolf Hitler DOS games First-person shooters Game Boy Advance games Games commercially released with DOSBox Experimental medical treatments in fiction Id Software games Imagineer games Interplay Entertainment games IOS games Classic Mac OS games NEC PC-9801 games Obscenity controversies in video games PlayStation 3 games PlayStation Network games Shareware Single-player video games Sprite-based first-person shooters Super Nintendo Entertainment System games Censored video games Video games about Nazi Germany Video games scored by Bobby Prince Video games with 2.5D graphics Windows Mobile Professional games Windows Mobile Standard games Wolfenstein Wolfenstein 3D engine games World War II first-person