Wolfenstein was the prototype of Doom. They weren't really different games.
Dude, dude. Stop. Both games pioneered techniques of creating a 3D world at a fast and fluid frame rate within the sever constraints of computer technology at that time. Wolfenstein 3D used ray casting on a flat polygon grid, in which only the surfaces visible to the player were calculated rather than the entire area surrounding the player, with animated 2D sprites for enemies.
The further developed Doom game engine enabled height differences (all rooms in Wolfenstein 3D have the same height), full texture mapping of all surfaces (in Wolfenstein 3D, floors and ceilings are flat colours) and varying light levels and custom palettes (all areas in Wolfenstein 3D are fully lit at the same brightness). The latter contributed to Doom's visual authenticity, atmosphere and gameplay, as the use of darkness to frighten or confuse the player was nearly unheard of in games released prior to Doom; palette modifications were used to enhance effects such as the berserk power-up which tints the player's vision red.
In contrast to the static levels of Wolfenstein 3D, those in Doom are highly dynamic: platforms can lower and rise, floors can rise sequentially to form staircases, and bridges can rise and fall. The immersive environments were enhanced further by the stereo sound system, which made it possible to roughly determine the direction and distance of a sound effect. The player is kept on guard by the grunts and growls of monsters, and receives occasional clues to finding secret areas in the form of sounds of hidden doors opening remotely.
It included other clever visual tricks to make the game run smoothly on a 1993 PC, which in those days had basic VGA graphics cards with not yet a dedicated 3D GPU.
Basically: these games represent computer gaming history just as much as ELITE does, and indeed Elite: Dangerous.
Did you...
I just...
No... words...
/facepalm
I feel ya, bro. I feel ya.
The issue with some comments about games like Doom is that you really had to be there at the time to appreciate how completely world-changing the game was.
Mentioning really early games like Maze War is interesting but there was another FP franchise that pre-dated Wolfenstein and Doom:
Mercenary Series:
https://en.wikipedia.org/wiki/Mercenary_(video_game)
https://upload.wikimedia.org/wikipedia/en/2/28/Mercenary_amstrad_version_cover.jpg
Apart from some wire-frame vector graphics car racing "sims" the Mercenary series was my first introduction to FP "shooters". Those games blew mind because they illustrated the possibility of what gaming could be into the future. Then Doom came along and everything changed....
......... and because I've just done this research I have found the Mercenary series has been ported over as playable freeware:
http://mercenarysite.free.fr/mercframes_graphic.htm
Absolutely. I remember the Mercenary series well: I played the first two on my trusty Commodore 64. Damocles on my Amiga 500.
(thanks for the link, BTW!)