Hi, I'm the writer of the piece. "Wolfenstein 3D" came out in 1992, before "Doom" in 1993. This article is about "Doom," not "Wolfenstein 3D" because it's the 20 year anniversary of "Doom" coming out. And I don't think "Return to Castle Wolfenstein" was as influential as these other games. I chose games that were influenced by "Doom" and in turn influenced other games, or games that were representative of trends that "Doom" engendered, such as "Turok."
Wolf wasn't multiplayer... maybe that's why they didn't mention it. Also... how is it that "Marathon" did multiplayer better than Doom. As someone who spent countless hours playing Doom multiplayer (played during lunch hour with a bunch of other guys in the office) I never had any problems with it's MP capabilities - and with it's mod-ability Doom and Doom2 were easily the best MP fps's of their era... only being surpassed when Quake and those geniuses at Threewave came on the scene.
MIDI Maze is an early first person shooter maze video game for the Atari ST developed by Xanth Software F/X, published by Hybrid Arts, and released around 1987.
The game constructed multiplayer networks using the MIDI interface. It has been suggested that MIDI Maze introduced the concept of deathmatch combat.
Up to 16 computers could be networked in a "MIDI Ring" by connecting one computer's MIDI-OUT port to the next computer's MIDI-IN port. Unless the computers were looped correctly, more than 4 players tended to slow down the game to a crawl and make it unstable.
This was inspired by Maze War which is considered to be the first ever FPS game though that lacked multiplayer. If I had to guess Wolfenstien and Doom themselves were inspired as a result of Midi Maze and or Maze War.
A full 5 years prior to Wolfenstien and 6 years prior to Doom there was a multiplayer FPS game by the name of MIDI Maze for the Atari ST that supported up to 16 players. A lot of people don't know about the game or not the Atari ST version of it at least.
This article was just celebrating Doom's anniversary from sounds of the writers comments, but I think it gives Doom too much praise and neglects to give credit and praise to the games which really inspired it in the first place also #8 shouldn't even be on the list especially not over Goldeneye which was also for N64 and way more influential.
Of course the whole genre evolved from the early RPG game Wizardry. While I realize that Wizardry wasn't a shooter, it did have you moving through a box like maze. It was the first game that I ever saw where you looked forward from a first person perspective (except for early driving games like Night Rider of course).
"Wolfenstein 3D" wasn't even the first FPS game, even though W3D did inspire "DooM", the first FPS should go to "Corporation" (aka "Cyber-Cop"). Which predates both W3D & "DooM" by 2 and 3 years respectively!