I feel justified yet disgusted with myself at the same time
I think there'd have to be some direct involvement from the key members of the original crew (Romero, Petersen, etc) to really be an id Doom game. Despite being published by id, Final Doom was just a couple of (high quality) fan-made PWADs until the last minute. Is Master Levels somehow canon to you just because it was published directly under id? You mention you don't view PSX Doom as canon, but if it has anything to do with the Jaguar level set, why isn't it also a canon depiction of the Doom universe, it was actually made by the key id guys.
In Doom's case, I consider being "canon" as an equivalent to being the official idSoftware's release. Therefore - Doom 1, Doom 2, E4 and Final Doom, all events happening in them, and their manuals too.
And besides, 3DO Doom, SNES Doom, PSX Doom, and Doom 64 were all done by outside teams with near no involvement from id, yet they received approval and licensing from them and thus has the id name on it.
I get Doom 3, and kinda Doom 64, but why is PSX Doom a "different world"? It was still closer to Doom 1/2 than it was either 64 or 3, probably because it was those games. About the closest to "different world" you can get with PSX is the differences in the Jaguar levels, as well as some levels (e.g. Tower of Babel) being moved to a different order. Cut/exclusive levels barely count to me, because sure, it leads to a different experience, but it doesn't necessarily conflict. PSX Doomguy could just have as easily have gone through Slough of Despair, and PC Doomguy could just have easily gone through Threshold of Pain, but simply wasn't depicted.
I personally see Doom64, PSX Doom and (well) Doom 3 as "different worlds", which I call non-canon.
As for colored lighting and different sounds, I wouldn't consider that a valid reason to call it a different world, it's merely a cosmetic presentational difference.
PSX Final Doom has TNT before Plutonia. I wonder if they came to the same conclusion because of that or just picked it at random. Maybe more for difficulty purposes since Plutonia is widely considered the harder of the two.
If I had to guess from the stories alone I'd say that TNT comes first, then Plutonia. My reasoning would be that they show a change of focus, from continuing to research dimensional travel (TNT) to researching defensive technologies (Plutonia). It's kind of like they've finally learned the lesson.
Sounds like the perfect excuse to get you to keep buying new level packs. :P
For example it's slightly farfetched to imagine that, after Earth was almost destroyed in the original invasion, the government would continue making the same mistake over and over again.
Last edited by Sodaholic on 06-01-14 at 23:09