Just want to say that this is the first time I am playing the original doom as intended, without mouse-aiming and the brutal doom mod and it is simply a phenomenal game. It holds up incredibly well.
Brutal Doom is a really neat thing but it isn't really Doom.
The purest Doom is 35 ticks per second logic output to CRT at 70hz 320x200 (double scanned to 320x400). And that's still one of the ways I play to this day, 70hz CRT, on both a vintage Pentium 100 with vanilla VGA and also on a much newer i3 + GTX 460.
And the first time I beat Doom, it was Doom 1.0 on my 486SX and it was 1993. My life changed a whole lot for the next two years as I went really, really hardcore into PC gaming to the point of even almost entirely ignoring consoles...until the PS1 launch, where things got a lot more balanced again. But it was that Doom 1.0, played with *keyboard only*, that ramped up my prioritization of PC gaming to the point that I spent the next decade maintaining a bleeding edge PC with the latest graphics and sound cards, and a whole lot of overclocking.
But these days I play with a mouse, even when I play Doom 1.9 on real MS-DOS on my real Pentium 100. Mouse is legit. Mouse has *always* been supported, and iD was using mouse as one input method while developing the game.
Lots of evidence
here including original manual scan.
And now I'm off to hack my Switch. Certain legally owned WAD files of mine will end up on there...