Jens Finkhäuser on Nostr: Technically (TM) Doom took a lot of shortcuts, as did Ultima Underworld, so I'm not ...

Technically (TM) Doom took a lot of shortcuts, as did Ultima Underworld, so I'm not sure to which level of nitpicking the argument will hold. But you can always fall back on Quake. It was widely regarded as the first "real" 3D game after Elite/Frontier, give or take.