Ahh, carmack, yes, the founder of ID right?
I’ll read up on these guys.
Carmack is still only 37. He started pretty young.
I can’t believe he has released the source code for most of his games too, he sounds like a cool guy.
I know DOOM certainly revolutionalised 3D engines, I rememebr it clearly, it was amazing at the time.
Before that though, there was Wolfenstein and a couple of others I’m sure, that were “proper” 3D to an extent, as opposed to mode 7 style techniques.
Virtua racing and virtua fighter came out before DOOM, that was still in the no texture mapping era, flat shaded polys, I loved them at the time 
I’m sure there must have been a 3D engine before that though, game or otherwise.
