Doom had been a few years before but what Mario 64 really bought to the table was a super intuitive analogue control stick rather than tank controls and tons and tons of polish
Yeah I meant less that 3D games were invented out of nowhere when the PS1 or N64 released. It's more that a large majority of developers, especially ones on console, were thrust from 2D to 3D development.
The original demo they did for folks was apparently crazy clunky too and they adjusted a ton after
Doom isn’t 3d, it’s raycasted 2.5d. It’s a completely separate type of rendering that has nothing in common with real 3d.