There even is quite a spectrum between 2D and real 3D. Duke Nukem 3D made heavy use of 2D sprites (so it was less 3D than Quake, and that was good) yet was much

There even is quite a spectrum between 2D and real 3D. Duke Nukem 3D made heavy use of 2D sprites (so it was less 3D than Quake, and that was good) yet was much more 3D than original Doom.