The Maze was based on previous work by id Software and others. IIRC, it was kinda janky when held up against Doom or even Wolfenstien or Heritic/Hexen. Hell, Descent was out by then as well.
Pipes? Pipes was something else. None of those games I mentioned bothered to make something look round in any believable capacity. Pipes did that, seemingly with shading 🫨