That seems to have gotten much rarer over time, as climbing polygon counts have required ever-heavier optimizations on environments, which make it harder to move at runtime. The environment is surprisingly dynamic: there are switches and devices everywhere. The classic levels are abstract (occasionally too abstract), but still detailed enough to feel like they could represent real places as long as you don’t think about it too hard. I love the aesthetic - pixely in a 3D(ish) environment, and consistent in a way that meshes together really well. Or, well, I love Doom 2, which is the game we actually had when I was nostalgia years old.
