I built and placed a few objects randomly in Unity, mainly for the purpose of trying out how to use PBR materials. I tried to tweak the parameters to create a metallic material and added a normal map to give the metal surface a bumpy feel. Then I found a wood floor texture on the internet and tried to apply it to the floor, and adjusted the Map to make the texture not overstretch. I also tried to make a transparent material, but it did not look like a glass material. I think Unity’s PBR material is quite realistic.