Speculating about the literary taste of the common robot. Read the short story written while working on those renders here: https://medium.com/@TheRuleOfMike/on-the-birth-of-the-imperfect-robot-a72ac616a07.
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Scene rendered using Eevee in Blender 2.8-beta (which quickly becomes an incredibly powerful tool for all 3D artists, game asset creators in particular). In theory, with some optimization, this scene would translate fine to Unity, Unreal, CryEngine or any other engine close to the Disney's principled shader.