Fully agree. Even Portal 1 did it for me starting right with the first chambers. Those pipes and cables emerging through the orange glow behind or underneath so

Fully agree. Even Portal 1 did it for me starting right with the first chambers. Those pipes and cables emerging through the orange glow behind or underneath some platforms. What is that glow? Why orange? Where is that coming from? Where does it lead to? What's going on behind these white, sterile walls? The Portal games have this mysterious, unnerving feeling of being trapped and it makes you want to explore and peek behind the curtains. And the Devs let / make you do that. They knew what they were doing. I'm starting to think that the environment / facility is the real antagonist. GLaDOS merely enhances it.