It was a normal day at Aperture, testing dangerous tracks and having insults flung at you by GLaDOS. I was on the last test of the day, or so I was told. She always lied why should today be any different? The track was moderately easy a few turrets and whatnot. Same old, same old. GLaDOS's voice came over the intercom. "Would the test subject place the portal gun in the deposit bin and walk through the set of doors directly in front of them." I quickly realized after walking through the doors that I had entered was my evil oppressor's chamber.