This list only really needs portal 2, for that is all that is and ever will be. We are all just experiments, played out by a cruel, but removed, entity. For what purpose? very little, and the closest we come to a reason is to "escape". We dont even have a motivation, just the illusion of reward. The only thing worthwhile in our lives is our favourite song...
...and the ability to mess around with the very fundementals of physics.
Just in case anyone wondered, i dont actually think like that. Hell, i dont even think. I am simply a turret...
Are you still there...?
...Shutting down