Welcome Back is an alternate ending to Portal 2, based off the thought "what if those four singing turrets did shoot?"
Why is it pixellated?
The developer doesn't want us to see it, lol.
As far as I can see, this is an older Aperture facility test course and the red thing is a button, I just don't know what that big yellow-lightish thing is.
It looks like a main menu screenshot to me with an old Aperture test as the background.
Yes, it does look like an old Aperture test, now that I think about it. :)
I think the walls are what point that out clearly.
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