Cloned Cube is a Portal mod. It takes place after GLaDOS' fall in Portal. You assume the role of Chell's secret clone. You have to escape or else you may just be tested to death. There is one obstacle. CUBiS is trying to kill you.
Hmm, what could this be?
Storage kind of.
Not an office, because it's missing windows and the whole place is kind of closed in.
I don't know about the room, but there's definitely a face staring at me on the wall to the left.
Wow, I didn't notice that before. I guess the two holes in the wall are the eyes, the clock could be the nose, and there's a little smiley face-sort of thing forming below.