It is a non-linear map which have many paths to take and reach the end. The point is, that you play a map one time and you are happy. Then you have a little break in Portal, because there aren't any new released maps for some time. But the answer is here: play the Deja-Vu again, but choose a different path with different puzzles. You can choose freely the way that is going to lead you to the end. Thats it!
The Choice is in your hands...
I choose you, Pikachu!
It's nice that you give players a freedom of choice :3
Awesome job ^_^
This time, Mr. Freeman, I will take away the illusion of free choice, and instead, choose for you...
Excellent.
yay, cake! :D
SKINNYCAP oh my GOD SKINNYCAP IS ACTIVE???!!!
**** yeah! xD
YEAR CANT WAIT TO PLAY IT!!!!
Cool idea, I guess it makes it worth playing at least twice.
looks thrilling with just this picture :)
OH YEAH **** YEAH! XD