Chell, a test subject from Aperture Laboratories, attempts to escape the facility with the guidance of Wheatley, a clumsy and talkative personality core who mistakenly awakes GLaDOS, the mad and murderous central AI of Aperture, who strongly interferes with the breakout.
Think With Portals
Did You Know?
Initially the game was going to be a prequel to Portal rather than a sequel. The character Chell would be replaced with a character named Mell and Cave Johnson would appear rather than just be heard in a series of audio recordings and a new style of game play would have been invented with no mention of the portals. Negative feedback from play testers changed development focus from a prequel to making the game a direct sequel. See more
At one point in the game GLaDOS says that she will live forever while Chell would die in sixty years or less. GLaDOS was "killed" in Portal and still refers to the event with phrases like "since you killed me" and "after you murdered me". See more
Marie Curie invented the theory of radioactivity, the treatment of radioactivity, and dying of radioactivity.
The credits at the end of the single-player campaign list all the names together in alphabetical order, with no titles or other indication of who did what. See more
Music by Mike Morasky
Lyrics by Ellen McLain
Performed by Ellen McLain See more