Arqade is a question and answer site for passionate videogamers on all platforms. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

So I'm stuck in GLaDOS 17. I have put the cube on the button, connected the laser to its output, explored the back area of the room hoping for exits — but I could not find a way to reach the exit of the chamber.

enter image description here

How do I get out of here?

share|improve this question
up vote 12 down vote accepted

You need to drop the cube while standing on the platform. The platform will be down while the cube is blocking the beam.

  1. block beam with the cube (on top of hard light)
  2. step on the platform
  3. make cube drop by redirecting the hard light
  4. beam will activate the platform, which will get you to the exit, cube will open exit
share|improve this answer
Man, I did it way more complexly than that. I fetched the water bottle from the back area, and used it to block the beam, then placed the cube, then went back and double-widthed the hard light, moving the bottle onto the outside, then went to the platform and moved the portal. Same basic effect, but stupider. :-) – Tim Sullivan Apr 20 '11 at 3:24

With pictures (for fun)

  1. enter image description here
  2. enter image description here
  3. enter image description here
  4. enter image description here
  5. enter image description here
share|improve this answer
s/for fun/for science – Shaun Apr 20 '11 at 2:27
@Shaun comment +1 for sed! – Joe the Person Oct 15 '11 at 16:35
But science == fun! – Flater Jan 13 '12 at 13:50

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.