Portal 2

Portal 2

1056 ratings
Prolonged Exposure
File Size
25.501 MB
Aug 20, 2012 @ 3:23pm
Aug 25, 2012 @ 10:34am
2 Change Notes ( view )

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Prolonged Exposure

In 2 collections by Fourth Reaper
That Laser Collection
3 items
Fear the Reaper - The complete collection
8 items
Testing focus: Lasers and Hazardous Liquids
Difficulty: Easy-medium / medium
Expected play time: Several minutes to, say, twenty?
Version: 1.1

This map features Thermal Discouragement Beams, Toxic Goo and Fizzlers, with some Laser Redirection required. It doesn't focus on laser relays though, it actually revolves more around logic. No quick finger needed, just logic.

The name of the map, Prolonged Exposure, refers to both the use of lasers and the deterioration of these otherwise pristine test chambers. The artstyle of the map is the same as of the Penrose Collection but this time around the walls are going to be opened up a little to reveal the underlying rock.

The map was originally supposed to enter in the Heavy-Duty Super-Mapping Super-Contest on ThinkingWithPortals, but under the circumstances I couln't upload it in time. So here it is now, I hope you'll like it. If you do, I reccomend you subscribe to me for more maps. :D

PS: I hope you'll forgive me for taking a break from the Penrose Collection for this one.

The thread for the map on ThinkinWithPortals can be found here:


Version 1.1
- Added autosaves.
- Fixed some indicator lines and other details.
- Made the dried up goopit less deadly. (Still deadly though.)
- [Possibly] fixed my custom cube skins not showing up properly.
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turDucken Sep 6 @ 8:58pm 
my name turducken
jamie.marchant Feb 11 @ 5:59pm 
Needs more checkpoints. I think I know how to beep it but I keep falling into the water in the secound half! Maybe I will try it again in the future.
quaternary Feb 10 @ 4:00pm 
How'd I miss this one? Great test, great visuals, and great website shoutout ;)
Petutski Feb 4 @ 6:09am 
Excellent map! Loads of tricky logic and a decent length. Feels great! And going back to a previous chamber to retrive a cube.... brilliant!
BrownieComicWriter Dec 26, 2014 @ 3:32pm 
I'm amazed my poor old brain still works after figuring this one out. Nice work.
BrownieComicWriter Dec 26, 2014 @ 3:31pm 
Assuming you know what you're doing. Any test can be completed in one or two minutes once you know the solution. He just means it'll take several minutes to figure it out.
ghostyman719 Nov 15, 2014 @ 11:59am 
I found this one to be quite difficult. Well done.
IlIllIlIIlIllIlI Sep 30, 2014 @ 5:09am 
The description is misleading.
"Several minutes to, say, twenty?" it says, while in can be completed in 1 minuted and 39 seconds.

Ale May 20, 2014 @ 4:31pm 
I added your map to my new Anthology of community-made gems (an ongoing WIP). You can see it here: http://steamcommunity.com/sharedfiles/filedetails/?id=192138122. Thank you for making this map!
Ale May 20, 2014 @ 4:31pm 
Very well designed, polished and clever. Thank you!!