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Mini SeriesCollection by [pootis]Spencer
Simple Mini Series of Test Chambers created by me!
TuveeAnialexes Bee Mod passageCollection by Gamel0rd1
Welcome to my collection about all the chambers i have made including. - - - - - old testing relived 1 - - - - - old testing relived 2 - - - - - 3d maze - - - - - 4Dee maze - - - - - trigate chambers 1 - 2 - 3 - 4 - 5 - 6 and 7 ...
Manouvre PackCollection by cheltenham98
Several levels where being quick on your feet is more important that puzel solving.
KennKong's Favorite Puzzle MapsCollection by KennKong
These are the maps I've found that made me think the most. Some of them may be very hard to figure, but none require ninja skills. Don't to forget to rate these and visit the workshops of the original authors.
THE COMPENDIUM COMPLEXCollection by Zhurb-O
A series of chambers less complex than the original collection.
Perpetual Testing #1Collection by scipioafricanus
A few rooms selected for use with the Perpetual Testing Initiative.
Portal 2 Demo ConceptsCollection by DynamicPixel
Portal 2 Demo Concepts,Made With PTI
FlyBoy's Testing chambers of awesomenessCollection by FlyBoy
Aero's Puzzle MapsCollection by ÆRO 64
A bulk collection of all my puzzle maps so they can be downloaded all at once.
Semi-Unlogical Science with RandomCollection by Transistor
My personal collection, enjoy. Can you understand the (Semi) Unlogicalness!
Mr. Bones' wild ridesCollection by Archivemind
Rides that never end
Storms IncCollection by ChillStorms
Thanks to Aperture Science. Storms inc will be releaseing a series of test chambers, Starting with Sector A and Ending with Sector Z. Each Map has a Companion Cube hidden within can you find every one?
GlafendischCollection by Gruntherspoth
Glafendisch is my Collection, I just Hope U ll appreciate.
2 RoomsCollection by Jonny3333
2 Rooms , easy
Flaken Labs CollectionCollection by Flakenstine
Thank you for choosing Flaken Labs. This test chamber is a Modifed version of Test Chamber 01 and 02 . Just like the old Chamber your objective is to Get through the chamber to the door. We have added in some new Features, like the Super Coliding Sphere B...
Maps AndewCollection by Холестерин
it is a madhouse and this is nonsense
To My MotherCollection by GLaDOS
Dear Mum, I know sometimes I can be a right pain, but I still love you. I've been working on this collection for weeks, and since we share Steam between us this should be great for a late present. Hopefully, this should make up for the lateness. Love ...
Australiumfish's Warm Up TestsCollection by Australiumfish
A collection of my Warm Up maps, for people who have been away from testing for a while, and want something easy to start off with. The collection features low difficulty versions of each type of test. Light bridges, excursion funnels, gels, you name i...