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Riddle Me ThisCollection by SkateJerrySkate
A short collection of single player maps to keep your mind working.
GLaDOS's Lost TestsCollection by The Unlocked
These are the lost test of GLaDOS. Before GLaDOS completely took over aperture science, the humans hid these tests because of reasons like "Too deadly" and "Not Possible" and other junk like that. Well GLaDOS ignored the humans and for 65 years has been s...
Portal Still AliveCollection by SurelyExploding
A remake of the challenge chambers from Portal: Still Alive on the Xbox Live Arcade
The Mame ChambersCollection by Kurumi
Galgamos Advanced Portal Testing FacilityCollection by -=CotS=- Galgamos
Greetings ladies and gentlemen. I am Galgamos and I'm the owner of this facility. It appears that there is a problem with our main AI. Would you mind to shut it down for us? We don't want to put any more workers into these chambers just to reach the...
That ItchCollection by Iksman
That Darn Itch... My collection of self made, fun to play maps I will also make a collection of the maps I found funny and nice, called "Dat Itch" That Darn Itch... to play Portal 2... it's killing me. I NEED PORTAL 2 NOW!
The Sundance LevelsCollection by wildBcat
Some fun levels that begin really easy and move up in difficulty. Work still in progress
Coop Extension BoxesCollection by Tobeh
Challenging coop puzzles, without too many elements!
The Humans are DeadCollection by Eruiongyll
Fun COOP MapsCollection by Parker
Onimia: CO-OPCollection by Beepity-boop
New maps will be done soon
The Lambda CooperativeCollection by Łαđұ Łαмвðαðєłтα
The Lambda Cooperative is a collection of testing chambers designed for two players by the Lady Lambdadelta herself, creator of such singleplayer chambers as "The Lambda Chambers", "Lambda v2.0" and "Squarefall".
Coop mapsCollection by FedoS
junehanCollection by wnsgks8
Co-Op Challenges (1-5)Collection by Prince Noctis Lucis Caelum
It will take a long time. Have fun on these Co-Op Challenges that I worked very hard on.
Jack be Nimble ChambersCollection by Kaede Ishimora
This is my Jack be Nimble chamber series enjoy!
31 октябряCollection by 31 октября
Карты для совместного прохождения.
Laser LogicCollection by version2_1
Test your understanding of logic with lasers in Portal.
Portal 2 - Co-op collectionCollection by NADudgeon
It's just my collection for co-op chambers, I have yet to see if they are bad or not though.
creation #1Collection by michaelbw99
some creations by me. dont judge them, i am just starting.
My StuffCollection by [ZURIS Development] 刃狼
Basically whatever I build and release for the Portal 2 mapmakers (Singleplayer AND Co-op maps)
firstCollection by pwdyson
Zero CoolCollection by Департамент образования
A Story of the First 365 TestsCollection by ThreeRoneC
From the creator of 999 Chambers, comes an all new story set years before you and your companion cube. You were not the first to try to complete all 999 test chambers. Unlike you, they did not have an awesome companion cube...they had eachother. See ho...
Test DumpCollection by [gbx] mountainRyan
My collection of test maps! ... or a dump of them.
The Melted CollectionCollection by Melting Terminal
In The Melted Collection contains every chamber made my Melting Terminal, that ISN'T part of The Testing Pack.
The Testing PackCollection by Melting Terminal
The Testing Pack consists of chambers made by Melting Terminal - both Singleplayer and Co-Op. In it are chambers all in the same series, which doesn't really matter which order you play them in.
MyCollectionCollection by tuhvatullin92
bla bla bla
COOP Maps & CollectionsCollection by p4ik
Portal 2 Co-opCollection by Set0