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Weekly ChallengesCollection by Firedog_Alpha
The Educational Testing Initiative CollectionCollection by Bye
This is a collection of the Educational Testing Initiative (or ETI for short) tests. The ETI is an experiment to show people how the PeTI items work or just to give people ideas for their own PeTI tests. This collection includes several tests about the tes
Six Portals. P.S. NOT SIX FLAGS.Collection by That One Guy
ITS SIX PORTALS Grab Your Whole Family And Have Some Fun. At Six Flags We Have 3 things 1.Fun Rides 2. Rides that have a 90 percent chance of death 3. And Finally boots that you can fall from any height and not break your legs. ( THIS IS NOT SIX FLAGS I KN
The Best Portal 2 MapsCollection by LegenDove
Use this handy collection to find top-quality Portal 2 Maps! This collection is updated frequently and will feature quality maps contructed by fellow Steam members! Run by NHPSjordan *If you would like to join me in spotting the best Portal 2 maps, just
Single EscapeCollection by Elovan
(Requires BEEmod to play) A series of five maps dedicated to puzzles using a single portal gun and telling the story of a test subject trying to escape from the facility. If anyone would be interested in taking these maps and fleshing them out in Ham
MisdirectionCollection by Toby Schwartz
This is a ongoing collection of puzzles designed to make you think about what is necessary and what is extraneous in each level. Some are complex and some devilishly simple. The release of the first two levels occured on June 16, 2013. More levels will
Welcome Back - bonus mapsCollection by H4mmerPerson
Bonus maps for Welcome Back: http://www.moddb.com/mods/welcome-back. Thanks to ScottOfNorth for the original concepts for these maps.
PanelsCollection by Massada
All panel chambers.
GLaDOS's Discarded ChambersCollection by P-Deak
GLaDOS once created these thest chambers for special test subjects, but, after a certain series of episodes, those tests were lost and almost totally destroyed with time. After all Enrichment Center has been cleaned up and renewed, the Discarded Test Cham
jjCollection by Mini Games
Primary Colour [Original]Collection by Spark
Primary Colour Hello everyone! Today Aperture presents new test chambers by me what titled as Primary Colour! This is just original version. Soon I'll start making new edition of this version. But what this chambers have new than others? - P
testing track 9251Collection by ThatguyJosh
hello and wellcome to testing track 9251 all the chambers here were made by jmfpayette we hope you have a plesint time testing for us thank you coments and feedback is very apreciated thank you i hope you enjoy
Friendship Mechanical CollectionCollection by RICK 100
The collection of series maps from Portal 2 with much work team. La coleccion de series de mapas para Portal 2 con mucho trabajo en equipo.
Parkour/speed tests collectionCollection by cancurchan
These are my first test chambers
Twirl & DerpsterCollection by Davey boii
MapsCollection by Marillo
portal2mapsCollection by Kinky Banana
Go & ReturnCollection by PRYSIU <3 мαdzια
Mr.Dyl's map cellection #1Collection by Kiilgore
just a bundle of my maps
Portal RedoneCollection by [OG] Dr Cupkizzle
A series of maps from the original Portal game, re-created for Portal 2 and made more challenging. Sorry it won't link the youtube video so I will: http://youtu.be/tjxmrJxKNMU Just so you know, this is a Showcase/Walkthrough Video so it will spoil th
ErprobungCollection by Asconius
My roomsCollection by gRaven
My Portal 2 maps
the CCOA (the co-oparation courses of awsomenes)Collection by ThatguyJosh
hello and again welcome to the apature siance co-opertive testing inishitive. today you will be testing whith a partner. as a requierd test protocoll i was not allowd to create the following tests because we are testing the unstable INTERDIMENTINAL PORTALS
Course for Sleepy Test SubjectsCollection by nightvoid41
Collection of my random chambers. Red eyes and sleepy mood is required.
Old Style, New StyleCollection by Innervator
I created a perfectly round sphere map template by hand. Then I filled the bottom with water and created some old-style puzzles!
ALLOS Map PackCollection by Catch-Here Comes a Thought
This is the map pack (made by ALLOS' Friend) recomended for V3Ryan.
The Se7en Deadly ChambersCollection by Ascension
Envy Greed Gluttony Lust Pride Sloth and Wrath. Good luck.
Fissure Research FacilityCollection by ~ Jules
All the FRF maps, good luck!
Gelocity mapsCollection by Epic Jew Lord (Sheckle master)
this is the collection of Gelocity race maps.
Thinking with cubesCollection by 8MMW
This collection features maps utilising specific tricks with thermal dicsouragement beam redirection cubes.