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Cave Johnson's Lost ChambersCollection by mikebeza
Travel back in time to "Old Aperture" and explore the Lost Chambers that Cave Johnson could not test because they were too dangerous!
ArrivalCollection by Quansword
The beginings of my Arrival series
Caroline's MindCollection by Unknown Scientist
Aperture Science Innovators. While all the center is testing, there's a woman, thinking of test chambers to create. She writes her ideas on a book and hide it somewhere in the Aperture Center. Her name: Caroline. Many years later, the Aperture Laboratorie
Escapology of DiseasesCollection by RectorRocks
Maps with dangerous diseases in which you must escape in order to avoid contracting it.
Gelocity Grand PrixCollection by AlphaSp
The Gelocity Race maps, all in one collection. I DO NOT OWN ANY OF THESE MAPS. ALL CREDIT GOES TO RAIDIX. [great map creator!]
Aperture Physics LabCollection by Positron
This is a series of unique puzzles I created using actual concepts in physics. They are designed to be fun, and not overly challenging. I have ideas for more chambers to come...
Portal: PreludeCollection by dOrItOnG
여러분의 댓글이 저에게 큰 도움이 됩니다. あなたのコメントが私に大きな助けとなります。 Your comment will be a great help to me.
The Employee: Official CollectionCollection by Dr. Orange
The Employee: Official Collections is exactly what it sounds like. The official collection pack for the Employee series. More maps will be added when they are released. Complete storyline (hover mouse over spoilertext to read) spoilers
Untitled ICollection by Lumizence
First part of Untitled.
ALLOS Aperture - Short MapsCollection by Anachronistic ALLOS
A collection of my shorter maps, just to have them organized into one place.
Motanum's Standardize PuzzlesCollection by Motanum
Motanum's Standarlized Tests! All maps made in hammer and now take advantage of the workshop! Now with Cave Johnson's lines! Starts relatively easy and gets more complicated as it goes on! Don't forget to rate and enjoy! And leave comments
Reflection Gel Testing InitiativeCollection by Chicken Permission
This collection contains all of the items as part of the Reflection Gel Testing Initiative. This collection is still actively being made, so be on the lookout for new items!
The Get Smart SeriesCollection by DeathWish808
The Get Smart Series.
Mari0 mappack (Work in progress)Collection by Great Health Heraldo
This collection contain remakes of the maps from the Mari0 game, produced by Stabyourself.net, from the mappack called "Portal". I'm not the creator of Mari0, just a fan who enjoyed the game and was looking a way to recreate this maps for Portal or Portal
Adventure puzzle collectionCollection by UFS FrostGiant
Here is a collection of all my maps created for single-player.They are all funny with new techniques,mechanics and tricks. Some of maps are around medium difficulty and some may be a bit harder. Enjoy playing ! If you want me to play your maps you can a
Escape from ApertureCollection by Anachronistic ALLOS
[ PLAY THE REMAKE INSTEAD! http://steamcommunity.com/sharedfiles/filedetails/?id=476097276 ] In another multiverse, you are Mark Bendest, a test subject who volunteered at Aperture for an experiment to turn people into three-dimensional manifestations o
Reddit Community MapsCollection by Espen
This is a collection of maps made by the Reddit community. If you want your map(s) added to the collection, just link to the map(s) you want added in the comment section and to your reddit profile. Please do not make requests of maps that are not made
THE Portal ParableCollection by Darkcyber
My first Portal2 Workshop which is parody to [The Stanley Parable] game. Every of your choice make different action which can decide DEAD or ALIVE !!!
New Game Element - Sphere CannonCollection by DrFauli
This is a new game element named 'sphere cannon', which works for SP and COOP maps and can be used in PTI Editor and Hammer Editor.^ Features: - movement synchron to portalgun - sounds and reload animations - left mouse button to fire a (blue) spher
PC Gamer: Best Portal 2 Singleplayer Maps & CampaignsCollection by Aradalf
PC Gamer's top Portal 2 singleplayer maps and campaigns, available here: pcgamer.com/2012/11/03/the-best-portal-2-singleplayer-maps-and-campaigns
Tuleby´s mapsCollection by tuleby (CZ)
All my tests http://www.imgup.cz/images/2017/01/07/tpw.gif
No portals. Just JumpsCollection by James
Various kinds of jumps. Contains 5 maps, 2 easy, 1 medium, 1 hard, and 1 very hard. The maps do not use portals but instead timing and creative use of strafing and jump tactics. Lots of speed gel :) Very hard map just added (simple tasks but very hard to
5 ExtraTestsCollection by Extragamer
4 тест камер сделанных в игровом редкаторе.
Eight Mappack - Sober (Part 2)Collection by Lumizence
Subject ZCollection by doctorhitts
Here's a collection of all the Subject Z maps I have created. There really is no story, or order they should be played in, they're just listed chronologically from when I created them. Some were experimental and I named them as such. I hope you enjoy
Gelocity MapsCollection by profile
Коллекция из испытаний для одиночного и кооперативного режимов. В них вы будете чевствовать себя как на гонке, а кооперативный режим рознообразит игру созтизанием между друзьями. A collection of tests for single and cooperative modes. In them you will
Pure IntellectCollection by That Man John
https://www.dropbox.com/s/5ji7kvprav9mc3p/pilogo.png?raw=1 Welcome to the Pure Intellect Saga. GLaDOS has sent you (as the clever test subject Chell) into the bowels of Aperture as a way to dispose of you. Staggering your way throu
Mine WorldCollection by Forgeman_88
Portal 2: The AftermathCollection by Spamfan
Portal 2: The Aftermath, is a Portal 2 workshop collection which introduces to the player events that might occur after the singleplayer campaign ends. Offering at least one entire hour of mind-boggling gameplay, challenging you to use Portals
Escape from ApertureCollection by Hunter
As GLaDOS regains full control of the facility the only way to escape is to play along. Complete the testing courses and find the way out starting from the Cave Johnson Era of Aperture make it to the current and gain your freedom.