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NewStoryCollection by GLaDOS
Hello its a NewStory tests
Portal 1 ChambersCollection by kmwsky1
Portal 1 Chambers
DIAMEND CollectionCollection by BlueASIS
CORRIDOORS, and ELEVATOORS, my two maps using world portals to bend reality.
Thinking and movingCollection by suanpan
Welcome to play. May need some unusual move. Difficulty：normal. Thanks for playing.
Inter-dimensional TestingCollection by ℳadeye06 #TeamPyro
This is my new creation: The inter-dimensional tests. They are a series of maps that have linked portal dors as their main element.
Tiny Testing InitiativeCollection by costellonicole
All the tiny chambers in a not so tiny collection! Tiny Science! These chambers are the smallest space you can fit in a level. I AM NOT A DOFUS I KNOW YOU CAN MAKE SMALLER BUT THIS THE SMALLEST YOU CAN MAKE WITH OUT CUTING OFF THE OBSERVATION
Countdown to Extinction (Director's cut)Collection by jk7201
This is a special version of the Countdown to Extinction collection. It contains the original maps plus some extra stuff. The difficulty increases as you proceed, so following the suggested map order is highly recommended.
Introduction to the Workshop: The CollectionCollection by RedSilencer
A collection of easy-to-medium puzzles. This collection serves as an entry point for players new to the workshop. The order is in ascending difficulty, with some odd balls nested with the genuinely classic puzzles.
Best Custom Co-op MapsCollection by Ace Pyder
These are personally my favorite co-op maps, because they demonstrate great graphics, great testing, and intuitive solutions that make you think differently about puzzle solving. This makes them all a "must-test".
Portal 2 Coop ChambersCollection by Clemo7
Selection of 470 Portal 2's chambers to play with friend (± 5.3GB). Based on the most popular levels (most played and liked) and also on the creators and levels most followed. _______ "Thinking with Time Machine" is required to play some levels ("Brai
VenturaCollection by Skyferret
A 6 part series in Industrial/ Underground/ Reconstruct themes. Each map involves repulsion gel. There is also tractor beams, fizzler fields, light bridges and some portal flinging.
Radelites Mod Items PreviewCollection by Turret Cube
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
Tuleby´s mapsCollection by tuleby (CZ)
SalvationCollection by RedSkittleFox [On Holidays]
You can find all Salvations map here. Salvation is map pack where you need to test!
The Office PrankCollection by Camßεn
When you are at work at aperture science, you find out that your co-workers are nowhere to be found. What dark secret may lie at the bottom of this? The story is told through email screens and other interactable objects, so be sure not to miss those.
UNREAL CHAMBERSCollection by Enderlux
These are the unreal chmbers. Prepare for the most unreal chambers you've ever seen :D
THE CORE: RELOADEDCollection by CosmicD
You are a test subject in the Aperture Science lab who winds up in another "puzzling" situation. You are also in a race against an ever wicked "test dungeon master" trying to make life hard and success a relative term. What's up with GLaDOS anyway ? Has
Active Test SubjectCollection by The Cig Smokin' Sniper
You are a Stock-Piled test subject, just now being woken up for testing. ...but it feels like something is changing.
Gelocity Time TrialCollection by Radix
A collection of Portal 2 race maps. The tracks are covered with orange speed gel and your task is to reach the finish line in a limited time.
INTO THE MULTIVERSE (an incomplete adventure)Collection by Blappeture Executive NO.1
The enrichment centre has worked hard to build the first ever Multiverse Device. However, you are but a mere test subject and are not privy to its sensitive machinery. So it was only natural that when you walked past security and pressed a few buttons when
Gelocity 1 vs 1Collection by Radix
A collection of Portal 2 race maps. The tracks are covered with orange speed gel. Use your portal gun cleverly to trick your opponent and be the first to reach the finish line!
Curious ChamberCollection by Nobi-Knobi
Hi everyone! I already uploaded this mappack on MyAperturelabs, but now where Steam has his own Workshop I will bring it to you! My first Portal 2 Map - 3 .bsp files of hard work are waiting to be played by every single of you! In Curious Chamber you
Friendship is magic! (Co-op)Collection by 14KarraT
I hope you will enjoy this collection and you will feel the power of friendship. Deviantart: http://14karrat.deviantart.com/ YouTube: http://www.youtube.com/user/14KarraT Don't forget "Love and tolerate" ! :3
Aperture Employee of the Moment AwardCollection by Aperture Laboratories
The Perpetual Testing Initiative (PeTI) is live! Even though most of you will be getting your first sweet taste of test chamber construction today, a lucky few of you have already been beta testing for the last couple of months. An unfair head start? You b
COSMOGONY - The Complete CollectionCollection by ~Dreey
Cosmogony is a 6 part map pack taking place during GLaDOS activation in the Enrichment Center. You are some of the few survivors of the neurotoxin disaster and with some help, you try to find a way out of Aperture. The map pack features custom content, a s
Moonbase Luna-CCollection by Catsy
Somewhere in the Multiverse, in another Aperture not too different from ours, an intern working on the Conversion Gel project had a stroke of inspiration: if moon rock is such a great portal conductor, why not open a portal on the Moon and get it ourselves
12 Angry TestsCollection by CaretCaret
Part 1: Once Upon a Time… Part 2: Lasers Are a Girl’s Best Friend Part 3: Don’t Eat the Paint Part 4: A Bridge Too Far Part 5: You Put the Fun in Funnel Part 6: A House Divided Part 7: Revenge of the Turret About the map pack: This map pack consi
Designed for Danger CampaignCollection by Puddy
|| ABOUT || Designed for Danger (www.designedfordanger.com) is a Portal 2 Campaign that offers eight new levels and 1 to 2 hours of play time. In the campaign, you assume the role of Chell during an early part of Portal 2. This time however, things
Prison Escape (RE-LOADED)Collection by BuddyRoach
This is the completely re-made versions of the original flawed Prison Escape Collection I made before. This time, I've ironed out the wrinkles and added some detail to the design.