The "Perpetual Testing Initiative" has been expanded to allow you to design co-op puzzles for you and your friends!
User reviews: Overwhelmingly Positive (34,055 reviews)
Release Date: Apr 18, 2011

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Recommended By Curators

"A challenging, hilarious, and mind-expanding puzzle experience for one or two—treasure your first time through."
Read the full review here.

Recent updates View all (26)

June 17

Portal 2 Update Released

We have updated the public release of Portal 2. This update contains all the changes from the recent beta. We would like to thank the community for the testing and suggestions that have been provided.

Changes:

  • Linux / SteamOS beta is now available
  • Steam controller support beta
  • Some translation updates
  • Fixed bugs with triple-monitor displays
  • Some other bug fixes

216 comments Read more

Steam Big Picture

Perpetual Testing Initiative




The "Perpetual Testing Initiative" has just been expanded to allow users to design co-op puzzles in Portal 2! This update also introduces a “Quick Play” feature, giving you quick access to the top-rated maps in various categories.

About This Game

Portal 2 draws from the award-winning formula of innovative gameplay, story, and music that earned the original Portal over 70 industry accolades and created a cult following.

The single-player portion of Portal 2 introduces a cast of dynamic new characters, a host of fresh puzzle elements, and a much larger set of devious test chambers. Players will explore never-before-seen areas of the Aperture Science Labs and be reunited with GLaDOS, the occasionally murderous computer companion who guided them through the original game.

The game’s two-player cooperative mode features its own entirely separate campaign with a unique story, test chambers, and two new player characters. This new mode forces players to reconsider everything they thought they knew about portals. Success will require them to not just act cooperatively, but to think cooperatively.

Product Features
  • Extensive single player: Featuring next generation gameplay and a wildly-engrossing story.
  • Complete two-person co-op: Multiplayer game featuring its own dedicated story, characters, and gameplay.
  • Advanced physics: Allows for the creation of a whole new range of interesting challenges, producing a much larger but not harder game.
  • Original music.
  • Massive sequel: The original Portal was named 2007's Game of the Year by over 30 publications worldwide.
  • Editing Tools: Portal 2 editing tools will be included.

System Requirements

PC
Mac
Linux
    Minimum:
    • OS: Windows 7 / Vista / XP
    • Processor: 3.0 GHz P4, Dual Core 2.0 (or higher) or AMD64X2 (or higher)
    • Memory: 2 GB RAM
    • Graphics: Video card must be 128 MB or more and with support for Pixel Shader 2.0b (ATI Radeon X800 or higher / NVIDIA GeForce 7600 or higher / Intel HD Graphics 2000 or higher).
    • DirectX: Version 9.0c
    • Hard Drive: 8 GB available space
    • Sound Card: DirectX 9.0c compatible
    Minimum:
    • OS: MAC OS X 10.6.7 or higher
    • Processor: Intel Core Duo Processor (2GHz or better)
    • Memory: 2 GB RAM
    • Graphics: ATI Radeon 2400 or higher / NVIDIA 8600M or higher / Intel HD Graphics 3000
    • Hard Drive: 8 GB available space
    Minimum:
    • OS: Ubuntu 12.04
    • Processor: Dual core from Intel or AMD at 2.8 GHz
    • Memory: 2 GB RAM
    • Graphics: nVidia GeForce 8600/9600GT, ATI/AMD Radeon HD2600/3600 (Graphic Drivers: nVidia 310, AMD 12.11), OpenGL 2.1
    • Hard Drive: 8 GB available space
    • Sound Card: OpenAL Compatible Sound Card
Helpful customer reviews
26 of 28 people (93%) found this review helpful
23.1 hrs on record
Posted: October 26
If you don't think this is the best game ever made, then you are nothing but a battery operated potato. By the way, no cake for those who rate this review down. Thank you for cooperating with Aperture Science in our time of testing. We hope to work with you again, that is if you feel fantastic and you're still alive.
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21 of 24 people (88%) found this review helpful
9.4 hrs on record
Posted: October 17
This game has enough talent and genious put in it, that you can put together a dozen AAA title just from scraps. You have to finish both games... just to hear the credit song <3

I'm a potato! :D
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13 of 16 people (81%) found this review helpful
38.7 hrs on record
Posted: October 1
Me and LeBroughan were both called 'extra ♥♥♥♥♥♥♥' by our masta'... We got hit a lot as well... I don't like our masta'
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13 of 17 people (76%) found this review helpful
17.6 hrs on record
Posted: October 19
It's a good game. Has important lessons about lemons. 10/10
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9 of 10 people (90%) found this review helpful
17.6 hrs on record
Posted: October 2
What's not to love about this game? Such a cool storyline, amazing level design, and memorable characters. Not forgetting to mention the crisp soundtrack of the game.

Valve, you've outdone yourself with this masterpiece.

I know you probably see this kind of review all the time, but I sincerely thank you for creating such a great game.
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8 of 9 people (89%) found this review helpful
7.4 hrs on record
Posted: October 12
its a good game, just like portal 1 but a litte bit better..
and (!) its co-op feature makes it the best non-2d-coop-puzzle-game^^
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8 of 9 people (89%) found this review helpful
18.9 hrs on record
Posted: October 16
Loved Portal, loved Portal 2. Now back to loving great company to play it with.
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9 of 11 people (82%) found this review helpful
14.6 hrs on record
Posted: October 1
♥♥♥♥♥♥♥ intense game dis
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7 of 8 people (88%) found this review helpful
10.8 hrs on record
Posted: October 24
A woman with millions of fan theories about without ever speaking a word.
Intentionally designed to be stupid British cores.
Cruel women cores that are really good at singing.
Turrets with low self esteem.
A man that hates lemonade and sounds like J. Jonah Jameson from spiderman.
A potato that becomes your friend.

Combined together with the one of the most original gameplay ever.

10/10
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8 of 10 people (80%) found this review helpful
55.2 hrs on record
Posted: October 19
Didn't give me any damn lemons

10/10
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5 of 5 people (100%) found this review helpful
61.9 hrs on record
Posted: October 14
Portal 2 is an amazing game, and it's obvious the team at Valve have worked hard to deliver a whole new experience better than the first game! The voice actors are great, giving personality to the characters of Portal and Portal 2, and the storyline really catches my attention, making me want to keep on playing and find out more! Portal 2 introduces many new gameplay elements, such as puzzle building and gels, and the co-op mode delivers endless hours of fun! I would recommend Portal 2 to anyone just wanting a great game they can experience countless times without getting bored!
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6 of 7 people (86%) found this review helpful
23.2 hrs on record
Posted: October 11
Portal 2 is the amazingly imersive and fun sequel to the amazingly imersive and fun videogame known as portal. It isn't however one of those sequels where they give you the same product with prettier graphics and do nothing to improve on it; the game contains many great new innovations. At its core, portal is a puzzle platformer game, and this aspect is combined with the story in a way that forces you to think of outside-the-box solutions. The characters are all compelling; even the silent protagonist gets some characterization during the game. She's smart, good at jumping, and is able to jump over both emotional and physical obstacles with ease. When things get tough, and she has a murderous AI tryng to kill her at every turn, she just keeps testing.
The game has essentially three modes. There's the story, co-op, and community made maps. The community for this game is amazing. They take all the resources Valve has lent them, and they make games barely recognizable as part of portal. It could also go in the opposite direction, and you get a game that feels like it should be a part of the main story. One major downside is that you cann't play co-op, or in community maps, if you lack an internet connection. There are many great maps that make you think and analyze the tools you're given in different ways; It's a shame that you can't just download and play one of them while on the go.
If you're not into puzzle platforming, in-depth and imersive storytelling doesn't impress you, and you don't like any of your friends enough to play this with them without committing murder, this isn't the game for you.
10/10
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6 of 7 people (86%) found this review helpful
1.2 hrs on record
Posted: October 18
valve always makes a game as a masterpiece. no other comments needed.
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6 of 7 people (86%) found this review helpful
11.9 hrs on record
Posted: October 1
portal 2 is a 1 in a life time game. it has everything; comedy, action, sci fi, a story plot, puzzle and an awesome song in credits.
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5 of 6 people (83%) found this review helpful
5.8 hrs on record
Posted: October 12
A great sequel to the already popular older game "Portal".
A creepy setting with more of a backstory than the first, you meet a "friend" named Wheaty as you both try to escape.
After activating (because "turned on" is sexual and strange to say when starting a computer) GladOS or that ♥♥♥♥♥ from the first game, you are literaly flung into testing chambers again as Wheaty tries to break you out. Only to later find out that he is crazy and ends up nearly killing you and GladOS. Through playing this game you learn the secrets behind the company and its founder as you travel into the older parts of the labs.

I feel that this Portal has more of a story, while the first game focused more on helplessness and not being in control while being watched. I also feel more connected to this game, getting into this universe and being surprised with the shocking turn of events that take place. Sure, I'm not good with puzzel games, so I had to cheat a little and no clip to get to other parts of the game. (I am special. OK?) I am happy with the end results and the ending (no, I am not telling).

Stuff:
Sounds: 9/10 - Wheaty and GladOS are amazing in this game, and the sounds help too, the voice acting is great!
Soundtrack: 10/10 - Here is a fact, and just youtube it if you don't belive me, aparently the soundtrack is so large and it changes with the gameplay, it will take years for one song to repeat itself.
Graphics: 8/10- Ok, Ok, its getting up there with age, but it is still good. I now feel like I am in some Sci-Fi Lab where crazy ♥♥♥♥ happens.
ConTROLLS: 8/10 - Same from last game, left mouse for one portal, right mouse for the other.
Story: 10/10 - Some secrets are spilled.

Overall: 98/100

This was a great game, but a game where I will only play once, because it is so linear. There is no choice. Sure, I may go back a try some puzzels without cheating.

Maybe a Portal 3? Please? :)
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6 of 8 people (75%) found this review helpful
2.7 hrs on record
Posted: October 21
Best ex girlfriend sim ever! 9/10
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6 of 9 people (67%) found this review helpful
13.8 hrs on record
Posted: October 24
This game has everything to make a good game. Funny characters with great dialoge and a great storyline. I laughed the whole way through. Plus with the great music, cake and lemons. It slips away from the science fiction theme and is aimed more toward using your head. It has found its place at Valve and also a place in my heart.
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6 of 9 people (67%) found this review helpful
12.5 hrs on record
Posted: October 9
Much polished, Such fun
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3 of 4 people (75%) found this review helpful
18.6 hrs on record
Posted: October 6
If id only have one word to describe Portal 2, it would be perfection.
I guess you can already tell i love this game. And oh, I do. I do.
Because whit its simply amazing narrative, amazing script, creative puzzles, and some of the best characters in video game history, Portal 2 is a game that will stick whit you long after youve turned off your computer.
Its charmy. Oh, its charmy. Its straight off lovely.
If your looking for something more then just a game, Portal 2 is for you.
Because Portal 2 isnt a game, its a experience.
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3 of 4 people (75%) found this review helpful
33.1 hrs on record
Posted: October 21
Checking my friends' whishlists. I rfuse to buy them any games.
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