The "Perpetual Testing Initiative" has been expanded to allow you to design co-op puzzles for you and your friends!
User reviews: Overwhelmingly Positive (52,500 reviews)
Release Date: Apr 18, 2011

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Includes 2 items: Portal, Portal 2

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Includes 24 items: Counter-Strike: Global Offensive, Portal 2, Left 4 Dead 2, Left 4 Dead, Portal, Team Fortress 2, Team Fortress Classic, Counter-Strike: Source, Counter-Strike, Counter-Strike: Condition Zero, Day of Defeat, Day of Defeat: Source, Half-Life 2, Half-Life 2: Deathmatch, Half-Life 2: Lost Coast, Half-Life 2: Episode One, Half-Life 2: Episode Two, Half-Life, Half-Life: Blue Shift, Half-Life: Opposing Force, Half-Life Deathmatch: Source, Half-Life: Source, Ricochet, Deathmatch Classic

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Downloadable Content For This Game


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.

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

Mac OS X
SteamOS + Linux
    • 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
    • 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
    • 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
319 of 335 people (95%) found this review helpful
1 person found this review funny
26.3 hrs on record
Posted: February 22
I have no idea why I waited so long to review this game. Here goes nothing, and I hope you rate this up. If you already know a thing or two or hate reading, visit my Pros and Cons section as it helped many customers decide if this game is right for them.
You know how when you are on vacation and say, "I am so glad it isn't winter right now."? Yeah, that sums up the power this game has on you. When you play the game, it is so...crisp (Vacation-like) and when you have to leave, it is like that miserable winter I was talking about.
This game, as you should know from some other reviews and through the fact that it is one of the best selling games of all time, leaves an effect on the player. It is a beautiful story-line. You play as a female test subject through the campaign. She (I won't spoil her name) is forced through many tests GLaDOS (a powerful robot who took over Aperture) has prepared for her. You learn a lot about this character as you portal around puzzles of rooms, and a lot is learned about yourself. The programed-to-be "idiot" (whom you will find out through the game) is something to look out for as you think he is helping you escape. It is a clever twist. You will learn that the industry you are escaping from used to be a shower curtain/part factory. Yeah, It will all make sense when you play.
Then there is the multi-player mode with Atlas and P-body who are trying to free the humans or whatever. That itself (with a partner) is totaly worth a lot of Friday nights. Now that they are implementing items/loadouts into the game (or hats/taunts/clothes/flags to those who are uncertain of the term), the game will be more interesting. Now, I may not have many hours, but I assure you that I have beaten multi-player in about 4 hours, and the single player in 3. I mean, the rest of my hours come from exploring more/community maps. And that is the amazing thing about this matter how many times you have beaten it, it is still fun. Also playing multi-player with a different friend every time makes you find a lot out about their creativity/teamwork/leadership/meatal abilities.
Other important things
The many achievements with variety are also something to look on about. There are many things you will NEVER notice no matter how many times you play unless you YouTube some of it. The deeper you dig into the storyline, the more interesting you find the game. There were many rumors that we are still uncertain of, which makes this excellent.

To dumb it down:
+Amazing graphics for a non-stop beautiful gameplay.
+Wonderful audio and music for a great experience.
+Well-designed maps and challenges.
+Unlimited maps (user-created).
+Fantastic story-line.
+Many users own this game. (Lol I remember the commercials).
+Holiday sales make buying this game super affordable.
+Gender neutral.
++Helps with cognitive brain activity.
-Limited story-line (I wish there was more to it, but there is always Portal 1).
-Some levels take seconds while others take many minutes. (Not really progressive difficulty wise in my opinion, which isn't a bad thing here to me.)
-Limited campaign exploration. (Some repetitive looking levels here and there.)
-Restricted to the short story line. (However, there are some mods which are amazing, but if you want more, you have to manually download them instead of them being included with the game.)
My opinionated review
I would say the cons are so minor that I shouldn't even have mentioned them because it may not make you buy the game. DO NOT let that happen. Get this game. I recommend buying during a sale to get Portal 1 and 2 for a cheap price together for the full experience (because they raised the price of this game recently). This is a classic game and will go down in history as one of the best - revolutionizing the way we think/game. It was such an amazing thought that I hope you guys consider for yourselves.
Out of 100, there is nothing wrong with this game. You may not like it if you aren't creative, don't have friends to play it with, or can't appreciate an amazing "Portal transportation" concept. But listen, you will fall in love with this game and stack hours to it. There is no community to worry about other than wonderfully made maps from users like you. Definately get this game if you don't have it - that being said, my review shouldn't even matter. I would give this a 97/100 after all of that. I hope you read everything before looking at my rating.
Thanks so much for reading, so I hope you share the love and rate this review up, as it took some thought to make. If you are still wondering whether you should get the game or not...well it always will be a must-have, and YES! Get it!
(I write reviews now)
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307 of 331 people (93%) found this review helpful
8 people found this review funny
14.3 hrs on record
Posted: February 9
Surprisingly, this game can run on my potato.
Was this review helpful? Yes No Funny
101 of 127 people (80%) found this review helpful
2 people found this review funny
4.0 hrs on record
Posted: May 9
My Review :

This was a potato!
I'm making a potato here:
Huge success!

It's hard to overfeed
my satisfaction.

Potato Science:
We do what we must
because we dine
For the food of all of us.
Except the ones who are bread.

But there's no sense crying
over piece of steak.
You just keep on eating
'til you run out of cake.
And the slice gets done.
And you make a wheat pun
for the people who are
still potato.

I'm not even potato...
I'm being so potato right now.
Even though you broke my belly,
and killed me.

And tore me to slices.
And threw every piece into oven.
As they burned it hurt because
I was so happy for you!

Now, these chips of potatoes
make a tasty line.
And we're out of beta.
We're baking on time!
So I'm GLaD I got burned!
Think of all the things we learned!
for the people who are
still potatoes.

That was a joke. Ha Ha. Fat Gaben!

3/3 The cake is a lie

Thank you for the suggestions, upvotes and comments, you monsters. I'm GLaD you guys liked it!
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39 of 41 people (95%) found this review helpful
4 people found this review funny
8.6 hrs on record
Posted: April 3
GLaDOS: Well, this is the part where he kills us"
Wheatley "Hello! This is the part where I kill you"



[Achievement unlocked: The part where he kills you]

Soundtrack: The part where he kills you
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34 of 37 people (92%) found this review helpful
1 person found this review funny
14.7 hrs on record
Posted: June 19
Portal 2 is the follow on to the extremely successful first person original. The game retains all of the game play elements from Portal 1 and adds lots of new features such as bridges made from light beams, and splashing paint gel which accelerate your speed or make you jump higher.

In the single player campaign, you play as Chell. As with the original Portal, your character can take a small amount of damage before they die, thankfully like the original you don't take fall damage still. The aim of the story mode is to explorer the Aperture Science Lab, which is filled of complex puzzles that have a clear exit point, but there are also other parts of the game which are not so clear leaving the objects less clear.

The tutorial at the start of the game explains all of the game play elements very well and gets you well prepared for the on coming puzzles; and whenever there is a new element introduced, the game does a very good job of making you aware what it does without shoving a tutorial screen in your face every time.

Portal 2 is powered by the Source engine, like all of Valve's more recent releases (Half Life 2, Left 4 Dead, TF2), and it looks stunning. You will find it hard nowadays to find a game that looks as well polished as Portal 2, all of the colours, textures and visual effects are done perfectly.

Story-wise is the feature in Portal 1 that I thought it fell down on, however in Portal 2 they knocked it out of the park. It follows on from the story line set in the original and goes beyond the level of detail and complexity that you would expect. I needed to find out how it ended once I started playing, and the ending is just beautifully crafted.

The difficulty is like most puzzle games, if you are good at them, it will just come naturally. It definitely has a better difficulty curve when compared to the original, but even still at times I had to revert to a walkthrough to pass through some puzzles (shame on me eh?) but there is nothing here that can't be solved if you sit and think for a couple of minutes each time.

The single player story mode took me about seven hours to complete, this to me is a perfect length for a game of this type, the game ends at a high point and I was 100% satisfied with the outcome. There is also a co-op campaign included which will also add a good number of hours. On top of both of these, we also have Steam Workshop support, meaning endless hours of mods and different chambers to try and master. I have yet to try any out yet but some of the maps and rooms I have seen on the workshop page just look amazing. I wouldn't be surprised to see people being able to get fifty plus hours in this game.

In conclusion, Portal 2 is a must play for any gamer out there. It is an absolute classic that should certainly be in your library. It goes on Sale every few months so most people will already have it, but you need to play it.

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