The "Perpetual Testing Initiative" has been expanded to allow you to design co-op puzzles for you and your friends!
User reviews: Overwhelmingly Positive (48,102 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

Windows
Mac OS X
SteamOS + 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
1,065 of 1,135 people (94%) found this review helpful
2 people found this review funny
3,333.3 hrs on record
Posted: December 26, 2014
Don't have much experience in this game, but what little time I did spend playing was great fun. One of my top 5 games of all time easily 11/10
Was this review helpful? Yes No Funny
117 of 121 people (97%) found this review helpful
3 people found this review funny
12.7 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.
-------------------------------
Intro
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.
-------------------------------
Summary:
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.
-------------------------------
Multi-Player
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 game...no 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:
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Pros
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.
Holiday sales make buying this game super affordable.
Helps with cognitive brain activity.
-------------------------------
Cons
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.
Limited exploration.
Restricted to the story line.
-------------------------------
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. 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.
-------------------------------
Rating
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.
-------------------------------
Finally
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!
~thedubmark
(I write reviews now)
Was this review helpful? Yes No Funny
110 of 127 people (87%) found this review helpful
1 person found this review funny
25.2 hrs on record
Posted: December 30, 2014
DO NOT PRESS THE BUTTON!
PRESS IT!
DO NOT PRESS IT!
PRESS IT!
DO NOT PRESS IT!

10/10 would press the button again
PS: Don't make lemonade
Was this review helpful? Yes No Funny
61 of 68 people (90%) found this review helpful
1 person found this review funny
37.6 hrs on record
Posted: January 2
One of the best fps/coop games I've ever played.
Hours of fun playing & with friends, the coop just gets better, with lots of challenging puzzles.
A saga with an excelent wit & great background story.

I would totally recommend it.

10/10
Was this review helpful? Yes No Funny
46 of 51 people (90%) found this review helpful
14 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
1,829 of 2,919 people (63%) found this review helpful
3 people found this review funny
11.6 hrs on record
Posted: December 28, 2014
this game is literally THE HIGHEST RATED GAME ON STEAM. Why the hell are you looking at negative reviews? Scroll up and click add to cart. Right now. DO IT!
Was this review helpful? Yes No Funny
29 of 31 people (94%) found this review helpful
11 people found this review funny
40.8 hrs on record
Posted: January 14
When life gives you lemons, don't make a lemonade ...


Sell 'em and buy this game.
Was this review helpful? Yes No Funny
39 of 49 people (80%) found this review helpful
8 people found this review funny
33.7 hrs on record
Posted: December 9, 2014
Piece of Cake :D
Was this review helpful? Yes No Funny
44 of 58 people (76%) found this review helpful
4 people found this review funny
13.0 hrs on record
Posted: January 4
SPAAAAAAAAACE!
Was this review helpful? Yes No Funny
22 of 25 people (88%) found this review helpful
1 person found this review funny
3.9 hrs on record
Posted: May 9
This was a potato!
I'm making a potato here:
Huge success!

It's hard to overstate
my satisfaction.

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

But there's no sense crying
over every potatoes.
You just keep on trying
'til you run out of cake.
And the science gets done.
And you make a neat gun
for the people who are
still potato.

I'm not even potato...
I'm being so potato right now.
Even though you broke my heart,
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 points of potatoes
make a tasty line.
And we're out of beta.
We're releasing 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

Was this review helpful? Yes No Funny
24 of 29 people (83%) found this review helpful
1 person found this review funny
9.1 hrs on record
Posted: January 27
Short story, really well done and worth replaying over and over.
Was this review helpful? Yes No Funny
18 of 19 people (95%) found this review helpful
1 person found this review funny
22.0 hrs on record
Posted: December 6, 2014
Simply put, it's the best puzzle game ever made.
Was this review helpful? Yes No Funny
22 of 28 people (79%) found this review helpful
1 person found this review funny
4.5 hrs on record
Posted: January 29
With the help of Portals I can now ♥♥♥♥ myself in the ♥♥♥. Thanks Valve!
Was this review helpful? Yes No Funny
15 of 16 people (94%) found this review helpful
1 person found this review funny
13.1 hrs on record
Posted: December 17, 2014
Well, well, well... we are in the presence of a game that exploded with the boundaries of FPS capability.
Portal 2 is one, if not the best, bulletless FPS of all time.
Mindblowing and addictive puzzles will keep you until the very end.

10/10 - "Great work! Because this message is prerecorded, any observations related to your performance are speculation on our part. Please disregard any undeserved compliments."

Aperture Science's sasha is out, peace.
Was this review helpful? Yes No Funny
15 of 16 people (94%) found this review helpful
1 person found this review funny
32.6 hrs on record
Posted: January 12
If you haven't tried it yet, your life is sad. And boring. And without a meaning. Maybe you want to try to make it better? SO TRY THIS DAMN MASTERPIECE!
Was this review helpful? Yes No Funny
14 of 15 people (93%) found this review helpful
10.4 hrs on record
Posted: January 11
Puzzle games don't get better than this.
Was this review helpful? Yes No Funny
18 of 23 people (78%) found this review helpful
1 person found this review funny
45.0 hrs on record
Posted: February 28
It's a good game....here's why

It's like Team Fortress 2 because of Hats
It's like Half Life 2 because of its Graphics
It's like Counter-Strike but with Puzzles
It's like Left 4 Dead but with robots

nuff said. 10/10
Was this review helpful? Yes No Funny
14 of 16 people (88%) found this review helpful
1 person found this review funny
23.7 hrs on record
Posted: December 24, 2014
Best puzzle platformer ever made.
Was this review helpful? Yes No Funny
12 of 14 people (86%) found this review helpful
62.6 hrs on record
Posted: December 21, 2014
A must play for anyone.
Was this review helpful? Yes No Funny
10 of 11 people (91%) found this review helpful
182.7 hrs on record
Posted: January 7
Simultaneously the most amazing and frustrating game I have ever had the pleasure of earning achievements for! I have to say that I wish I could be a part of Aperture Science's test subject group for real - It would absolutely epic to be able to go anywhere in an instant!!!
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